Rack Piston And Worm Shaft - Jeep cherokee 2000 Service Manual

19 - 16 STEERING
DISASSEMBLY AND ASSEMBLY (Continued)
Fig. 13 Valve Seals
1 – O-RING SEALS
Fig. 14 Stub Shaft Installation
1 – NOTCH IN CAP
2 – VALVE BODY PIN
(4) Install O-rings and teflon rings over the
O-rings on valve body.
(5) Install O-ring into the back of the stub shaft
cap (Fig. 15).
Fig. 15 Stub Shaft Cap O-Ring
1 – VALVE BODY
2 – STUB SHAFT CAP
3 – O-RING
(6) Install stub shaft and valve assembly in the
housing. Line up worm shaft to slots in the valve
assembly.
(7) Install thrust support assembly.
NOTE: The thrust support is serviced as an assem-
bly. If any component of the thrust support is dam-
aged the assembly must be replaced.
(8) Install adjuster nut and lock nut.
(9) Adjust Thrust Bearing Preload and Over-Cen-
ter Rotating Torque.

RACK PISTON AND WORM SHAFT

DISASSEMBLY
(1) Remove housing end plug.
(2) Remove rack piston plug (Fig. 16).
(3) Remove side cover and pitman shaft.
(4) Turn stub shaft COUNTERCLOCKWISE until
the rack piston begins to come out of the housing.
(5) Insert Arbor C-4175 into bore of rack piston
(Fig. 17) and hold tool tightly against worm shaft.
(6) Turn the stub shaft with a 12 point socket
COUNTERCLOCKWISE, this will force the rack pis-
ton onto the tool and hold the rack piston balls in
place.
(7) Remove the rack piston and tool together from
housing.
(8) Remove tool from rack piston.
(9) Remove rack piston balls.
(10) Remove clamp bolts, clamp and ball guide
(Fig. 18).
(11) Remove teflon ring and O-ring from the rack
piston (Fig. 19).
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