Jeep Cherokee 1999 Electronic Service Manual page 1299

19 - 18 STEERING
DI SASSEM BLY AN D ASSEM BLY (Cont inue d)
(7) Rem ove t h e r a ck pist on a n d t ool t oget h er fr om
h ou sin g.
(8) Rem ove t ool fr om r a ck pist on .
(9) Rem ove r a ck pist on ba lls.
(10) Rem ove cla m p bolt s, cla m p a n d ba ll gu ide
(F ig. 19).
(11) Rem ove t eflon r in g a n d O-r in g fr om t h e r a ck
pist on (F ig. 20).
Fig. 19 Rack Piston
Fig. 20 Rack Piston Teflon Ring and O-Ring
(12) Rem ove t h e a dju st er lock n u t a n d a dju st er
n u t fr om t h e st u b sh a ft .
(13) P u ll t h e st u b sh a ft wit h t h e spool va lve a n d
t h r u st su ppor t a ssem bly ou t of t h e h ou sin g.
(14) Rem ove t h e wor m sh a ft fr om t h e h ou sin g
(F ig. 21).
Fig. 21 Worm Shaft
ASSEMBL Y
NOTE: Clean and dry all components and lubricate
with power steering fluid.
(1) Ch eck for scor es, n icks or bu r r s on t h e r a ck
pist on fin ish ed su r fa ce. Sligh t wea r is n or m a l on t h e
wor m gea r su r fa ces.
(2) In st a ll O-r in g a n d t eflon r in g on t h e r a ck pis-
t on .
(3) In st a ll wor m sh a ft in t h e r a ck pist on a n d a lign
wor m sh a ft spir a l gr oove wit h r a ck pist on ba ll gu ide
h ole (F ig. 22).
Fig. 22 Installing Balls in Rack Piston
CAUTION: The rack piston balls must be installed
alternately into the rack piston and ball guide. This
maintains worm shaft preload. There are 12 black
balls and 12 silver (Chrome) balls. The black balls
are smaller than the silver balls.
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