Chevrolet 70 1969 Series, Shop Manual

Page: 369 / 913

AIR COMPRESSORS AND GOVERNORS 6T-8
11
1 Adjuster Plug
7 Housing
2 Lock Nut 8 Valve Assembly
3 Spring 9 Governor Body
4 Spring Guide 10 Filter
5 Housing Lock Nut 11 End Cap
6 Housing O-ring
1 - 1 8 2 2
Figure 9 — Compressor Governor (M-R)
2. Disconnect both ends of tube from gover­
nor to unloader.
3. Remove nuts and/or bolts which fasten
governor to compressor or bracket.
4. Remove governor.
IN S T A L L A T IO N
1. Place governor in position on compressor
or bracket.
2. Install nuts and/or bolts which fasten
governor.
3. Connect both ends of tube to governor and
unloader.
4. Build up pressure in system and check for
operation and leaks.
TROUBLESHOOTING
C O M P R E S S O R FA ILS T O M A IN T A IN
S U F F IC IE N T P R E S S U R E
Dirty intake strainer.
Restriction in compressor cylinder head in­
take or discharge cavities or in dis­
charge line.
Leaking or broken discharge valves.
Excessive wear.
Drive belt slipping.
Inlet valves stuck open.
Worn inlet valves.
Excessive system leakage or usage.
1 Rubber Cover
2 Cover Retaining Ring
3 Lock Nut
4 Upper Spring Seat
5 Adjuster Screw Spring
6 Lower Spring Seat
7 Spring Guide
8 Lower Spring Seat
9 Adjuster Screw
10 Piston Grommet
11 Exhaust Stem
12 Exhaust Stem Spring
13 Washer
14 Exhaust Stem Grommet
15 Piston
16 Valve
17 Valve Spring
18 Piston Grommet
19 Governor Body
t p m
9 3 <
Figure JO—Compressor Governor (B-W )
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L