1991 Ford LN9000 Service and Repair Manual
This factory service and repair manual for the 1991 Ford LN9000 is for a short-conventional tractor truck or straight truck in Base trim, powered by one of five diesels. The 10.5L six-cylinder (638 cu in) and the 10.3L six-cylinder (629 cu in) are listed without turbocharging; the 10.0L (611 cu in), 14.6L (893 cu in) and 14.0L (855 cu in) inline-sixes are turbocharged. Between the smallest and the largest of these engines there is a wide spread of displacement, and the specifications and torque values in the manual reflect it engine by engine.
Engines covered
- 10.5L six-cylinder (638 cu in) — diesel
- 10.0L inline-six (611 cu in) — turbocharged, diesel
- 14.6L inline-six (893 cu in) — turbocharged, diesel
- 14.0L inline-six (855 cu in) — turbocharged, diesel
- 10.3L six-cylinder (629 cu in) — diesel
Body styles covered
- Tractor truck, short conventional
- Straight truck, short conventional
Trims covered
- Base
Known issues on the 1991 LN9000. No recalls and no owner complaints are recorded by NHTSA for the 1991 LN9000, so the federal record is clean. That leaves the manual's procedures, specifications, torque values, wiring diagrams and diagnostics to serve the 10.5L and 10.3L six-cylinder diesels, the turbocharged 10.0L, 14.6L and 14.0L inline-sixes and the two short-conventional chassis types on their own merits.
