1986 Ford LN8000 Service and Repair Manual
This factory service and repair manual for the 1986 Ford LN8000 is written for the short-conventional tractor and straight truck in a single Base trim, each available with the 10.4L V8 diesel (636 cu in) in turbocharged or naturally aspirated form. The manual supplies procedures, specifications, torque values, wiring diagrams and diagnostics for both engine versions and both chassis, with the turbocharger system on the boosted 10.4L covered as its own subject.
Engines covered
- 10.4L V8 (636 cu in) — turbocharged, diesel
- 10.4L V8 (636 cu in) — naturally aspirated, diesel
Body styles covered
- Tractor truck, short conventional
- Straight truck, short conventional
Trims covered
- Base
Known issues on the 1986 LN8000. Chassis rather than engine is where this one varies. Two configurations are covered, a short-conventional tractor and a straight truck, and they diverge in frame length, driveline, air-line routing and rear-axle service even though both take the 10.4L V8 diesel. That engine comes naturally aspirated or turbocharged, so charge-air and boost material applies to half the range and the rest of the engine content to all of it. The federal record carries no recall and no complaint.
