Rack-Piston; Installing Rack Piston Nut; Installing End Plug Retainer Ring - Pontiac Grand Prix Service Manual

STEERING 9-41
adjustment plus drag should not exceed 7.0 Ib. in.
torque with gears. from Pontiac Catalina without air
conditioning and all Tempest and Firebird models or
8.0 lb. in torque on all Pontiac and Grand Prix models
except Pontiac Catalina models without air condition-
ing.
RACK-PISTON
INSTALL
1. Slip stub shaft flexible coupling onto end of stub
shaft.
2. Holding teflon ring compressor sleeve tool
J 8947 or
J 7576 tightly against the shoulder of gear housing,
insert the rack-piston nut and arbor into housing holding
the arbor (tool J 7539) until arbor contacts worm end.
Use tool J 8947 on Pontiac Catalina models without
air conditioning and all Tempest and Firebird models
or tool J 7576 on all Pontiac and Grand Prix models
except Pontiac Catalina models without air conditioning
(Fig. 9-77).
CA UTION: Be certain that no balls drop out.
3. Remove arbor and sleeve.
PITMAN SHAFT GEAR AND SIDE COVER
INSTALL
1. Turn worm shaft until center groove of rack-piston
is aligned with center of pitman shaft needle bearing.
2. Install new side cover O-ring seal.
3. Install pitman shaft gear so that center tooth of gear
meshes with center groove of rack-piston. Make sure
that side cover O-ring seal is in place before pushing
cover against housing.
4. Install side cover screws and tighten to 30 lb. ft.
torque.
R O T A R Y V A L V E A S S E M B L Y
TORSION B A R
CAP
T O WORM 0 R I N G
STEERING WORM
T H R U S T BEARING RACb
Fig. 9-77 lnstalling Rack Piston Nut
5. Install end plug in rack-piston nut, using 1/2"
square drive. Tighten to 75 Ib. ft. torque.
HOUSING LOWER END PLUG
INSTALL
1. Install new housing end plug O-ring seal.
2. Insert end plug into g b r housing and seat against
O-ring seal. Slight pressure may be necessary to seat
end plug properly.
3. Install end plug retainer ring so end of ring extends
over 112'' beyond ring removal assist hold (Fig. 9-69).
OVERCENTER OR PITMAN SHAFT ADJUST-
MENT
NOTE: DO NOT use a torque wrench having maximum
torque reading of more than 100 lb. in. When taking
Fig. 9-76 Exploded View of Worm Shaft and Rotary
Valve Fig.
9-78 Installing End Plug Retainer Ring