Chevrolet Light Duty Truck 1973 Service Manual page 18

0 -1 2 GENERAL IN F O R M A T IO N A N D LUBRIC ATIO N
Maintenance Schedule........................................................ 0-12
E ngine..................................................................................... 0-12
Oil and Filter Recommendations................................ 0-12
Drive Belts........................................................................... 0-13
Positive Crankcase V entilation..................................... 0-13
Air Injection Reactor System ....................................... 0-13
Controlled Combustion System .................................... 0-13
GM Evaporation Control System................................ 0-13
Manifold Heat Control V alve...................................... 0-13
Air Cleaner.......................................................................... 0-14
Fuel Filter............................................................................ 0-14
Distributor............................................................................ 0-14
G overnor.............................................................................. 0-14
Accelerator Linkage.......................................................... 0-14
Automatic Transmission Fluid Recommendations... 0-14
Manual Transmission......................................................... 0-14
Transmission Shift Linkage............................................ 0-14
Clutch...................................................................................... 0-14
Rear Axle
S tandard............................................................................... 0-15
Positraction.......................................................................... 0-15
Propeller Shaft Slip Joints.............................................. 0-15
Universal Joints................................................................... 0-15
MAINTENANCE SCHEDULE
A separate maintenance folder has been provided with
each car which contains a complete schedule and brief
explanation of the safety, emission control, lubrication
and general maintenance it requires. The maintenance
folder information is supplemented by this section of
this manual, as well as the separate emission control
systems folder also furnished with each car. Read all
three publications for a full understanding of vehicle
»> maintenance requirements.
The time or mileage intervals for lubrication and
maintenance services outlined in this section are
intended as a general guide for establishing regular
maintenance and lubrication periods. Sustained heavy
duty and high speed operation or operation under
adverse conditions may require more frequent servicing.
ENGINE
Oil & Filter Recommendations
The letter designation "SE" has been established to
correspond with the requirements of GM 6136-M. "SE"
engine oils will be better quality and perform better than
those identified with "SA" through "SD " designations
and are recommended for all light-duty gasoline trucks
regardless of model year and previous engine oil quality
recommendations.
Oil Change Period
• Use only SE engine oil.
• Change oil each 4 months or 6,000 miles. If more
LUBRICATION
INDEX
Wheel Bearings
Front....................................................................................... 0-15
R ear........................................................................................ 0-15
Brake Master Cylinder...................................................... 0-15
Brake and Clutch Pedal Springs................................... 0-15
Parking Brake....................................................................... 0-15
Steering
Manual Steering G ear..................................................... 0-15
Steering Linkage and Suspension................................ 0-16
Hood Latch and Hood H inge........................................ 0-16
Body Lubrication.................................................................. 0-16
Four Wheel Drive
Propeller Shaft Centering Ball..................................... 0-17
Front A xle........................................................................... 0-17
Air Vent H ose.................................................................... 0-17
Transfer Case...................................................................... 0-17
Control Lever and Linkage........................................... 0-17
Speedometer A dapter......................................................... 0-17
Lubrication Diagrams
Conventional and Forward Control Models............ 0-18
Four Wheel Drive M odels............................................. 0-19
1/2, 3/4 and 1 ton G Models..................................... 0-20
than 6,000 miles are driven in a 4-month period,
change oil each 6,000 miles.
• Change oil each 2 months or 3,000 miles, whichever
occurs first, under the following conditions:
—Driving in dusty conditions
—Trailer pulling or camper use.
—Frequent long runs at high speeds and high
ambient temperatures.
—Motor Home use.
—Stop and go type service such as delivery trucks,
etc.
—Extensive idling
—Short-trip operation at freezing temperatures
(engine not thoroughly warmed-up).
• Operation in dust storms may require an immediate
oil change.
• Replace the oil filter at the first oil change, and
every second oil change thereafter. AC oil filters
provide excellent engine protection.
The above recommendations apply to the first
change as well as subsequent oil changes. The oil
change interval for the engine is based on the use of
SE oils and quality oil filters. Oil change intervals
LIGHT DUTY TRUCK SERVICE MANUAL