1945-1960 Jaguar Mark VII & XK 120 Factory Service Manual • Publication C4085-91017

Jaguar Mark VII & XK 120 Service Manual: 1945–1961 Edition

• Comprehensive technical reference for 1945–1961 Jaguar Mark VII, XK 120, XK 140, XK 150, and Mark VIII/IX series, covering the iconic 3.4L twin-cam engine.
• Digitized from official Jaguar Publication C4085-91017, consolidating multiple supplements like the Laycock de Normanville Overdrive and Lucas electrical schematics.
• Features 31 indexed technical plates and 15 exploded-view diagrams to quickly map out cylinder head assemblies and timing gear configurations.
• Ideal resource for accelerating workshop repair planning, delivered as an instant PDF download right after checkout.
• Fully text-searchable file structure to locate specific torque specs or wiring paths without thumbing through fragile paper pages.

This factory-authorized workshop manual delivers unfiltered OEM data essential for servicing classic Jaguar drivetrains, chassis, and bodywork. Instead of hunting through physical archives, technicians get immediate access to precise engineering values to streamline daily operations. The document logically sections out everything from routine maintenance schedules to complete engine teardowns. You will find dedicated chapters breaking down fuel systems, twin SU carburetion, and complex Lucas electrical grids.

Accuracy is critical when turning wrenches on a vintage British motor. Always verify lifting points and employ proper supporting stands before initiating any heavy chassis or drivetrain work to ensure a safe shop environment. The technical data section explicitly outlines the 3,442 c.c. six-cylinder twin-cam output at 160 HP at 5,200 r.p.m. For head work, the manual specifies an intake valve clearance of 0.15 mm and details a multi-stage sequence for cylinder head bolt torque, maxing out at a final setting of 650 lb. ins. Bottom-end rebuilders will note the crankshaft end clearance at 0.10–0.15 mm, while the cooling system requires a 25.5-pint capacity. Whether you are documenting historical research or verifying clearances during a restoration repair process, this publication provides the definitive numerical foundation required for authentic Jaguar mechanical systems.