Harley-Davidson Panhead Service Manual - 1948-1957 - Rigid

Oct 24, 2026

Harley-Davidson Panhead Service Manual covering service, inspection, and maintenance procedures for OHV Twin Models from 1948 through 1957, with notes for specific models or years when indicated. Includes general specifications and product sections such as lubrication charts, signal lights, engine starting and stopping guidance, engine repair procedures, chassis and chassis components, shop data for measurements, and detailed diagrams for systems including forks, brakes, oil pumps, and lower end components.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages225

Reading Time9 h 27 min

AccessFree to download

Product

General Specifications

Lubrication Chart

Signal Lights

Starting Engine

Stopping Engine

Running in New Engine

High Speed Tips

Trouble Shooting Charts

Chassis

Wheels

Removal

Servicing Wheel Hubs

Replacing Rear Wheel Sprocket

Spoking Wheels

Truing Wheels

Removing & Installing Tires

Shop Data

Handlebar Controls

Removing & Installing Forks

Fork Frame & Handlebar Alignment

Brakes

Engines

Lubrication

Engine Repair Procedure

Cylinder & Piston Service

Cylinder Head Assembly

Valve Guides and Valve Train

Oil Pump

Lower End Diagrams and Procedures

# Harley-Davidson PanheadServiceManua 1948-1957 Rigid his Service Manual is dedicated toattaining for Harley-Davidson motor-cycle owners the highest degree of per-formance and satisfaction. Except when a particular model or yearmodel is indicated,the information inthis manual applies to O.H.V.TwinModels back to 1948. Product General Specifications 1948-1954..4General Specifications 1955-1957..6Lubrication Chart ...............8Signal Lights...................9Starting Engine..... . 9Stopping Engine ... .......9Running in New Engine..........9High Speed Tips... 10Trouble Shooting Charts.........10engine... .. .10generator ....................11carburetor...…. ....11transmission ..................11brakes ..... ............12General Lubrication............12Lubrication Chart ..... .....13Servicing Air Cleaner..... ...14Initial Servicing of New Motorcycle.14first 250 miles.............14first 750 miles ...............14first 1500 miles..........15Regular Interval inspection &Maintenance. ...15Care &Lubrication of Drive Chain..16adjusting drive chain. ..16adjusting front chain..........16adjusting rear chain ... ....16lubrication front chain .........16lubrication rear chain....…...17repairing drive chain.... ...17Clutch &gear shifter. 18Compensating sprocket (early style).18 ## Chassis Wheels ........................20general. 20removal ............…........20removal(side car)..… ..21servicing wheel hubs ..........22replacing rear wheel sprocket...23spoking wheels ... ...23truing wheels ... ...24removing &installing tires.....25 ## Shop Data wheels ....................26Servicing Handlebar Controls....28early model. 28late model .. … .29Removing &Installlng Forks….29springers..… 31Fork Frame &Handlebar Alignment.34rough check for fork alignment...34 [3] rough check for frame alignment.34 frame alignment diagram… 35 springer shock. ..36 Glide Forks...…. ...37 general.....................37 changing oil. ..37 glide fork diagram ............39 glide fork diagram(adjustable)..40 disassembling fork sliders &tubes 41 adjusting steering damper......41 adjusting fork trail(adjustable)...42 disassembling front fork ......42 steering head bearings .. .43 replacing slider bushings.......43 inspecting &servicing fork ....44 straightening fork tubes.. .44 straightening fork stem &bracket assembly.. ..45 assembling fork .... ....46 assembling fork(adjustable)....47 Brakes......... ...........48 disassemble front brake(glide)..48 inspection &servicing(glide)...48 assembling front brake(glide)..48 adjusting front brake cable(glide)48 adjusting front brake shoes (glide)48 glide brake diagram... ...49 springer brake diagram… .49 rear brake diagram... ..50 adjusting rear &springer brakes.51 servicing rear &springer brakes.51 Servicing Saddle Spring Post...52 Engines general ..………… .54 engine diagram ...............55 lubrication . 56 winter lubrication.∴...........57 changing oil................57 oil pressure signallight ... .57 operating oil pressure.. .57 oil filter ............... ...57 pressure oil system ...........58 return oil system.. 59 engine repair procedure......59 pressure oil system diagram ....61 return oil system(early).. .62 return oil system (late). ..63 disassembling cylinder &piston..64 refinishing cylinders. ...65 fitting piston rings .. ...66 connecting rod bushings.......67 straightening connecting rods...68 assembling cylinder &piston...69 Shop Data cylinder reboring &piston fitting..70 pistons &rocker arms.. ..72 removing cylinder head assembly.73disassembling cylinder head 73replacing valve quides. 73cylinder head diagram. 74replacing valve seats 75grinding valve

FAQs

Which motorcycle models and years does this Panhead Service Manual cover?

It applies to Harley-Davidson OHV Twin Models back to 1948, and includes coverage through 1957 with notes when a specific model or year requires different information.

What major topics are included in the lubrication and engine section?

It contains lubrication charts and guidance, lubrication procedures including winter lubrication, oil pressure signal and system information, and detailed engine repair and component servicing topics.

What chassis and shop data procedures are covered besides engine work?

The manual includes chassis topics such as wheels and tire removal, shop data for handlebar controls and fork servicing, and brake disassembly, inspection, servicing, and adjusting procedures.

Oct 24, 2026

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