GMC 1976 ZEO 6083 Maintenance Manual page 196

4- 1 2 REAR SUSPENSION
Figure 25-Special Tool J-25265
SHOCK ABSORBER REMOVAL
Block control arms in an up position with a
wooden block about one inch in thickness as shown
in Figure 27 .
Remove nut at top of shock absorber as shown in
Figure 28, and remove shock from control arm.
Remove nut from bottom of shock and remove shock
from mounting bracket.
Figure 26-Spindle Removal
Figure 27-Positioning Wood Block Under Control
Arm
POWER LEVEL VALVE REMOVAL
1 . Bleed air from reservoir tank and place valve
in lower position .
2. Remove four screws on mounting panel.
3 . Remove control knobs by removing Allen
head screw in center of knobs (See figure 29).
4. Remove two screws holding each valve to
mounting panel .
5. Disconnect three fittings from the back of each
valve as shown in Figure 30 and remove valves .
Figure 28-Removing Shock Absorber Retaining Nuts