Manuale d’uso / di manutenzione del prodotto WLA (1943) del fabbricante Harley-Davidson
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TECHNICAL MANUAL No, 9-879 WAR DEPARTMENI Washington, 18 October 1943 MOTORCYCLE, SOLO (Norley-Davidson Model WLAj.
*TM 9-&79 RESTRICTED TECHNICAL MANUAL ) WAR DEPARTMENT No. 9-879 J Washington, 18 October 1943 MOTORCYCLE, SOLO (Harley-Davidson Model WLA) DUs«m!nation of restricted matter.
TM 9-879 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) CONTENTS— Cont'd P=,cgrc.ph. p.^» Section XIV Transmission SS-SS 96-104 XV Chains and sprockets 59-66 lOS-114 XVI Fud system .
TM 9-379 1-2 PART ONE-CPERATING INSTRUCTIONS Section I INTRODUCTION Paragraph Scope 1 Supersession of quartermaster manuals 2 ' 1. SCOPE. a. This technical manual* is published for the information and guidance of the using arm personnel charged with the operation, maintenance, and minor repair of this materiel.
TM 9-879 2 MOTORCYCLE, SOLO {HARLEY-DAVIDSON MODEL WLA) FUEL SHUT- OFF VALVE FRONT BRAKE HAND LEVER HEADLIGHT DIMMING ^ SWITCH SPARK CONTROL GRIP HORN BUTT' GEARSHIFT LEVER GASOLINE TANK CLUTCH .
INTRODUCTION TM 9-879 2.
TM 9-879 2 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLAl.
TM 9-879 3-4 Section II DESCRIPTION AND TABULATED DATA Paragraph Description 3 Data 4 3. DESCRIPTION (figs. I, 2. and 3). a. This 2-cylinder solo inotorcycle is powered by a V-type, air- cooled gasoline engine, operating on conventional 4-stroke, 4-cycle principles.
TM 9-879 4 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) Cruising range (without refill) 100 miles Fording depth (carburetor) 18 in. c. Capacities, Fuel capacity (left tank) 33/g U.
TM 9-879 5 Section III CONTROLS AND OPERATION Paragraph Controls 5 Engine prestarting instructions 6 Starting the engine 7 Stopping the engine -^ 8 Operation of vehicle 9 Driving precautions 10 Stoppi.
TM 9-879 5 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA] FUEL SUPPLY VALVE RAPD 310202 Figure 5—Fuel Suppiy Valve figure 6— Fuel Supply Vaive Poslflons when turned to left, with valve head down. Lifting valve head re- leases emergency supply of fuel (3 quarts).
TM 9-879 5 CONTROLS AND OPERATION CLUTCH PEDAL ENGAGED POSITION CLUTCHPEDAL - OlSeNGAGEO PCS1^0^ *'* '^^ ^""" Figure 7— C/ufeh Pec/o/ Postiions 1— LOW GEAR N— NEUTRAL 2.
TM 9-879 5 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) f. Service Brake (Rear Wheel). Foot pedal is located on right side of motorcycle at forward end of footboard. g. Auxiliary Brake (Front Wheel). Auxiliary brake is operated by hand lever located on left handle bar.
TM 9-879 5-6 CONTROLS AND OPERATION Second position to right is for ignition and blackout lights. To use vehicle service lights, depress button to turn switch to third right position,. 1, Instrument Panel Signal Lights. Instead of an ammeter and oil pressure gage, signal lights indicate generator charging, and engine oil pressure.
TM 9-879 7 MOTORCYCLE, SOLO [HARLEY-DAVIDSON MODEL WLA) 7. STARTING THE ENGINE. a. Procedure for starting cold. warm, or hot motorcycle engines differs. Therefore, following instructions are used with paragraph 6 to cover correct procedure in all three cases.
TM 9-879 7 CONTROLS AND OPERATION d. Starling Hot Engine. If engine has been shut off for only a brief period and is near normal operating temperature, it is not neces- ;sry to use carburetor choke lever.
TM 9-879 8-10 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) 8. STOPPING THE ENGINE. a. Stop engine only by turning ignition and light switch to off (straight-ahead) position, to prevent discharge of battery through spark coil primary circuit. 9. OPERATION OF VEHICLE.
TM 9-879 10- 11 CONTROLS AND OPERATION gear, and engine should never be permitted to labor unduly, when a shift of gears, higher to lower, would improve operation. (1) Operator must not look down at gear shifter when shifting gears, but keep his eyes on the road ahead.
TM 9-879 n-T2 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (1) Close throttle. (2) Disengage clutch. (3) Apply brake (or brakes) to slow vehicle without sliding rear tire. (4) Just before coming to a complete stop, shift into "N" (neu- tral) position and engage clutch.
TM 9-879 13 CONTROLS AND OPERATION }3. RUNNING-IN -NEW ENGfNE (OR VEHC.LE). a. A new motorcycle engine or newly overhauled engine must be given proper "break-in" consideration for at least the first 1.
TM 9-879 14 MOTORCYCLE, SOLO [HARLEY- DAVIDSON MODEL WLA) Section IV FIRST ECHELON PREVENTIVE MAINTENANCE SERVICES Paragraph Purpose 14 Before-operation service 15 During-operation service 16 At-halt service 17 After-operation and weekly service IS J4.
TM 9-879 14-15 FIRST ECHELON PREVENTIVE MAINTENANCE SERVICES not broken or cracked, not bare or frayed, not dented or collapsed, not torn or cut. (2) The inspection of a unit to see that it is "correctly assembled" is usually an external visual inspection to see whether it is in its normal assembled position in the vehicle.
TM 9-879 15 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (4) Item 6. Leaks, General. Examine vehicle and ground under vehicle for indications of fuel or oil leaks. Normally a few drops of waste oil from chains may be expected to drop from skid plate.
TM 9-879 15-16 FIRST ECHELON PREVENTIVE MAINTENANCE SERVICES (14) Item 8, Choke, During idling of engine, reset choke as required to prevent excessive choking and dilution of engine oil.
TM 9-879 16-17 MOTORCYCLE, SOLO {HARLEY- DAVIDSON MODEL WLA) jumps out of mesh in any gear, this indicates need of shifter conCroi adjustment. (4) Item 31, Engine and Controls. Be alert for deficiency in engine performance such as lack of usual power, misfiring, unusual noise, stalling, indication of engine overheating, or unusual exhaust smoke.
TM 9-879 17-18 RRST ECHELON PREVENTIVE MAINTENANCE SERVICES '5) Item 40, Vents. Make sure that crankcase breather outlet :r.- rear chain oil feed pipe are clear. Make sure grease drains in zrov.t and rear brake side covers are open and clean. (-i) Item 42, Springs and Suspensions.
TM 9-879 18 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) the day in the Before -operation, During-operation., and At-halt Serv- ices. The After-operation Service consists of inspecting and servicing the following items.
TM 9-879 18 FIRST ECHELON PREVENTIVE MAINTENANCE SERVICES on terminals and properly oiled; tighten terminal bolts cautiously, :: loose. Clean and paint battery carrier if corroded. <8) Item 63, *Accessories and Chain. (a) Inspect carburetor, air cleaner, generator, and cut-out relay :or loose connections, mountings, or damage.
TM 9-879 18 MOTORCYCLE, SOLO [HARLEY- DAVIDSON MODEL WLA) (b) Weekly. Tighten wheel axle nuts and rear brake sleeve nut. Also tighten rear wheel mounting socket screws very securely, (14) Item 70, Steering. Inspect steering head for proper adjust- ment of bearings.
TM 9-379 18 - FIRST ECHELON PREVENTIVE MAINTENANCE SERVICES rvrrranf that hi ^h- pressure streams or steam should not be directed against wheel hubs, brakes, carburetor, air cleaner, or electrical units. (22) Item 64, "Electrical Wiring. 'a) Inspect all ignition wiring to see that it is securely connected, ;>an.
TM 9-879 19-20 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) Section V LUBRICATION Paragraph Introduction 19 Lubrication guide 20 19. INTRODUCTION. a. Lubrication is an essential part of preventive maintenance, de- termining to a great extent serviceability of parts and assemblies.
LUBRICATION TM 9-879 20 LUBRICANT • )NT£RVAL INTERVAL • LUSWCAKT :--i.X.S CAMSHAFT (NOTE 1) ;;j>.K£ COVER BEARING [NOTE II -Z^< ROCKER PLATE -KZHT BRAKE SHaCKLS -CSK SPRINS RODS :.^<E HANDLEVER (NOTE 2] -cNERATOR [NOTE 3) ^AflK CONTROL GRIP (NOTE 41 iODLEARM i.
TM 9-879 20 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) bearing outer grease retainer is loose (par. 92). Generator drive end bearing requires no attention, since it is lubricated by oil circulating through engine. (4) Spark and Throttle Control Grips.
TM 9-879 20 LUBRICATION and blown out through outside breather. However, a moderately driven engine, making only short runs now and then, and seldom thoroughly warmed up. is likely to accumulate an increasing amount of water in oil tank. This water will, in freezing weather, become slush or ice and.
TM 9-879 20 MOTORCYCLE^ SOLO (HARLEY- DAVIDSON MODEL WLA) or steam should not be directed against ends of ivh&el hubs, brake side cover bearings, air c/eaner, handle bar g'rips, or electrical sysrem. To do so will seriously affect correct lubrication and functioning of these parts.
TM 9-879 Section V( TOOLS AND EQUIPMENT STOWAGE ON THE VEHICLE Poragroph Vehicle tools 21 Vehicle equipment 22 Vehicle spare parts 23 RA PD 310208 Figure M— Vehicie Tools 21. VEHICLE TOOLS (ftg. II). a. Kits. Included in the tool kit assembly are the following: L«oand Lsfiar for N</mb»r Fig.
TM 9-879 21-23 MOTORCYCLE, SOLO {HARLEY- DAVIDSON MODEL WLA) L*ganil L«tt«r for Numb#r Mfr't Fig. 1 1 Tool CarTi*d Number.
TM 9-879 23 TOOLS AND EQUIPMENT STOWAGE ON THE VEHICLE REAR VIEW MfSSOR SADDLEBAG WINDSHIELD AMMU NITON BOX CARRIER FRONT SAFErr GUARD RA PD 310216 Figure ?2— Ve/i/c/e Equipment, Left Side REAR SAFE.
TM 9-879 23 MOTORCYCLE, 50L0 (HARLEY- DAVIDSON MODEL WLAJ B CD RA PD 3102OT Figure M— Vehic/e Spare Parts 23. VEHICLE SPARE PARTS (fig. 14). f a. Spare Parts. Jlem A Roll, parts kit H Plug, spark (and gasket) F Link, rear chain repair G Link, front chain repair .
TM 9-879 24-25 PART TWO-VEHICLE MAINTENANCE INSTRUCTIONS Section V!l MAINTENANCE ALLOCATION Paf agraph Scope 24 Allocation of maintenance 25 24. SCOPK.
TM 9-879 25 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) Replace; To remove an unserviceable part, as- Par. 24 a (5) sembly, or subassembly from a vehicle AR 850-15 and replace i: with a serviceable one. Repair: To restore to a serviceable condition.
TM 9-879 25 MAINTENANCE ALLOCATION ECHELONS ELECTRICAL GROUP 2nd 3rd aih :ih Ssttery— service (recharge) and/or replace X iisttery— repair X Battery— rebuild E X Cables, battery— replace and/or repair X Zz-.
TM 9-879 25 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) ECHELONS ENGINE (V-45"-TwiN Engike) (Cont'd) 2nd 3rd 4ih Sfn Engine assembly— repair X Engine assembly— rebuild E X Gasket, cyli.
TM 9-879 25 MAINTENANCE ALLOCATION ECHELONS MISCELLANEOUS (Cont'd) 2nd 3rd 4ih srh C-uards, mud— repair X ?:ate, skid— replace X riste, slcid— repair X Saddle— replace X Saddle— repair .
TM 9-879 25 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA} ECHELONS TIRES 2nd 3rd 4lh 5lh Casings and tubes— replace X Casings— repair E X Tubes, inner— repair X TRANSMISSION Spring, kick starter— replace X Sprocket, transmission countershaft— replace .
TM 9-879 26 Section VIII SECOND ECHELON PREVENTIVE MAINTENANCE Paragraph ; r:ond echelon preventive maintenance services 26 -.. SECOND ECHELON PREVENTfVE MAINTENAiXCE SERVICES.
TM 9-879 26 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) whether the item is in good condition, correctly assembled, secure, or excessively worn. The mechanics must be thoroughly trained in the following explanations of these terms: /.
TM 9-879 26 SECOND ECHELON PREVENTIVE MAINTENANCE Tighten. All tightening operations should be performed with icient wrench-torque (force on the wrench handle) to tighten the it according to good mechanical practice. Use torque-indicating rench where specified.
TM 9-879 26 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) 1000 excess smoke in exhaust. CAUTION: // red light fails to Mile MaintAnance Mile ^o out after engine has been started, stop engine at once. Refer to paragraph 30 for possible causes. Instruments.
TM 9-879 26 SECOND ECHELON PREVENTIVE MAINTENANCE looo CAUTION: Loose primary (front) drive chain, with slack ,'^''* in excess of V-, inch total up-and-down motion, can cause excessive noise which sounds like engine knock. Remove inspection cover for examination of chain.
TM 9-S79 26 MOTORCYCLE, SOLO {HARLEY-DAVIDSON MODEL WLA) looo transmission to level of transmission filler plug opening „ ."'** with specified grade of engine oil. CAUTION: Always drain transmission immediately after ;r has been warmed and agitated by operation of engine.
TM 9-879 26 SECOND ECHELON PREVENTrVE MAINTENANCE 1000 side of the timer is ctean. Inspect breaker points to see that MiU they are clean, well-lined, engaging squarely, and are not Maini«nanc* excessively pitted, burned, or worn. See that condenser mounting screw is tight.
TM 9-879 26 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) woo Ing new gaskets, bolts should then be tightened evenly with u ,' .3. torque wrench to a tension of 60 foot-pounds minimum, or 65 foot-pounds maximum, when engine is cold. 31 Cylinder Hol<l-<lown Nuts.
TM 9-879 26 SECOND ECHELON PREVENTIVE MAINTENANCE 300 ^3p is open. Reinstall caps, observing that each locks prop- Hii& erly on filler neck. Do not interchange fuel and oil tank -.0 Fuel Tank Valves anti Lines. See that valves and lines are in good condition, secure, and not leaking.
TM 9-S79 26 MOTORCYCLE, SOLO (HARLEY-DAVBDSON rftOML WL&) 1000 t^e total up-and-down free movement. Inspect chain for M.ie adequate lubrication. Loosen front and ' rear chain oiler Mamtenonce a^^jQgfirig screws Cwo tutns each. Do not remove screws.
^ TM 9-879 26 SECOND ECHELON PREVENTIVE MAINTENANCE looo condition. Note whether there is up-and-down play caused Mile by loose bearings. Move handle bars through complete Mami*non«e ^^^g^ g^d obscrvc if there is any binding which might indicate improperly adjusted or defective bearings.
TM 9-879 26 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) 1000 brake is adjusted so that end of hand lever has y& free Mil* Mainlsnoncfl '^''* travel before meeting resistance.
TM 9-879 26 SECOND ECHELON PREVENTIVE MAINTENANCE 1000 cuts, bruises, breaks, and blisters; remove imbedded glass, „ , 'f ''* nails, or other foreign matter from tire treads ; observe Maintenance ° _ treads for excessive or irregular tire wear.
TM 9-879 26 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) 1000 Horn leather, ripped seams,- sagging or broken spring in seat u "''' post, and excessive wear in front hing^ CAUTION: M^e sure ihat spring wire dip properly locks the saddle rear hinge clevis pin.
TM 9-879 26 SECOND ECHELON PREVENTIVE MAfNTENANCE 1000 ating lever stud, and rear brake operating lever stud, to .. . '* prevent grease reaching brake linings. Rider should be advised whenever wheel bearings are serviced or adjusted. so that during the next road operation he may determine whether bearings or brake drums are running hot.
TM 9-879 27 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) Section IX ORGANIZATION TOOLS AND EQUIPMENT Paragmph Tools and equipment , >....,.. 27 27. TOOLS AND EQUIP>IENT. a. Refer to SNL-N 19 for common hand tools available to second echelon. b. Refer to list given below for all special tools available to second echelon.
TM 9-879 28-29 Section X TROUBLE SHOOTING Paragraph Introduction 28 Engine 29 Engine lubricating system 30 Fuel system 31 Ignition system 32 Generating system 33 Electrical system 34 Transmission and clutch 35 Wheels and chains 36 Brakes 37 Steering 38 28.
TM 9-179 29 MOTORCYCLE, SOLO (HAKLEY- DAVIDSON MODEL WLA) (e) Engine locked (seized). Refer to organization mechanic. (2) Engine Turns Over When Cranked but Does Not Start. (a) Fuel supply valve closed. Open valve. (b) Empty fuel tank. Fill tank. (c) Fuel system faulty.
TM 9-879 29 TROUBLE SHOOTING i (c) Defective ignition system. Refer to paragraph 32. (d) Defective fuel system. Refer to paragraph 31, (e) Weak and/or broken valve springs. Refer to higher authority, (7) Spark Knock. (a) Defective ignition system. Refer to paragraph 32.
TM 9-879 29-30 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) Fast idling of engine with the front drive chain too loose, may give the false impression that the engine bearings and pistons need replace- ment service. Engine sprocket loose on its shaft will cause a pounding noise similar to that of badly worn engine bearings.
TM 9-879 30-31 TROUBLE SHOOTING c- Red Signal Light Continues to Burn After Engine Is Oper- ated Above Idling Speeds (1) Check oil supply in tank. If light fails to go out after engine is warm, or aft.
TM 9-879 31-32 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) but the obviously required adjustments, check the ignition system thoroughly. Gasoline tank supply valve is a dual purpose valve, and its operation is explained in paragraph 5 b. h. Shut off gasoline supply valve.
TM 9-879 32 TROUBLE SHOOTING r. Remove circuit breaker cover, operate engine with starter Dedal, and observe opening and closing of circuit breaker points- Correct point gap when breaker lever fiber is on highest point of cam is 0.022 inch. For adjustment refer to paragraph 84.
TM 9-879 33-34 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) 33. GENERATING SYSTEM. a. Panei Green Signal Light Continues lo Burn Above 20 Miles per Hour. Correct faulty wiring and connections between battery and generator. Refer to figure 55. Inspect condition of relay and.
TM 9-879 35-36 TROUBLE SHOOTING 35. TRANSMISSION AND CLUTCH. a. Need for attention to clutch and controls is indicated by clutch slipping under load or dragging (transmission gears will shift hard and clash) when in disengaged position. In either case, the first thing to be checked is adjustment of controls: this being the attention usually needed.
TM 9-879 36-37 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA] Adjust chain oiler (par. 61). If the chain Is damaged from lack of oil, replace (par. 62). <L Koufrh or Jrrk>' Wliicie Operation at Low Speed. Chains are too loose. Adjust (pars. 59 and 60).
TM 9-879 37-38 TROUBLE SHOOTING shoes, shoe spring, camshaft bearing and side cover bearing. Replace any defective parts or assemblies (par. 97). 38. STEERING. a. Molorcycle Pulls l<( One Side. Inspect and correct alinement of rear wheel (par. 60).
TM 9-879 39-40 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) Section XI ENGINE Paragraph Description and data 39 Tune-up 40 Replacement of head gasket 41 Carbon removal 42 Valve tappet adjustment 43 Replacement of oil feed pump 44 39. DESCRIPTION AND DATA.
TM 9-879 40-41 ENGINE (3) Spark plug service (par. 83). (4)- Timing ignition (par. 86). (5) Draining carburetor bowl (par. 73). (6) Cleaning fuel strainer (par- 72). (7) Cleaning muffler outlet requires freeing outlet of carbon deposits, caked dirt, oil, etc.
TM 9-879 41-43 MOTORCYCU, SOLO (HARLEY-DAVIDSON MODEL WLA) (5) Remove cylinder head bolts, using head bolt wrench 41-W- 1525. NOTE: On some 42 WLA models, plain washers (O.OPS-inch thick), in addition to regular (heavy) cylinder bead bolt washers, were used to prevent cylinder head bolts from bottoming.
TM 9-879 43 ENGINE 7_TAPPET ADJUST- ING SCREW 2— ADJUSTING SCREW LOCK NUT 3— TAPPET BODY. 4— VALVE STEM. RAPD 310271 figure 1 6~yalve Tappet Adjustmenf adjusted) in the other cylinder is at highest position (valve fully open). Inlet valves are located nearest the carburetor manifold.
TM 9-879 43 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA] EXTENDED NUTS ^O WASHERS RA PD 315712 figure 1 7— OH Pump Removed 76.
TM 9-879 44 ENGINE 44. REPLACEMENT OF OIL FEED PUMP (ng. 17). a. Removal. (1) Disconnect oil tank feed pipe at oil tank. Install nipple cap on tank nipple to prevent oil from running out, or drain tank. Dis- connect oil feed pipe from oil pump nipple.
TM 9-879 45-46 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) Section XM ENGINE-REMOVAL AND INSTALLATION Remove engine 45 Install engine 46 45. REMOVE ENGINE (figs. 18. 19, and 203- a. A study of figures 18 and 19 will provide a good picture of the steps necessary for engine removal.
TM 9-879 45 ENGINE-REMOVAL AND INSTALLATION H J K RA PD 31S713 A— LEFT FOOTBOARD, CLUTCH PEDAL AND SIDEBAR ASSEMBLY AND MOUNTING NUTS AND WASHERS 8 — SPARK CONTROL WIRE AND HOUSING C— ENGINE SPR.
TM 9-879 45 MOTORCYCLE, SOLO fHARLEY- DAVIDSON MODEL WLA) C E F C H J RA PD 315714 I- TSRQPON M L K A — MUFFLER ASSEMBLY AND MOUNTING BOLTS AND NUTS 8 — SKID PLATE C — STOP LIGHT SWITCH D — RE.
TM 9-8/9 45 ENGINE-REMOVAL AND INSTALLATION (13) Close fuel tank valve. Remove gasoline pipe from tank nipple and fuel filter nipple. (14) Disconnect throttle control wire at carburetor lever. (15) Disconnect air intake hose connection fitting from carburetor (four screws) and leave attached to hose.
TM 9-879 45-46 MOTORCYCLE, SOLO {HARLEY-DAVIDSON MODEL WLA} (20) To disconnect rhe circuit breaker to coil wire and shielding ground from coil rear terminals, disconnect oil pressure signal light wire from oil pressure switch terminal.
TM 9-879 46 ENGINE-REMOVAL AND INSTALLATION (10) Connect throttle control wire to carburetor lever. Make sure that throttle closes fully when right grip is turned outward; and that throttle opens fully when grip is turned inward. (11) Install fuel pipe.
TM 9-879 46 MOTORCYCLE, SOLO [HARLEY-DAVIDSON MODEL WLA) support rod nut- Attach right end of front safet>' guard to sidebar with footboard front support stud. Replace iock washer, and tighten nut. Also tighten footboard rear support stud nut.
TM 9-879 47-48 Section Xlll CLUTCH Parograph Description 47 Maintenance and adjustment 48 Removal of disks 49 Inspection of disks and springs 50 Installation of disks 51 Replacement of clutch release bearing 52 47.
TM 9-879 48 MOTORCYCLE, SOLO (HARUy-DAVlDSON MODEL V/IAJ a a. < a 3 « mi: 8 14 5 « 86.
TM 9-879 48 CLUTCH Figure 22— C/u*e/i Controf Linkage RA PD 310219 1/16-INCH CLEARANCE BETWEEN NUT, STUD, AND LEVER Figure 23—Clufch Lever and Stud Nut Clearance 87.
9-879 48 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA] RAPO 3 J 0221 Figure 24— Confro/ Cable Length Adjusfment clockwise) to lengthen cable. Tighten lock nut. install cable end on foot pedal stud: install washer and cotter pin, and install other end oi' cable in clutch release lever notch.
TM 9-879 48 CLUTCH control cable engages lever notch (fig. 25). This free play ensures a fully engaged clutch without pressure on clutch release bearing. Ad- justment is made by means of push rod adjusting screw located in clutch outer disk. Remove two screws which secure inspection hole cover to chain guard (fi.
TM 9-879 48-49 MOTORCYCLE, SOLO [HARLEY- DAVIDSON MODEL WLA) of the three adjusting nuts by cranking engine. Usually a clutch that holds without any noticeable slippage when cranking engine, also holds on the road. (4) After clutch spring tension adjustment is made, bend up nut lock lips to secure adjusting nuts.
TM 9-879 49-50 ADJUSTING SCRPA' LOCK NUT CLUTCH LARGE WASHER OUTER DISK ASSEMBLY ,*5 NUT LOCKS Figure 2S— Remov/ng Spring and Outer Disk Assembly ADJuIVVn^NUTS RA PD 315716 without disturbing sprocket, which is integitel vith clutch shell.
TM 9-879 50 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA; RELEASING DISK AND SPRING ASSEMBLY SPRUNG DISK LONG STUDS NUT LOCKS ADJUSTING NUTS ^^ ^^ 315717 Figure 29— Outer Assembly Removed, Exposing .
TM 9-879 50-51 CLUTCH b. Loose Liner Rivets. If disk liner rivets are loose, replace disk and liner assembly with like assembly in new or good order. c. Oil-soaked Disk Liners. If lined disks are not badly worn, but are oil-soaked, wash them thoroughly in clean gasoline and dry with sir or heat.
TM 9-879 51 MOTORCYCLE, SOLO [HARLEY-DAVIDSON MODEL WLA] (4) Engage remaining steel disk with shell spHnes with "OUT" side facing outward. (5) Install "siDrung" (one side lined) steel disk, lined side inward, on clutch hub studs.
TM 9-879 51-52 CLUTCH (8) Install outer front chain guard (par. 102). (9) Check controls and clutch adjustment. If necessary, correct according to paragraph 48. 52. REPLACEMENT OF CLUTCH RELEASE BEARING (fig. 31). a. Clutch release lever acts against a thrust bearing and push rod assembly which actuates clutch releasing disk.
TM 9-879 53-54 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) Section XIV TRANSMISSION Paragraph Description , 53 Control linkage 54 Replacement of foot starter crank 55 Replacement of starter crsnk spring 56 Remove transmission 57 Install transmission 58 53.
TM 9-879 54 TRANSMISSrON or not shifter rod is correctly adjusted, so that when hand lever is moved to any gear position in tank shifter guide, transmission lever moves to the proper position to fully engage shifter clutch dogs and shifter cam spring plunger in cam-locsting notch (inside trans- mission).
TM 9-879 54-56 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (5) Readjust length of shifter rod by loosening rod end lock nut, and turning rod end (onto or off rod as necessary) until its bolt hole lines up with bolt hole in hand lever. (6) Replace bolt and tighten nut.
TM 9-879 56-57 TRANSMISSION RA PD 315720 STARTER CRANK ASSEMBLY BOLT, WASHER AND NUT Figure 33— Removing Sfarfer Crank Spring I shaft, prying it to rear to clear sprocket cover. Press all the way on squared shaft. (2) Hook end of spring in place on spring stud.
TM 9-879 57 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLAl A B C D E F G H HA PD 3IS72I A — TOOL BOX AND BRACKET ASSEMBLY AND MOUNTING BOLT, WASH- ER AND NUT B — BATTERY C— BATTERY BOX REAR MOUNT.
TM 9-879 57-58 TRANSMISSION mission, check clutch adjustment (par. 48) and transmission control linkage (par. 54) before replacing a faulty unit. b. Remove. (1) Drop rear end of skid plate (par. 111). (2) Remove front chain guard (par. 102). (3) Remove oil bath air cleaner and mounting bracket (par.
TM 9-879 58 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) i 5 D E 41 K e i. E o (n « 3 102.
TM 9-879 58 TRANSMISSION (2) Install front chain adjusting screw. Lift transmission to en- gage screw in frame notch. (3) Install large plain washers, lock washers, and nuts on the three transmission mounting studs. Do not tighten. (4) Install gear shifter rod by connecting to hand shifter lever and transmission gear shifter lever.
TM 9-879 58 ^ MOTORCYCLE, SOLO {HARLEY- DAVIDSON MODEL WLA) (15) Install outer front chain guard cover (par. 102). Connect rear chain oiler pipe to oil pump. (16) Install air cleaner and mounting bracket, air hose, and connections (par. 79). (17) Lift skid plate into position and install two mounting bolts, lock washers, and nuts.
TM 9-879 59 Section XV CHAINS AND SPROCKETS Paragraph Adjust front chain 59 Adjust rear chain and aline rear wheel 60 Chain oilers 61 Replacement of front chain 62 Replacement of rear chain 63 Chain repair tool 64 Replacement of engine sprocket 65 Replacement of countershaft sprocket 56 59.
TM 9-879 59 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) CHAIN COVER RAPD 310233 Figure 36—Froni Chain Inspection Hole Cover Removed (4) Turn adjusting screw clockwise (to the right) to move trans- mission backward and tighten front chain. Turn adjusting screw counterclockwise (to the left) to move transmission forward and loosen front chain.
TM 9-879 60 CHAINS AND SPROCKETS SKID PLATE RAPD 310234 Figure 27— Skid Plate Dropped to Show Location of Transmission Mounting Nuts TRANSMISSION MOUNTING NUTS FRONT CHAIN ADJUSTING SCREW ^^i=i'* RAPD 310235: Figure 3B— Transmission Mounting Nuts and Chain Adjusting Screw 60.
TM 9-879 60 MOTORCYCLE, SOLO (HARLEY-DAVrDSON MODEL WLA] moved either forward or backward, adjustment of the rear wheel brake is affected. b. When checking rear chain for slack midway between the sprockets, turn wheel and rotate chain to position of least slack.
TM 9-879 60-61 CHAINS AND SPROCKETS justment of either the chain or the wheel alinement can affect adjust- ment of the other, making it necessary to consider both adjustments at the same time. (1) Remove rear axle nut and lock washer (right side of vehicle).
TM 9-879 61 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) (1) Add thin (0.002-inch thick) washer under head of front chain oiler adjusting screw (fig. 40). Do not remove any washers already under head of screw. (2) To check results, refer to step b above.
TM 9-879 61-63 CHAINS AND SPROCKETS (1) Adjust oiler by adding thin (0.002-inch thick) washer under head of rear chain oiler adjusting screw (fig. 40). Do not remove any washers already under head of screw. (2) To checic results, refer to step b above.
TM 9-879 63 MOTORCYCLE, SOLO (HARLEY-DAVtDSON MODEL WLA) FINAL DRIVE CHAIN ROLLER CHAIN CONNECTING LINK CHAIN OUTSIDE PLATE °^^ CONNECTING LINK SPRING RA PD 310238 Figure 41— Rear Drive Chain and Connecting Unk (3) Pull on lower half of chain, guiding upper part while it rotates around countershaft sprocket, until removed.
TM 9-879 64-65 CHAINS AND SPROCKETS 64. CHAIN REPAIR TOOL (fig. 42). a. Damaged or broken chain links can be replaced with connect- ing (repair) links after bad links have been removed.
. TM 9-879 65-66 MOTORCYCLE, SOLO {HARLEY- DAVIDSON MODEL WLA) securely. Strike wrench with a hammer to make sure sprocket nut is very tight. (2) Install front outer chain guard (par. 102). 66. REPLACEMENT OF COUNTERSHAFT SPROCKET. a. Remove. (1) Remove foot starter crank (par.
TM 9-879 67-68 Section XVI FUEL SYSTEM Paragraph General 67 Carburetor adjustment 68 Throttle control wire adjustment 69 Carburetor removal 70 Carburetor installation 71 Fuel strainer 72 Carburetor bowl cleaning - 73 Fuel pipe 74 67. GENERAL, a. Carburetor is of the side-outlet, plain-tube type with a fixed venturi.
TM 9-879 68 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (11) Check condition and adjustment of circuit breaker points (par. 84). (12) Check ignition to battery wiring connections (diagram fig. 48). (13) See that battery is not entirely discharged by turniag on lights (tactical situation permitting) and observing brilliancy.
FUEL SYSTEM TM 9-879 68 THROHLE LEVER THROTTLE LEVER STOP SCREW figure 42— Throttle in Fully Closed Position CONNECTOR BLOCK THROTTLE LEVER STOP SCHEV/ Figure 44— rhrof#(e ,a Fully Open Posifion 1.
TM 9-879 69-70 MOTORCYCLE, SOLO [HARLEY-DAVIDSON MODEL WLA) 69. THROTTLE CONTROL WIRE ADJUSTMENT (figs. 43 and 44). a. Carburetor throttle is opened and dosed by means of the right handle bar grip, operating a control wire (within a housing) which connects to the throttle lever.
TM 9-879 71 FUEL SYSTEM 71. CARBURETOR CSSTALLATION. a. When installing carburetor be sure to fit the ^4-inch thick steel spacer (if one was originally fitted) between carburetor and manifold flanges, with two gaskets on one side and one gasket on the other side.
TM 9-879 71-73 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (3) Insert carburetor air intake fitting into end of air hose and mount fitting on carburetor with the four screws. Tighten air hose ciamp. (4) Connect fue! pipe to fuel strainer nipple by tightening the union nut and also the strainer union nut on bowl nipple.
TM 9-879 FUEL SYSTEM (1) Support vehicle on jiffy (side) stand. (2) Shut off fuel supply valve, (3) Remove bowl drain screw. Let fuel, water, and dirt run out of bowl. With drain screw still removed, open fuel supply valve (turn to left) and leave open only a few seconds, to allow fresh gasoline to flush out bowl.
TM 9-879 75-76 MOTORCYCLE, SOLO {HARLEY- DAVIDSON MODEL WLA) Section XVII INTAKE AND EXHAUST SYSTEM Paragraph Description 75 Air cleaner 76 Hose and carburetor fitting , 77 Remove air cleaner 78 Install air cleaner 79 Replacement of air cleaner mounting bracket 80 Exhaust system 81 75.
TM 9-879 76 INTAKE AND EXHAUST SYSTEM f Figure 46~Air Cleaner Oil Cup Removed (5) Install oil cup, making sure that retaining spring clips are fully engaged in lip of oil cup and hold oil cup securely to cleaner body.
TM 9-879 76 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) f --I.V -r-.trr. FILTER BODY figure 47— Air C/eaner, Disassembled 124.
TM 9-879 76-78 INTAKE AND EXHAUST SYSTEM ^T (5) Clean both filter elements thoroughly in dry-cleaning solvent. Allow elements to dry out (use air hose if available), (6) Clean oil cup and refill to indicated level mark. Use clean engine oil (seasonal grade).
TM 9-879 79-81 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) 79. INSTALL AIR CLEANER. a. Engage air cleaner hose connection in end of hose and mount cleaner assembly on frame bracket with two bolts, gear-toothed lock washers, and nuts. Securely tighten mounting nuts.
I TM 9-879 81 INTAKE AND EXHAUST SYSTEM b. Install Muffler Assembly. (1) Engage muffler pipe and exhaust pipe at mufiRer pipe clannp connection. Do not tighten clamp bolt nut as yet. (2) Attach muffler rear hanger bracket to frame bracket bolt, installing lock washer, and tightening nut.
TM 9-879 81 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) 10— INSTRUMENT PANEL TERMINAL 12— BAHERY POSITIVE. 13— BATTERY NEGATIVE (GROUNDl. IS— TERMINAL JUNCTION ON FRAME. 26— IGNITION— LIGHT SWITCH. 28— SPARK COIL. 33-^IRCUIT BREAKER. . 34— COIL TO TIMER WIRE.
TM 9-879 82-84 Section XVIII IGNITION SYSTEM Paragraph Description . . , , , , -, . - ^ 82 Spark plugs -. , . , . , ...... S3 Circuit breaker points , . _ , ..,,,, ,.,... 84 Condenser ,.,.,,. S5 Circuit breaker and timer assembly .,,,., ...,..,. 86 Coil to timer wire .
TM 9-879 B4 MOTORCYCLE, SOLO (HARLEY-DAVrOSON MODEL WLA) cloth to clean points. Contact surfaces, after considerable use, may not appear bright and smooth, but this is not necessarily an indi- cation that they are not functioning satisfactorily.
TM 9-879 84-85 '•-- • ' '^'- IGNITION SYSTEM l*^^ c. Remove Adjustable Conlacl Puint. (1) Remove the two lock screws and washer plate, securing ad- justable contact point assembly to timer base. Point assembly is free to be lifted off lever pivot stud.
TM 9-879 MOTORCYCLE. SOLO (HARLEY- DAVIDSON MODEL WLA) COVER RETAINER COVER HEAD TENSION (GROUND) SPRING TIMgR LEVER RAPD 310249 Figure 50— Circuit Breaker (Timer), Disassembled 132.
TM 9-879 85-86 IGNITrON SYSTEM c. Install. (1) Mount condenser an timer housing. Install lock washer and screw. Make sure small plain washer and large fiber washer are in place on condenser end terminal screw before connecting the brass terminal strip.
TM 9-879 86 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA] A B C D E F G PON M L K J H A— FLYWHEEL TIMING MARK IN CRANfKCASE INSPECTION HOLE. '^- B— COVER RETAINER. C— CIRCUIT BREAKER LEVER. D— CIRCUIT BREAKER CAM, ^4_ E_CONDENSER. 0- F_5PARK CONTROL WIRE HOUSING G — SPARK CONTROL WIRE.
TM 9-879 86 IGNITION SYSTEM of breaker cam in position shown in figure 51. Do not install base mounting screws as yet. (7) Install timer head assemblj' so that spark control lever is witiiin the advance and retard quadrant (fig. 51). NOTE: Do not install cover retainer until later.
TM 9-879 86 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) (1) See that circuit breaker points are adjusted for correct gap of 0.022 inch Cpar. 84 f). (2) Advance timer lever fully (toward engine).
TM 9-879 86 %, IGNITION SYSTEM (5) When exact position is found, where points just start to open, flywheel mark should be in the center of the inspection hole. (S) It" flywheel mark is not in center of hole when points open, readjust ignition timing as necessary (slower or faster) by means of the timer head and band adjustment.
TM 9-879 86-87 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (8) With ignition timing correct, front cylinder piston is ^30 inch before top dead center, on compression stroke, when circuit breaker points just start to open. At this point spark occurs, igniting front cylinder fuel charge.
TM 9-879 87-89 -' - IGNITION SYSTEM (7) Install timer head on base (par. 86 c (II)). (8) Connect spark control wire to timer lever and adjust (par. 88). (9) Connect battery negative post wire to frame ground terminal. (10) Swing air cleaner bracket back into place and install two bolts, washers, and nuts securing bracket tr frame clips.
TM 9-879 89 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) CONDENSER GROUND TERMINAI ON COIL HOUSING FLEXIBLE BRAID CONNECTOR A PD 318204 Figure 54— Coil Front Connections Showing Radio Bonding and Noise Suppression Condenser (5) Swing air cleaner and bracket assembly outward to gain access to coil rear terminals.
TM 9-879 89 IGNITION SYSTEM (2) Connect terminals of the two green wires to coil front terminal screw. Refer to wiring diagram, figure 48. (3) Connect radio bonding to coil front ground terminal. Tighten nut securely. 1 (4) Connect coil to timer wire terminal to coil rear terminal screw.
TM 9-879 90 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA] Section XIX GENERATING SYSTEM Poia graph Description 90 Clean commutator , 91 Armature bearing special lubrication 92 Remove generator 93 Inst.
TM 9-879 90-91 <r GENERATING SYSTEM current output (approx. 8 amperes) when vehicle lights are in use. Generator uses the third (regulating) brush system of current regu- lation. A cut-out relay serves as a magnetic switch in the generator- battery circuit, also operating the instrument panel green signal light to indicate generator charge.
I TM 9-879 91 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (2) Remove the two end cover screws and pull end cover off generator. (3) Clean armature commutator with No. 00 sandpaper until bright and clean. Blow out with air. CAUTION: Do not remove or disturb brashes in their holders.
^ . - TM 9-879 92-93 GENERATING SYSTEM 92. ARMATURE BEARING SPECIAL LUBRICATION (fig. 57). a. At the 6.000-mUe second echelon preventive maintenance service period, the commutator end bearing must be hand-packed.
TM 9-879 93 MOTORCYCLE, SOLO [HARLEY- DAVIDSON MODEL WLA) GENERATOR SCREWS figure SB—Removing Generator End Mounting Screws GENERATOR SCREWS GENERATOR CLAMP STRAP Figure 59— Removing Generator Str.
TM 9-879 93-95 GENERATING SYSTEM count number of paper shims between generator and cradle. Lay these shims aside to be used again when generator is reinstalled.
TM 9-879 95 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA} b. Correct adjustment of relay point gaps and tensioning of armature springs require use of precision electric meters and expert knowledge on the subject. A faulty relay, other than removing cover and cleaning with air, should be replaced.
TM 9-879 96 •^ Section XX BRAKE SYSTEM paragraph Rear wheel brake 96 Front wheel brake , . . . 97 96. REAR WHEEL BRAKE (figs 60, 61, and 62). a. Linkage. Brake foot pedal on right side of vehicle is connected to bell crank (located on rear footboard support rod) by means of the front brake rod (nonadjustable).
TM 9-879 96 MOTORCYCLE, SOLO (HARLEY-DAVrOSON MODEL- WLA) (3) Turn clevis onto (clockwise) brake rod to shorten rod and take up foot pedal free play. (4) Turn clevis oft" (counterclockwise) brake rod to lengthen rod and increase foot pedal free piay.
TM 9-879 96-97 BRAKE SYSTEM (3) Disconnect brake rod clevis at brake operating lever. (4) Place end of large screwdriver blade between ends of brake shoes at pivot stud. Move brake-operating lever forward to hold brake shoes in fully expanded position, and pry ends of shoes off pivot stud without removing brake shoe springs.
TM 9-879 97 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA] (2) Insert lower end of control wire through clamp nut. then through clevis and back through clamp nut again. Grasp end of wire with pliers and pull until all slack is taken up. Then, while pulling wire snug, tighten clamp nut securely.
TM 9-879 97 BRAKE SYSTEM I (1) Engage ends of springs in shoe holes from the inside before instalHng shoes in brake side plate. (2) With shoes and springs assembled, install the shoes so that ends of shoes will slip over pivot stud and shaft operating cam.
TM 9-879 98 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WIA) Section XXI STEERING CONTROL Forks ,...,.... rv.... ... 98 Steering damper ,.,..-. -'.,.. 99 Handle bars 100 Handle bar controls 101 98. FORKS (figs. 63 and 64). a. Either the spring fork can be removed and replaced, or the complete fork assembly (spring fork and rigid) can be replaced.
TM 9-879 98 STEERING CONTROL (5) Install the two spring rod bushings. Install upper bumper springs and upper recoil springs on the fork rods, applying grease to rods. (6) Remove blocks from under vehicle. f* (7) Sit on mudguard to compress fork cushion (lower) springs.
TM 9-879 98 MOTORCYCLE, SOLO [HARLEY- DAVIDSON MODEL WLA) -f-^-T- r .'^ "^ Mt RA PD 315721 ' I ' Figure 63~Spring Fork Disassembled ISA,.
TM 9-879 98 STEERING CONTROL A— UPPER (RECOIL) SPRINGS B — UPPER BUMPER SPRINGS C — SPRING ROD LOCK NUTS (ACORN-TYPE) " - D — SPRING ROD BUSHINGS I E — LARGE SPRING ROD NUTS F_LOWER CUS.
TM 9-879 98 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) ignition and li^ht switch and care must be exercised not to break this wire if it is not disconnected fronn the switch. (6) Disconnect battery negative ground wire at frame connec- tion. Remove blackout light (par.
TM 9-879 98 BAR STEERING CONTROL PRY BAR - r* STRAP figure 64-Cornpress»ng Cosh/on Springs for Spring fork Assembfy.
TM 9-879 98 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) headlight bracket mounting. Fit right and left mudguard brace clip locks to right and left side rocker plate studs respectively. Do not put on nuts until after installing ammunition box carrier and scab- bard carrier.
-vs- STEERING CONTROL TM 9-879 99 KEYED STEEL WASHER FIBER WASHER OPERATING LEVER ACTUATING SLEEVE RELEASING SPRING PLAIN WASHER »•. - .'-^ •^.• LOCK NUT ADJUSTING NUT CONE AND HANDLE- BAR LOCK NUT CONE LOCK PLATE HANDLEBAR FORK FITTING UPPER (ADJUSTING! CONE FORK CROWN FIBER DISK CUSHION SPRING^ / /O^ ROD^ ^ / .
TM 9-879 99-100 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (L) Assemble parts on rod end (fig. 65). making sure that the bent down Hp of the steel pressure disk engages with notch in end of the rod lock plate.
TM 9-879 100 STEERING CONTROL (6) Remove steering damper rod upper end fittings in the fol- lowing order: Lock nut, adjusting nut, keyed steel washer, fiber washer, operating lever, and operating sleeve (screws into end of fork stem). Removal of these parts gives access to handle bar lock nut.
TM 9-879 100-101 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) end clamp on cylinder stud near timer. Secure clamp under cylinder stud nut. Secure wire cable under clamp on left side of frame front tube, with white paint mark slightiy ahead of clamp front edge.
TM 9-879 101 STEERING CONTROL strike punch two or three sharp blows to "free" nut in handle bar end threads. Remove nut as above. NOTE: Nut remains inside the grip and is removed with the grip and spiral sleeve assembly. (3) Remove grip and spiral assembly from handle bars.
TM 9-879 101 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (4) Install grip and spiral assembly by engaging plunger roller in spiral opening in end of grip sleeve. Grip spiral sleeve nut can best be started without danger of cross threading, by holding grip assembly back slightly while starting nut in handle bar end.
TM 9-879 102 Secfi'on XXn SHEET METAL AND EQUIPMENT paragraph Chain guards 102 Carriers 103 Mudguards 104 Battery box 105 Tool box 106 Tanks 107 Stands 108 Saddle post 109 Safety guards 110 Skid plate Ill 102. CHAIN GUARDS. a. Remove Outer Front Chain Guard (figs.
TM 9-879 102 MOTORCYCLE, SOlO {HARLEY- DAVIDSON MODEL WLA] SAFETY GUARD END ^ i^EAR SUPPORT ROD :^ FOOTBOARD SIDEBAR 5KID PL^TE BRACKET ^^:-^ « -N. FOOTBOARD SIDEBAR / X NUTS AND WASHERS l^ CABLE END.
TM 9-879 ] 02- 103 SHEET METAL AND EQUIPMENT (4) Attach front end of sidebar. Install extended nut and lock washer to secure front sidebar and support rod mounting. (5) Install skid plate support bracket on support rod (in center of chain guard), tightening nut on bolt.
TM 9-879 103-104 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) d. Remove Luggage Carrier. (1) Loosen straps of both saddlebags, and remove saddlebags from keyhole notches in luggage carrier side plates. Remove nuts from right and left side mounting studs, which secure luggage carrier to frame clips.
TM 9-879 104 SHEET METAL AND EQUIPMENT b. Install Front Mudguard. (1) Locate mudguard in mounting position. Engage slots in stay- clips on rocker plate studs, installing the special locks in the clip slots. NOTE: Brace dip locks are made for ri^ht and left side in- stallation.
TM 9-879 104-105 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) to frame axle clips. NOTE: // brake side cover interferes with locat- ing nut on right side, loosen the brake sleeve nut and push brake side cover assembly inward far clearance. Be sure to retighten brake sleeve nut.
TM 9-879 105-106 SHEET METAL AND EQUrPMENT (6) Remove the two nuts securing rear safety guard center con- nection to mounting studs. Unscrew mounting studs to free the plate nut which clamps the battery box bracket to frame cross member. (7) Remove battery box from right side of vehicle.
TM 9-879 1.07 MOTORCYCLE, SOLO (HARLEY-DAVrOSON MODEL WLA] GEAR SHIFTER Af<ID ROD BOLT. WASHER AND NU HAPD 3102« OIL VENT PIPE HOLLOW eOLT MOUNTING BOLTS AND WASHERS W«HERS AND NUTS NIPPLE CAP MFG. No. 35S3-IS figure 70— foe/ and Oil Tanks Removed 107, TANKS Cftg.
TM 9-879 107 SHEET METAL AND EQUIPMENT (5) Shut off fuel supply. Disconnect fuel pipe at tank union, nipple. (6) Remove nuts, lock washers, and fiat washers from the two front (one upper and one lower) mounting bolts, and nut, lock washer, and flat washer from the rear mounting bolt.
TM 9-879 107-108 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) g. Install Oil Tank. (1) Position oil tank oa vehicle. Make sure that composition, buffer is in place before installing mounting bolts from right side of vehicle. Pry up on tank top strip in order to slip top edge of tank under strip.
TM 9-879 108 SHEET METAL AND EQUIPMENT FRONT HINGE LUBRICATION FITTING CLEVIS PIN SPRING SADDLE Figure 71— Saddle and Suspension (3) Remove the two nuts from U-bolt which secure safety guard bracket to frame tube, remove bracket from U-bolt, and slide safety- guard assembly out of support rod.
TM 9-879 108-110 MOTORCYCLE, SOtO (HARUY-DAVfDSOW MODEL WIAJ clutch control cable end to foot pedal stud. . .tailing plain washer and cotter pin. Install washer and extende'i nut on end of front support rod.
TM 9-879 no-in SHEET METAL AND EQUIPMENT b. Install Front Safety Guard. Locate safety guard and mount upper bracket to frame tube with the two U-bolts, washers, and nuts, but do not tighten Tiuts as yet.
TM 9-879 1 11 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (2) Remove left side mounting. Remove nut and bolt which secures lower end of hanger bracket to skid plate on left side of vehicle. Drop rear end of skid plate. c. Install Dropped Skid Plate.
TM 9-879 112-113 Section XXIII BATTERY, LIGHTING SYSTEM, HORN Paragraph Description 112 Battery 113 Headlights U4 Tailiights , . US Ignition and light switch 116 Horn 117 Wiring 118 112. DESCRIPTION. a. Lighting system and horn are supplied 6-voIt current from the 22-5mpere-hour battery.
TM 9-879 113 MOTORCYCLE. SOLO (HARLEY-DAVIDSON MODEL WLA) VfiBEEH -I (ItD Figure 73~Comptete Wiring Diagram 182.
TM 9-879 113 BATTERY, LIGHTING SYSTEM, HORN 1. SWITCH TERMINAL (Three wires ^ connected) — Black wire from black- out maft<er light 24,- laillight cable green wire ftom blac!<out (aiHight 22; .
TM 9-879 113 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA] 20. STOP LIGHT SWITCH— Red wire i- from iuncMon terminal 19; green wire (rom coil rerminal. 21. BLACKOUT STOP LIGHT (Top sacUe! in righl tailUghi) — Toillight coble yellow wire from switch terminal 5- 22.
TM 9-879 113-114 BATTERY, LIGHTING SYSTEM, HORN COVEB WING MUrS NEGATIVt TERMINAL iGROUNDEDl SOX COVER HUBBER PAD RA FD 31034^ KJS)TIVE TERMINAL flLLER PLUGS fH.lER HOLES Figure 74— Battery Box Open and Filler Plugs Removed for Service Disconnect positive and negative wires from battery terminals.
TM 9-879 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) beam for height and direction. The top of main beam of hght should register on wall or screen even with, but not higher than.
TM 9-879 114-115 BATTERY, LIGHTING SYSTEM, HORN switch in light body to permit turning it off while other blackout lights are in use. Blackout headlight body is secured to mounting bracket by means of a conical washer, lock washer, and mounting nut, providing a swivel mounting to permit light adjustment.
TM 9-879 115-116 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA] e. Stop and Taillight Switch. This switch is operated by brake pedal and is located on end of rear support rod on right side of vehicle. Refer to wiring diagram (fig- 73) and paragraph 118 for wiring connections.
TM 9-879 116 BATTERY, LIGHTING SYSTEM, HORN PD 310270 Figure 78— Wiring Cabtes, Left Side ,^; RA PD 31027) Figure 79— Wir/ng Cables, Right Side 189.
TM 9-879 117-118 MOTORCYCLE^ SOLO fHARLEY- DAVIDSON MODEL WLA) 117. HORN. a. Description. Horn is mounted to headlight bracket by means of four bolts, lock washers, and nuts. One horn terminal is connected with operating button, and other terminal is connected to No.
TM 9-879 119-120 Section XXIV INSTRUMENT PANEL Poragraph Panel cover 119 Indicator lights 120 Speedometer head 121 119. PANEL COVER (fig. 80). a. Remove. Remove speedometer light switch knob and remove screw. Remove hexagon-head screw on front of cover.
TM 9-879 120-121 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA] charge (green) indicator light, and one for speedometer illumination. b. Remove and/or Install. Remove and or install panel cover (par. 119). c. Test Generator-Charge (Green) Indicator Lamp.
TM 9-879 122-123 Section XXV TIRES, WHEELS, AND HUBS Paragraph Description ,. ... ..."...,. 122 Tires .. 123 Rims and spokes 12- Front wheel replacement 125 Front wheel hub adjustment 126 Rear wheel replacement 127 122. DESCRIPTION. a. Wheels have drop center rims to accommodate 4.
TM 9-879 123 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) 7«^^=^ BRAKE SHACKLE ARM LOCK ^ RAPD 310254 ^ /^ SHACKLE BOLT AXLE NUT AXLE Figure 81 —Disassembly for front Wheel Removal 194.
TM 9-879 123-125 TrRES, WHEELS, AND HUBS V. Install, Before applying casing to rim, see that rubber rim strip is in place in rim well and that rim strip valve hole alines with valve hole in rim. < (1) Start either bead of casing over rim edge. Work around wheel until entire bead is on rim.
TM 9-879 125 MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL WLA) b. Install (fig. 81). NOTE: At the time wheel and brake assembly- is located in front fork, and before axle is installed, make sure that the curved slot in brake stabilizer plate engages with the button end of the left-front rocker plate stud.
TM 9-879 126 TIRES, WHEELS, AND HUBS 126. FRONT WHEEL HUB ADJUSTMENT. a. Front wheel, ball-bearing hub. is similar to a bicycle front hub as far as adjustment is concerned. Do not completely disassemble hub for adjustment as balls are not in retainers, and will fall out when cone is removed.
TM 9-879 126-127 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) (4) Tighten cone lock nut. After tightening nut. again try for slight wheel play on bearing. Sometimes tightening lock nut takes up on bearing play. If necessary, readjust for desired results when cone lock nut is tight.
TM 9-879 127 TIRES, WHEELS, AND HUBS tool box bracket, securing lock in this position with wing nut (fig. 84). (5) Remove axle nut (right side of vehicle), using vehicle kit wrench "J" (fig. II). (6) Pull out axle from left side of vehicle. (7) Remove spacer from between wheel hub end and left side of frame.
TM 9-879 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) REFERENCES STANDARD NOMENCLATURE LISTS Motorcycle, chain drive (Harley-Davidson) SNL G-S23 Cleaning, preserving and lubricating materials. recoil fluids, special oils, and miscellaneous re- lated items SNL K-l Soldering, brazing, and welding materials, gases, and related items .
TM 9-879 INDEX A Poga No. Air cleaner 122 Allocation of maintenance by echelons 40 Ammunition box carrier 169 Armature bearing special lubrication 145 Auxiliary brake 12 B Battery, lighting system, horn battery check electrolyte level. 181 installation.
TM 9-879 MOTORCYCLE, SOLO [HARLEY- DAVIDSON MODEL WLA) C — Cont'd Page No. Controls and operation — Cont'd stopping the engine 16 towing vehicle to start engine engine starting with dead battery 18 Data, tabulated engine 72 vehicle specifications 7 capacities 8 performance 7 Description battery, lighting system, horn.
1— Cont'd Page Ignition system circuit breaker points — Cont'd breaker lever installation breaker lever removal. coil to timer wire installation removal condenser installation. removal description spark coil installation ,' removal spark control adjustment .
TM 9-879 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA] l> Paga Ne. Lighting system 181 Lubrication introduction 30 lubrication guide. 30 general . . 30 lubrication notes. 30 oilcan points 34 supplies 30 warning light 34 M Maintenance allocation allocation of maintenance by echelons clutch 40 controls and linkage 40 electrical group 41 engine (V.
:0 Page Second echelon preventive maintenance road test chart maintenance operation services first echelon participation frequency general procedures specific procedures .
TM 9-879 MOTORCYCLE, SOLO (HARLEY- DAVIDSON MODEL WLA) S — Cont'd Page No. Stowage on vehicle (tools and equipment) 35 T Tabulated data engine 72 vehicie specifications 7 capacities 8 performan.
NOTES.
NOTES.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Harley-Davidson WLA (1943) è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Harley-Davidson WLA (1943) - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Harley-Davidson WLA (1943) imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Harley-Davidson WLA (1943) ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Harley-Davidson WLA (1943), ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Harley-Davidson WLA (1943).
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Harley-Davidson WLA (1943). Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Harley-Davidson WLA (1943) insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
