Chevrolet DB90 Series, Service Manual

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INTRODUCTION
Information in this Supplement, when used in conjunction with 1970
Heavy Duty Truck Manual ST135-70 and the 1971 Heavy Duty Truck Shop
Manual Supplement ST332-71 provided coverage for all 70 thru 90 Series
trucks listed on Model Data Chart on pages ii and iii.
The information in this Supplement is arranged in the same section
sequence as in 1970 Heavy Duty Truck Service Manual ST135-70.
IMPORTANT: Refer to the applicable section in this Supplement
(see Index below) to determine whether there is supplementary information
before servicing any unit or system on 70 thru 90 Series trucks.
SECTION INDEX
SECTION PAGE
0 Lubrication................................................................................... 1
1 Cab and Body Mountings............................................................ 13
2 F r a m e ............................................................................................ 21
3 Front Suspension.......................................................................... 23
4 Rear S u sp en sion .......................................................................... 33
5 B rakes............................................................................................ 45
6A Gasoline E ngines.......................................................................... 53
6C Detroit Diesel Engines (53 & 71 Series)................................... 61
6D Engine M ountings........................................................................ 81
6K Engine Cooling System ............................................................ 87
6M Engine Fuel System ..................................................................... 95
6T Air Compressor and Governor................................................... I l l
6Y Engine E lectrical.......................................................................... 113
7 Transmission and Clutches.......................................................... 151
8 Fuel Tank and E xh au st............................................................... 173
9 Steering System .......................................................................... 177
10 Wheels and T ir e s .......................................................................... 187
11 Sheet M eta l................................................................................... 207
12 Chassis Electrical and Instruments .......................................... 209
13 Radiator and Surge T ank............................................................ 229
Special T o o ls ................................................................................. 235
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL SUPPLEMENT