Cleaning And Inspection - GMC 1989 Light Duty Truck Repair Manual

• Seal (239) and needle bea rin g (241). Use
J 8524-1 and J 7079-2 (figure
14. Valve (250) and w orm shaft (248) as an assembly, with
both races (246) and bearing (247).
• W ormshaft (248) from valve assembly (figure 9).
• Races (246) and bearing (247) from the worm ­
shaft (248).
• Seal (249).
15. Stub shaft (251) from valve body (250) (figure
• Hold the assem bly and lightly tap the stub shaft
against the bench until the shaft cap is free from
the valve body.
• Pull the shaft assembly until the shaft cap clears
the valve body by about 6 mm (1 /4-inch).
• Valve spool (252) and seals (230) and (231)
(figure 11 ).
16. Screws (210), clamp (211) and ball guide (
• Balls (213).

CLEANING AND INSPECTION

JTJj,
Clean
All parts with solvent and blow dry.
Inspect (Figure 1)
I?
1
. Pitman shaft and side cover.
— Bushing.
— Bushing surfaces in the side cover (225) for
scoring. Replace the side cover assembly if
necessary.
A. J-7079-2
B. J -8524-2
240. A d ju s te r Plug
Figure 8 — R em oving th e N eedle Bearing
8 ).
1
0).
Figure 9 — Separating the W ormshaft from the Valve
212
).
A. D ise n g a g e S tu b S h a ft Pin
Figure 10— Removing or Installing the Stub Shaft
B-06502
POWER STEERING 3B3-5
Assembly
F rom H o le in S p o o l Valve
Assembly
Figure 11 — R em ove o r Install V alve Spool
B-06509