1948-1957 Harley-Davidson Panhead Service Manual
Get your vintage motorcycle back on the road with this comprehensive service manual covering 1948-1957 Harley-Davidson Panhead models, including detailed diagrams and repair procedures. Part No. 9600-33.
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Harley-Davidson Models Covered & Key Technical Specifications
Models: Harley-Davidson Panhead (O.H.V. Twin), E, EL, F, FL, FLH
Sub-models / Variants: Solo, Sidecar
Trade Names: Hydra-Glide
Build Years: 1948–1957
Serial Numbers: Engine serial numbers are stamped on the left side of the engine crankcase.
Technical Data:
- Engine displacement: 61 cu. in. (E/EL) and 74 cu. in. (F/FL/FLH)
- Engine configuration: 45-degree V-type, 2-cylinder, overhead-valve (OHV)
- Compression ratio: 6.5:1 to 8:1 depending on model variant
- Transmission: Constant mesh, 4-speed (foot or hand shift), optional 3-speed with reverse
- Wheelbase: 59 1/2 in. (1948–1954 models), 60 in. (1955–1957 models)
- Horsepower: 8.77–9.44 (N.A.C.C. rating) or 55–60 HP at 5,400 RPM (FL/FLH models)
- Tire inflation: 12–26 lbs. depending on tire size and passenger load
Harley-Davidson Manual Features & Content Preview
1948–1957 Harley-Davidson Panhead Technical Coverage
- Covers 1948–1957 Harley-Davidson Panhead O.H.V. Twin motorcycles, including E, EL, F, FL, and FLH variants in both solo and sidecar configurations
- Original OEM publication, referenced for the 1948–1957 rigid frame production era
- Includes 124 exploded-view diagrams, 3 detailed wiring schematics, and extensive service data charts for engine, chassis, and electrical systems
- Delivered as a direct download the moment payment clears
- Indexed PDF search covers every chapter and appendix
- Stored against your account so you can retrieve it after a hard-drive loss
- Laid out for standard letter and A4 printing
- This technical volume is the authoritative shop reference documenting the maintenance and overhaul specifications for the iconic rigid-frame Panhead engine series
Service Manual Chapter Walkthrough
The text details maintenance protocols for the O.H.V. Twin engine series, beginning with clear engine diagrams and system lubrication charts. Core sections focus on chassis maintenance, covering wheel servicing, spoke alignment, and handlebar control adjustment for various models. The publication extensively documents the Hydra-Glide fork assembly, steering head bearings, and brake system overhaul procedures. Final segments detail the complex oil pressure systems, return circuits, and electrical generator repairs necessary to sustain vintage performance.
Specification Highlights
Engine overhaul data includes piston ring gaps, valve seat widths, and hydraulic push rod servicing information. Tappet adjustment specifications are provided in multi-stage sequences to ensure proper compression sealing in the O.H.V. head assembly. Torque values for head bolts are listed at 65 ft-lbs for FLH engines. Valve-to-guide clearance is documented at 0.004–0.006 in. for exhaust valves. For those interested in how factory workshop documentation is structured, this guide provides clear insights into late 1940s and 1950s motor service standards. Proper tire inflation is essential for handling, with solo rider pressures defined at 12–16 lbs. based on tire dimensions. Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions.
An official 1948–1957 Harley-Davidson Panhead OEM service manual covering E, EL, F, and FL models, documenting detailed engine, chassis, and electrical specifications for the overhead-valve V-twin rigid-frame engine series.
Document Reference: Original OEM manufacturer publication
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