Pitman Shaft And Side Cover - GMC T Series 1994 Repair Manual

Assemble
m
• Lubricate new rings (27) and seals (26).
New seals (26) in the ring grooves.
New rings (27) in the grooves over the seals (26).
• Lubricate valve spool seal (29).
3. Seal (29) over the valve spool.
• Lubricate the valve spool and the valve
body (28).
4.
Valve spool into the flush end of the valve body (28)
(see Figure 21).
• Rotate the valve spool while pushing it
into the valve body. Push until the shaft
pin hole is visible from the opposite end
(see Figure 24).
• Lubricate the stub shaft (31) assembly.
5. Stub shaft (31) assembly into the valve spool
until the shaft pin can be placed into the valve spool
(see Figure 22).
• Align the notch in the shaft cap with the pin
in the valve body (28).
9
Important
Make sure that the shaft cap notch is mated
with the valve body pin before installing the
valve body into the gear assembly.
6. Valve spool and shaft (31) assembly into the valve
body (28). The shaft cap should be below the valve
body notch (see Figure 25).
• Lubricate a new shaft cap to the seal (32).
7. New shaft cap and seal (32) into the valve body (28)
assembly.

PITMAN SHAFT AND SIDE COVER

Figure 1
Inspect
•
b
Bearing in side cover (3). Needles should
rotate freely using finger pressure. Replace
bearing and side cover (3) if necessary.
Bearings' surface in the side cover (3) for
scoring. Replace side cover assembly if
necessary.
Sealing and bearing surfaces of the pitman
shaft (5) for roughness, nicks, or other damage.
Replace pitman shaft assembly if necessary.
Pitman shaft (5) for excessive wear or
scoring. Check sector gear teeth for wear.
Replace the pitman shaft assembly if
necessary.
Pitman shaft (5) adjuster screw threads for
wear. The adjuster screw must be free to turn
with no end play.
Figure 23 Stub Shaft Assembly