1991-1995 Ford 5640, 6640, 7740, 7840, 8240, 8340 & New Holland S90, S100 Tractor Service Manual

Technical Scope and Coverage for the Ford/New Holland 40 & S Series

• Covers the 1991–1995 Ford 5640, 6640, 7740, 7840, 8240, 8340 and New Holland S90, S100 tractor range, including naturally aspirated and turbocharged engine configurations.
• Official New Holland publication P/N SE 4840-8, dated January 1992.
• Contains 72 technical diagrams and 5 detailed torque and capacity reference tables for the 4-cylinder and 6-cylinder engine variants.
• This 1492-page document is delivered as a direct download the moment payment clears.
• Suitable for printing individual sections for shop-floor use.
• Stored against your account so you can retrieve it after a hard-drive loss.
• This 1992 edition is the primary factory reference for the Series 40 and Series S tractors, documenting engine overhaul, transmission calibration, and hydraulic system diagnostics unique to the 16x16 and 12x12 gearsets.

Engine and Fuel System Documentation

The 1991–1995 Ford 5640, 6640, 7740, 7840, 8240, 8340 and New Holland S90, S100 service manual provides extensive details on the overhaul and pressure testing of direct injection diesel engines. The documentation spans 12 parts, covering topics from cylinder head assemblies and crankshaft-driven dynamic balancers to the independent power take-off systems. Separate chapters address transmission variants, including the 16x16 'Quad Mod' transmission and 8x2 dual power assembly, alongside hydrostatic steering systems and electronic draft control components.

Fuel system information is focused on the DPS distributor-type injection pumps, highlighting priming procedures and throttle linkage adjustments for hand and foot controls. The content includes a dedicated walkthrough of the dry and wet air cleaner systems, with specific maintenance requirements based on dust exposure levels and filtration types.

Specification Highlights

Technical data is segmented by component, featuring precise clearance and torque values across the engine and fuel subsystems. Valve lash settings for the 1991–1995 Ford 5640, 6640, 7740, 7840, 8240, 8340 and New Holland S90, S100 range are specified at 0.014–0.018 inches for intake and 0.017–0.021 inches for exhaust. Intake valve seat width is documented at 0.078–0.098 inches in the specification table. Engine oil capacity for the 6-cylinder model with filter is documented at 22.0 liters. All service data is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. You can also review what an OEM service publication covers to understand the technical depth provided in this factory manual.

This is an official 1492-page New Holland OEM workshop manual covering the 1991–1995 Ford and New Holland 40 & S Series tractors, documenting engine, chassis, electrical, and fuel-injection specifications for the 4-cylinder and 6-cylinder builds.