Description
This 500+ page, 1966 GMC Truck Service Manual Series 4000 – 6500 is a reproduction of the original, out of print manual. This manual provides detailed service information, step-by-step repair instruction and maintenance specifications for 1966 GMC Series 4000-6500, including L3500 trucks. This manual includes procedures for maintenance and adjustments, minor service operations and replacement of components.
Table of Contents
LUBRICATION
Lubrication Charts
Steel Tilt Cab Models
Engine and Accessories
Capacities
Crankcase
Transmission
Rear Axle
Engine Oil – Symbol “E”
Engine Oil Recommendations
Viscosities
Checking Engine Oil Level
Engine Oil Filter
Air Cleaners
Oil Bath Type
Paper Element Type
Brake Power and Axle Cylinder
Air Compressor Air Strainer
Other Engine Oil Uses
Crankcase Ventilation
Crankcase Breather
Multi-Purpose Gear Lubricant Symbol “MP”
Viscosities
Rear Axle
Transmission
Gear Oil – Symbol “GO”
Universal Joints
Chassis Lubricant – Symbol “C”
Steering Gear Lubricant – Symbol “SG”
High Temperature Grease – Symbol “S-2”
Wheel Bearings
Other High Temperature Uses
Petroleum Jelly – Symbol “S-3”
Distributor
Battery Terminals
Waterproof Grease – Symbol “S-4”
Refrigerant Machine Oil – Symbol “S-7”
Axle Shift Unit – Electric
Hydraulic Brake Fluid – Symbol “S-12”
Clutch and Brake Master Cylinder
Special Grease – Symbol “S-17”
Type A Fluid – Symbol “S-19”
Power Steering System
High Temperature Grease – Symbol “S-27”
Clutch Release Bearing
High Temperature Grease – Symbol “S-28”
Stopmaster Brake Unit
CABS AND BODY MOUNTINGS
General Maintenance
Conventional Model Cabs
Tilt Model Cabs
Body Mountings
Air Conditioning (Conventional Cab Models)
FRAME – This section includes instructions for checking frame alignment and recommendations for frame repair and reinforcement
FRONT SUSPENSION
Front End Alignment
Front Axle
Front Springs and Shock Absorbers
Front Hubs and Bearings
REAR SUSPENSION
Rear Axle and Controls
Rear Springs
Rear Hubs and Bearings
Propeller Shafts
BRAKES
Hydraulic Brakes
Air Brakes
Parking Brake
GASOLINE ENGINES
General Information
Engine Maintenance and Tune-up
Tune-up, Checks, and Adjustments
In-Line Engine Replacement and Service Operations
V-6 Engine Replacement and Service Operations
Trouble Diagnosis Chart (All Engines)
TORO-FLOW DIESEL ENGINES
ENGINE MOUNTINGS
ENGINE COOLING SYSTEM
ENGINE FUEL SYSTEM
AIR COMPRESSOR AND GOVERNOR
ENGINE ELECTRICAL
TRANSMISSIONS AND CLUTCHES
FUEL TANK & EXHAUST
STEERING SYSTEM
WHEELS & TIRES
SHEET METAL
CHASSIS ELECTRICAL AND INSTRUMENTS
RADIATOR AND SURGE TANK
SPECIAL TOOLS
