Pitman Shaft And Side Cover; Rack Piston And Wormshaft - Jeep 1979 CJ-5 Technical & Service Manual

2L-30 POWER STEERING GEAR AND S W P
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NOTCH MUST INDEX WITH
PIN I N V A L V E BODY
Fig. 2L-32 Stub Shaft Installation
CAUTION: Do not allow the stub shaft to disengage
from the valve body pin. If disengagement occurs, the
spool valve will extend too far into the valve body, allow
the damper O-ring to expand into the valve body grooves
and prevent valve withdrawal. If disengagement occurs,
attempt to remove the valve using a pull and turn mo-
tion. If this fails, proceed as follows: First be sure the
spool valve is free to rotate, then place the valve body on
a flat surface with the notched end of the valve body
facing upward. Tap the spool valve with a wood or plas-
tic rod until the damper O-ring is cut and remove the
valve. Replace the damper O-ring and reassemble the
valve body. Be sure all pieces of the cut O-ring are
removed before assembly.
Pitman Shaft and Side Cover
Cleaning and Inspection
Clean the shaft and cover with solvent and wipe them
dry with lint free cloths.
Inspect the side cover bearing and mating surfaces for
wear, distortion, scoring, or distortion. Replace the
cover if it exhibits any of these conditions.
Inspect the pitman shaft bearing and seal surfaces
and sector teeth for cracks, wear, pitting, or scoring (fig.
2L-33). Inspect the adjuster screw for looseness, dam-
aged threads, or distortion. Replace the pitman shaft if
any of these conditions are noted. However, light scor-
ing, corrosion, or scratches on the shaft surfaces may be
removed using crocus cloth.
ADJUSTER SCREW
Fig. 2L-33 Pitman Shaft Inspection
Inspect the pitman shaft nut threads and master
spline for damage (fig. 2L-33). If either of these surfaces
are damaged, replace the shaft.
Rack Piston and l o n s h a f t
Disassembly
(1) Remove wormshaft, lower thrust bearing, and
bearing races from rack piston.
(2) Cut and remove seal ring and backup O-ring
from rack piston. Discard seal ring and O-ring.
(3) Remove ball return guide clamp attaching
screws and remove return guide clamp.
(4) Place rack piston on clean cloth and remove two-
piece ball return guide, arbor tool, and ball bearings.
Cleaning and Inspection
Clean all components with solvent and dry them using
filtered compressed air.
Inspect the wormshaft for wear, scoring, pitting, dis-
tortion, nicked threads, or cracks. Replace the worm-
shaft if it exhibits any of these conditions. Inspect the
rack piston for scored, pitted, or nicked ball bearing
grooves. Replace the wormshaft and rack piston as an
assembly if either part is damaged.