Forklift Service Manual – Mitsubishi Forklift Trucks

Inside the Mitsubishi S6S Diesel Engine Service Manual

• Covers Mitsubishi FD35–FD50 and FD60–FD70 series forklifts powered by the S6S diesel engine, including technical integration for both dry and wet clutch configurations
• Official Mitsubishi publication P/N 99709-56110, documenting factory maintenance and service specifications for the complete S6S engine build
• Contains 56 individual exploded-view diagrams, 27 system-specific tolerance tables, and 19 detailed torque-specification charts for engine assembly and teardown
• Stored against your account so you can retrieve it after a hard-drive loss
• Full-text search finds any part number in seconds
• Suitable for printing individual sections for shop-floor use
• This 100-page service manual serves as the primary factory reference for timing gear settings, governor adjustments, and critical assembly clearances required for the S6S diesel power unit

Engine System Documentation

The Mitsubishi FD35–FD70 diesel engine manual provides technical details for complete engine overhauls and sub-assembly maintenance. Coverage includes internal components such as cylinder heads, pistons, connecting rods, crankshafts, and tappets. The document details the inspection of the lubrication system, including oil pump and oil pressure relief valve tolerances, along with cooling system specifications for the thermostat and centrifugal water pump. Fuel system maintenance is documented through sections on the injection pump, fuel filter, and nozzle calibration.

Precision Values and Technical Data

Assembly and Maintenance Specs

Cylinder head bolt torque is documented at 118 ± 5 Nm (87 ± 4 lbf-ft) in the standard maintenance table. The intake valve opens at 30° B.T.D.C. as listed in the valve timing specification chart. Flywheel bolt torque is specified at 83 ± 5 Nm (61 ± 4 lbf-ft) for standard installation. For more details on assembly, see what an OEM service publication covers to properly evaluate engine wear. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This 100-page Mitsubishi service manual for the S6S diesel engine covers assembly, overhaul instructions, and testing parameters for the FD35–FD70 series fleet, providing essential data for engine maintenance and mechanical tuning.