1942 Harley Davidson Solo WLA Workshop Service Repair Manual

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. — Tho information contained in re- strictad documents^ and the essential characteristics of restricted materiel, may be given to any person irnown to be in ffie servica of the United States, and to persons of undoubted loyalty and discretion who are cooperating in Government work, but will not be com- municated to the public or to the press except by authoriied mili- tary public relations agencies, (See also paragraph 18b, AR 380-5, 28 September 1942.) CONTENTS PART ONE-VEHICLE OPERATING INSTRUCTIONS Paragraphi Page» Section I IntroductioQ i-2 3-6 II Description and tabulated data S— 7-8 III Controls and operation S-13 9-19 IV First echelon preventive maintenance services 14-18 20-29 V Lubrication 19-20 30-34 VI Tools and equipment stowage on the vehicle 21-23 35-38 PART TWO-ORGANIZATIONAL MAINTENANCE Section VII Maintenance allocation 24-25 39-44 VIII Second echelon preventive maintenance services 26 45-59 IX Organization tools and equipment 27 60 X Trouble shooting 28-38 61-71 XI Engine 39-44 72-77 XII Engine— removal and installation 45-46 78-34 Xni Clutch -. 47-52 85-95 *For supersession of quartermaster manuals, refer to paragraph 2.

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 .. 67-74 115-121 XVII Intake and exhaust system 75-51 122-128 XVIII Ignition system 82-89 129-141 XIX Generating system 90-95 I42-I4S XX Brake system 96-97 149-153 XXI Steering control 98-101 154-166 XXII Sheet metal and equipment. . . , 102-Ul 167-180 XXIII Battery, lighting system, horn. ,112-118 181-190 XXIV Instrument panel U9-121 191-192 XXV Tires, wheels, and hubs 122-12? 193-199 References 200 Index 201

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. b. In addition to a description of the Harley-Davidson motorcycle, this manual contains technical information required for the identification, use, and care of the materiel. The manual is divided into two parts. Part One, section I through section VI, gives vehicle operating instructions. Part Two, section VII through section XXV. gives vehicle maintenance instructions to using arm personnel charged with the responsibiiity of doing maintenance work within their juris- diction. c. In all cases where the nature of the repair, modifications, or adjustment is beyond the scope or facilities of the unit, the responsible ordnance service should be informed so that trained personnel with suitable tools and equipment may be provided, or proper instructions issued. 2. SUPERSESSION OF QU.ARTERMASTER MANXJ.4LS. a. This technical manual, together with TM 9-1S79, supersedes and replaces the following Quartermaster Corps publications: (1) TM 10-1175— Maintenance manual, motorcycle, solo, Harley- Davidson (Modei 42-WLA), 11 September 1941. (2) TM 10-1177— Maintenance manual, motorcycle, solo, Harley- Davidson (Models 1940-41-42), II September 1941, (3) TM 10-1331— Maintenance manual, motorcycle, chain drive Harley-Davidson (Model 42 WLA, solo), (4) TM 10-1359— Instruction folder (45-A) motorcycles, solo, Harley-Davidson (Model 1941 WLA 45), 25 November 1941. (5) TM lQ-1361-rnstruction folder (4S-B) , motorcycle, solo, Harley-Davidson (Model 1941 WLA 45). 25 November 1941. *To provide operating Instructions with the materiel, this technical manual has been published in advance of complete cechnicai review, .\ny errors or omissions will be corrected by changes or. if ex:enstve, by an early revision.

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 FOOT PEDAL CARBURETOR CHOKE LEVER STEERING DAMPER NSTRUMENT PANEL SIGNAL LIGHTS OIL TANK THROTTLE CONTROL GRIP IGNITION AND LIGHT SWITCH REAR (ServiceJ BRAKE FOOT PEDAL SPEEDOMETER LIGHT SWITCH -«5= CAUTION PLATE STARTER CRANK RA ?0 315708 Figure I— Top View of Motorcycle 4

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. Air-cooled engines rely upon movement of air over cylinder and head radiating ftns, and upon circulation of oil for dissipation of excessive heat. Motorcycle engines, therefore, under no conditions should be operated for more than 1 minute when motorcycle is not in motion. 4. DATA. a. Vehicle Specifications. Type of engine 2-cyiinder, V-type L-head, air-cooled Cylinder bore 23/^ in. Stroke 3^%q in. Engine number (serial) left side engine base, below front cylinder. Wheelbase 4 ft U14 in. Length over-all . 7 ft 4 in. Width over-all (handle bars) 3 ft 5 in. Wheel size 18 in. Tire size 4.00 x 18 in. Tire type Drop center Weight of vehicle (without rider or armament) 540 lb Ground clearance (skid plate) 4 in. Kind and grade of fuel Gasoline: 72 octane or higher High gear ratio 4.59:1 Engine sprocket 31-tooth Countershaft sprocket l7-tooth Rear wheel sprocket 41 -tooth b. Performance. Maximum allowable speed 65 mph Miles per gallon (hard surface) 35 7

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.S. gal Oil tank capacity (right tank) 154 ^'S- gal Transmission capacity Va P^

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 Stopping and parking vehicle 11 Towing vehicle to start engine 12 Running-in new engine (or vehicle) 13 5uc<owT uoHT swrrcH UtADUGHT CMMMIKG swnCH STEERING OamBES control neEM. aSNEuATO" SIGNAL irOHT lED, on ClRCUUnON SIONAl UGtIT GASOIIHE TANK ClLTTCH Foot «OAl CAfiBOflETOH CMOKE LEVtR imON AND UOHI SWttCH .PEEDQWHEB UCHI SWnCM CADTIOH ^lATE SEA? 3SAXf fOOI f£0*L RA PD 310201 figure 4—Contro/s 3. CONTROLS (fig. 4). a. Controls are peculiar to the motorcycle. The rider must become thoroughly familiar with the location and use of all control devices before attempting to operate vehicle. b. Gasoline Valve (figs. 5 and 6). Gasoline valve is located in left tank, forward. Valve is closed by turning to the right, finger tight. Turning to left opens valve. Valve is in normal operating position

1942 Harley Davidson Solo WLA Workshop Service Repair Manual

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