1991 Ford LA9000 Service and Repair Manual
This factory service and repair manual for the 1991 Ford LA9000 documents six diesel engines for a medium-conventional tractor or straight truck in Base trim. The 10.5L (638 cu in) and 10.3L (629 cu in) six-cylinders are joined by turbocharged inline-sixes at 10.0L (611 cu in), 14.6L (893 cu in) and 14.0L (855 cu in), and by the turbocharged, aftercooled 11.1L inline-six (677 cu in). Procedures, specifications, torque values, wiring diagrams and diagnostics are provided for all six engines and both chassis.
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
- 11.1L inline-six (677 cu in) — turbocharged, aftercooled, diesel
Body styles covered
- Tractor truck, medium conventional
- Straight truck, medium conventional
Trims covered
- Base
Known issues on the 1991 LA9000. NHTSA shows no recalls and no owner complaints for the 1991 LA9000, so the federal record is clean. The manual's procedures, specifications, torque values, wiring diagrams and diagnostics for the six diesels, including the aftercooled 11.1L inline-six, cover both the tractor and the straight truck and remain the reference in the absence of any flagged system.
