1990 Ford LL9000 Service and Repair Manual
This factory service and repair manual for the 1990 Ford LL9000 is written for a straight truck built in long-conventional and medium-conventional form, in Base trim only, with a choice of three turbocharged inline-six diesels: 10.0L (611 cu in), 14.0L (855 cu in) and 14.6L (893 cu in). The manual's procedures, specifications, torque values, wiring diagrams and diagnostics cover all three engines and both chassis lengths, so a shop can follow the same reference for either version.
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
Body styles covered
- Straight truck, long conventional
- Straight truck, medium conventional
Trims covered
- Base
Known issues on the 1990 LL9000. Federal records show one recall for the 1990 LL9000, on secondary service reservoir air check valves that may fail to seat because of interference between a brass guide and the wall of a cylindrical ferrule. No owner complaints are logged with NHTSA for the 1990 LL9000. With the air brake supply circuit the only documented concern, the manual's procedures, specifications, torque values and diagnostics for the air system are the section to turn to, alongside its coverage of the three turbocharged inline-sixes.
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
