Jeep Cherokee 1999 Electronic Service Manual page 1282

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POWER STEERING . . . . . . . . . . . . . . . . . . . . . . . . 1
POWER STEERING PUMP . . . . . . . . . . . . . . . . . . 5
POWER STEERING GEAR . . . . . . . . . . . . . . . . . . 11
GENERAL INFORMATION
STEERING SYSTEM . . . . . . . . . . . . . . . . . . . . . . 1
GEN ERAL I N FORM AT I ON
STEERING SYSTEM
Th e power st eer in g syst em h a s a h ydr a u lic pu m p.
Th e pu m p is a con st a n t flow r a t e a n d displa cem en t ,
va n e-t ype pu m p. Th e pu m p on t h e 4.0L en gin e h a s a
r eser voir m ou n t ed t o it (F ig. 1). Th e 2.5L en gin e h a s
a r em ot e m ou n t ed r eser voir.
Th e st eer in g gea r u sed is a r ecir cu la t in g ba ll t ype
gea r. Th e gea r a ct s a s a r ollin g t h r ea d bet ween t h e
wor m sh a ft a n d t h e r a ck pist on . Wh en t h e st eer in g
wh eel is t u r n ed t h e wor m sh a ft t u r n s wh ich m oves
t h e r a ck pist on . Th e r a ck pist on m ovem en t t u r n s t h e
pit m a n sh a ft wh ich is con n ect ed t o t h e st eer in g lin k-
a ge by t h e pit m a n a r m . Th is gea r is u sed on a ll m od-
els.
Th e power st eer in g syst em con sist s of:
• H ydr a u lic pu m p
• Recir cu la t in g ba ll st eer in g gea r
• St eer in g colu m n
• St eer in g lin ka ge
STEERING
CON T EN T S
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STEERING LINKAGE . . . . . . . . . . . . . . . . . . . . . . 23
STEERING COLUMN . . . . . . . . . . . . . . . . . . . . . . 27
POWER ST EERI N G
INDEX
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DIAGNOSIS AND TESTING
POWER STEERING SYSTEM
DIAGNOSIS CHARTS . . . . . . . . . . . . . . . . . . . . 2
Fig. 1 Power Steering Gear & Pump - 4.0L
NOTE: Right hand drive (RHD) and left hand drive
(LHD) service procedures and torque specifications
for steering linkage, gear and column are the same.
The power steering pump procedures are different.
Refer to appropriate service procedures regarding
each component in the system.
STEERING 19 - 1
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