Harley-Davidson WLA Service Manual 1929-1952 (P/N TM 9-879)

• Original 110-page OEM publication covering 1929–1952 Harley-Davidson WLA and Solo 45 models, plus 1941 and later Servi-Car variants
• In-depth overhaul data for the 45 cubic inch (750 cc) side-valve L-head V-twin engine and drivetrain architecture
• 15 chapters of service protocols featuring 128 labeled technical illustrations
• Comprehensive fits, tolerances, and electrical system tables

Engine and Drivetrain Documentation

Want to know exactly what is inside this OEM manual? It breaks down the complete teardown and overhaul process for the classic 45-inch V-twin. You get a clear look at the internal mechanics, from cylinder and piston assembly removal to connecting rod bearing inspections and critical flywheel alignment. The book does not stop at the block. It covers the entire fuel and intake system, including detailed breakdowns of the Linkert M88 carburetor. You will also find comprehensive sections detailing ignition timing, electrical generating systems, and essential chassis maintenance. Working on vintage motorcycle internals requires strict adherence to factory procedures. Always verify clearances and utilize proper shop equipment before starting any engine teardown to prevent component damage or personal injury.

Precision Data and Technical Specifications

Guessing on tolerances is a fast track to a blown motor. This literature delivers the exact tolerance charts, valve clearance settings, and torque specs required for a proper rebuild. For example, standard cylinder bore is defined precisely at 2.7445 to 2.7455 inches. It specifies intake valve clearance (engine cold) at 0.004 to 0.005 inches, while drivetrain tables mandate mainshaft end play between 0.003 and 0.005 inches. Having these exact factory numbers on your workbench takes the guesswork out of the assembly process. Keep in mind, this product page serves strictly as a table of contents and overview of the publication, not a how-to repair guide.