1966 GMC Truck Series 4000-6500 Service Manual

Year
1966
Make
GMC
Models
GMC Truck Series 4000 thru 6500, including L3500 (L, E, H, S, P series)
Publication
X-6733
Pages
507

Service manual X-6733 for 1966 GMC Truck Series 4000 thru 6500, including the L3500, published by GMC Truck & Coach Division. It gives on-the-vehicle maintenance, adjustment, light repair and unit replacement for conventional cab, tilt cab, forward control and cowl chassis with gasoline in-line, V6 and Toro-Flow diesel engines. A model data table lists engine, clutch, axle and transmission by series. Sections run from 0 Lubrication to 13 Radiator and Surge Tank, with service diagnosis charts and specifications at the end of most sections and a special tools list at the back. Major unit overhaul is covered in separate unit overhaul manuals, and driver operation in the owner's and driver's manual.

Section 0 · Pages 8–25 (18 pages)

Lubrication

Lubrication charts for conventional and steel tilt cab models, each with a numbered data table giving fitting counts, lubricant symbol and mileage interval. Covers capacities, engine oil recommendations and viscosities, oil filters, air cleaners, crankcase ventilation, multi-purpose gear lubricant, chassis lubricant, wheel bearing grease, brake fluid and other lubricants by symbol.

What this section covers

  • Lubrication charts and intervals
  • Capacities: crankcase, transmission, rear axle
  • Engine oil and viscosities
  • Air cleaners and crankcase breather
  • Multi-purpose gear lubricant (MP)
  • Chassis, wheel bearing and special greases