1990 Ford LTL9000 Service and Repair Manual
This factory service and repair manual for the 1990 Ford LTL9000 covers four diesels in the long-conventional straight truck and the long-conventional tractor truck, Base trim only. The 10.3L six-cylinder (629 cu in) is the new engine, joining the turbocharged 10.0L (611 cu in), 14.0L (855 cu in) and 14.6L (893 cu in) inline-sixes. Since the chassis list is unchanged from the year before, the 10.3L and its own procedures, specifications, torque values, wiring diagrams and diagnostics are what distinguish the 1990 manual, next to the sections for the three turbocharged engines it shares the frame with.
Engines covered
- 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
- Straight truck, long conventional
- Tractor truck, long conventional
Trims covered
- Base
Known issues on the 1990 LTL9000. The federal record for the 1990 LTL9000 shows one recall and no owner complaints. The recall targets the air brakes, where the secondary service reservoir's air check valves may not seat properly due to interference between a brass guide and the ferrule wall. NHTSA has no complaints logged from owners. The manual's procedures, specifications, torque values, wiring diagrams and diagnostics cover the air system alongside the 10.3L six-cylinder and the three turbocharged inline-sixes in both long-conventional chassis.
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
