1990 Ford LA9000 Service and Repair Manual
This factory service and repair manual for the 1990 Ford LA9000 covers three body configurations, the medium-conventional tractor, the long-conventional straight truck and the long-conventional tractor, all in Base trim. Five diesels are listed: six-cylinders at 10.5L (638 cu in) and 10.3L (629 cu in), and turbocharged inline-sixes at 10.0L (611 cu in), 14.0L (855 cu in) and 14.6L (893 cu in). The manual supplies procedures, specifications, torque values, wiring diagrams and diagnostics for every engine and each of the three chassis layouts.
Engines covered
- 10.5L six-cylinder (638 cu in) — diesel
- 10.0L inline-six (611 cu in) — turbocharged, diesel
- 14.0L inline-six (855 cu in) — turbocharged, diesel
- 14.6L inline-six (893 cu in) — turbocharged, diesel
- 10.3L six-cylinder (629 cu in) — diesel
Body styles covered
- Tractor truck, medium conventional
- Straight truck, long conventional
- Tractor truck, long conventional
Trims covered
- Base
Known issues on the 1990 LA9000. The 1990 LA9000 has one recall on federal record: secondary service reservoir air check valves that may not seat because of mechanical interference between a brass guide and a cylindrical ferrule. NHTSA logs no owner complaints for this model year of the LA9000. That makes the air brake supply circuit the single documented concern, and the manual's procedures, specifications and diagnostics for the air system, with torque values for its fittings, cover it across all three body styles.
SECONDARY SERVICE RESERVOIR AIR CHECK VALVES MAY NOT SEAT PROPERLY DUE TO A MECHANICAL INTERFERENCE CONDITION BETWEEN A CIRCULAR BRASS GUIDE AND THE WALL OF A CYLINDRICAL FERRULE I
