Chevrolet 1977 light duty truck Service Manual page 21

COMPLETE VEHICLE MAINTENAHCE SCHEDULE
Heavy Duty Emission System
When To P erfo rm S e r v ic e s
(Months or Miles, Whichever Occurs First)
Every 4 months or 6,000 miles
Every 6,000 miles
At 1 st oil change-then every 2nd
Every 12,000 miles
Every 12 months or 12,000 miles
Every 24,000 miles
Every 36,000 miles
Every 4 months or 6,000 miles
Every 6,000 miles
Every 12 months or 12,000 miles
At 1st 4 months or 6,000 miles —
then at 12 month/12,000 mile
intervals
Every 12 months or 12,000 miles
Every 12,000 miles
Every 12 months or 12,000 miles
Every 24 months or
24,000 miles
Every 12,000 miles
Every 12 months or 12,000 miles
*Also an Emission Control Service
**On 4-Wheel Drive Vehicles, lubricate wheel bearings every 12,000 miles.
(1) All except California 350 CID & 400 CID engines which receive this service at 24 months
or 24,000 miles.
(2) All except California 350 CID & 400 CID engines which receive this service at 24,000 miles.
Item
S e r v ic e s
No.
(For Details, See Numbered Paragraghs)
1
Chassis Lubrication
2 •Fluid Levels
3 *Engine Oil
4 Air Conditioning System
5 Tire Rotation
6
*Engine Oil Filter
7
Rear Axle
8 Cooling System
9 Wheel Bearings**
10
Automatic Transmission
11 Manual Steering Gear
12 Owner Safety Checks
13 Tires and Wheels
14 Exhaust System
15 *Engine Drive Belts
16 Suspension and Steering
17 Brakes and Power Steering
18 Disc Brakes
19
Drum Brakes and Parking Brake
20 Throttle Linkage
21 Underbody
22 Carburetor Choke and Hoses (1)
23 Engine Idle Speed Adjustment (1)
24 Carburetor Mounting (1)
25 Thermostatically Controlled Air Cleaner (1)
26 Manifold Heat Valve (1)
27 Spark Plugs (2)
28 Engine Timing Adjust. & Distributor Check (2)
29 EGR System
30 Carburetor Fuel Inlet Filter (1)
31 Engine Idle Mixture (1)
32 Throttle Return Control (1)
33 Idle Stop Solenoid
34 PCV System
35 ECS System
36 Fuel Cap, Tank and Lines
37 Air Cleaner Element (2)
38 Spark Plug and Ignition Coil Wires (1)
*Also a Safety Service