1988 Ford LN7000 Service and Repair Manual
This factory service and repair manual for the 1988 Ford LN7000 covers two turbocharged inline-six diesels, the 7.8L (473 cu in) and the 6.6L (401 cu in), in a short-conventional tractor or straight truck with a single Base trim. The two engines share a layout but not their specifications, so the manual's procedures, specifications and torque values are given for each, with wiring diagrams and diagnostics that cover the tractor and straight-truck chassis.
Engines covered
- 7.8L inline-six (473 cu in) — turbocharged, diesel
- 6.6L inline-six (401 cu in) — turbocharged, diesel
Body styles covered
- Tractor truck, short conventional
- Straight truck, short conventional
Trims covered
- Base
Known issues on the 1988 LN7000. Turbocharged inline-sixes have replaced the V8s of earlier LN7000 years, a 7.8L and a smaller 6.6L, which means every engine in the range is boosted and that charge-air, wastegate and injection-pump material applies across the whole lineup rather than to one variant. Coverage spans a short-conventional tractor and a straight truck. Nothing has been recorded federally against the year, no recall and no complaint, so those two engines and the two chassis are the substance.
