1985 Chevrolet C70 Service and Repair Manual
This factory service and repair manual for the 1985 Chevrolet C70 adds a low-tilt straight truck alongside the medium conventional straight truck and the two-door cab and chassis, so the cab and body material earns its place next to the engine material. Seven engines were offered: the 6.0L and 7.0L gasoline V8s, and five diesels running from the turbocharged 6.1L inline-six through turbocharged and naturally aspirated 8.2L and 10.4L V8s. Codes C7D042, C7D044 and C7D064 identify the chassis.
Engines covered
- 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
- 7.0L V8 (427 cu in) — naturally aspirated, gasoline
- 6.1L inline-six (374 cu in) — turbocharged, diesel
- 8.2L V8 (501 cu in) — turbocharged, diesel
- 10.4L V8 (636 cu in) — turbocharged, diesel
- 10.4L V8 (636 cu in) — naturally aspirated, diesel
- 8.2L V8 (501 cu in) — naturally aspirated, diesel
Body styles covered
- Straight truck, medium conventional
- 2-door cab & chassis, conventional
- Straight truck, low tilt
Trims covered
- C7D042
- C7D044
- C7D064
Known issues on the 1985 C70. The 1985 C70 has a clean federal record, with no recalls and no owner complaints. The manual is the practical reference for it, and its breadth follows the truck's: seven engines, each with its own specifications and torque values; three bodies, the low-tilt straight truck among them, with the cab and body procedures that go with them; and shared chassis coverage of the driveline, axles, brakes, steering and electrical systems, with diagnostic routines throughout.
STEERING CONTROL ARM CAN BE OVERSTRESSED WITH HEAVY STEERING INPUT CAUSING IT TO CRACK AND IT COULD EVENTUALLY BREAK COMPLETELY.
INSTALL NEW STEERING ARM AND OTHER STEERING SYSTEM HARDWARE WHICH WILL PREVENT OVERSTRES
THE POWER STEERING ASSIST CYLINDER MOUNTING BRACKET BOLTS MAY LOOSEN DUE TO PAINT ON THE BOLT THREADS AND THE MOUNTING BRACKET MATING SURFACE.
REMOVE PAINT FROM MATING SURFACES OF BRACKET AND FRAME RAIL; REPLACE POWER STEERING ASSIS
THE PARKING BRAKE ACTUATING LEVER CAM MAY CONTAIN A QUENCH CRACK WHICH CAN WIDEN, REDUCING THE HOLDING CAPABILITY OF THE PARKING BRAKES.
INSTALL A NEW ACTUATION LEVER.
