1989 Ford LT9000 Service and Repair Manual
This factory service and repair manual for the 1989 Ford LT9000 introduces the 10.5L six-cylinder diesel (638 cu in) alongside the turbocharged 10.0L inline-six (611 cu in), the turbocharged 14.6L inline-six (893 cu in) and the turbocharged 14.0L inline-six (855 cu in). The chassis list is back to the medium-conventional tractor truck and straight truck, both in Base trim. Four engines and two body styles keep the year's procedures, specifications, torque values, wiring diagrams and diagnostics focused, and the new 10.5L is the engine with no direct equivalent in the previous year's manual.
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
Body styles covered
- Tractor truck, medium conventional
- Straight truck, medium conventional
Trims covered
- Base
Known issues on the 1989 LT9000. One recall is on federal record for the 1989 LT9000, on the air brake system: the check valves on the secondary service reservoir may fail to seat properly because a circular brass guide interferes with the wall of its ferrule. No owner complaints are logged with NHTSA against this year. Air brake reservoirs and their check valves are exactly the kind of component the manual's procedures, specifications, torque values, wiring diagrams and diagnostics are meant for, along with the four diesels the truck was offered with.
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
