Chevrolet 70 1969 Series, Shop Manual

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STEERING SYSTEM 9B-26
1 Rotor Slipper
2 Flow Control Valve
3 O-Ring Seal
4 Snap Ring
5 Control Valve Plug
6 Pump Body
7 Metering Insert
8 Control Valve Spring
9 Relief Valve Assembly
10 Rotor
11 Slipper Spring
12 Reservoir
Figure 9— S Upper Type Hydraulic Pump
IM P O R T A N T : Before checking fluid
level, start the engine and turn steer­
ing wheel to the left and right several
times to expel air from system, then
shut off the engine.
PUMP R E P L A C E M E N T
Removal
1. Loosen two cap screws which attach pump
mounting bracket to engine; then move pump in­
ward and remove drive belt.
2. Disconnect hoses at pump. When hoses are
disconnected, secure ends in raised position to
prevent drainage of oil. Install caps at pump fit­
tings to prevent loss of fluid from pump.
3. Remove two cap screws and lock washers
which attach pump and mounting bracket to engine.
Installation
1. Position pump and mounting bracket on en­
gine and attach with two cap screws and lock
washers.
2. Install drive belt and adjust as previously
described under "Belt Tension."
3. Connect and tighten hose fittings.
4. Fill pump reservoir with fluid recommend­
ed in L U B R IC A T ION (SEC. 0).
5. Start engine and run for several minutes at
idle speed. Turn wheels from right to left several
times to expel all air from system. Recheck fluid
level in reservoir and fill to proper level.
Refer to next page for Hydraulic Pump Troubleshooting Procedures.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L