Leak Diagnosis And Correction - Pump - Jeep 1979 CJ-5 Technical & Service Manual

mwm STEERING 1EI1 INI PUMP
21-11
Leak Diagnosis and Correction—Steering Gear
N O T E : Refer to figures 2L-6 and 2L-7 for an illustra-
tion of steering gear leak sources.
(1) If leak occurs from hose or hose fittings, replace
hose. If leak continues to occur at gear housing pressure
or return port and hose has been replaced, replace hose
connector seats in gear housing.
(2) If leak occurs between adjuster plug and hous-
ing, replace adjuster plug O-ring.
(3) If leak occurs between stub shaft and stub shaft
seal in adjuster plug, replace seal.
(4) If leak occurs from steering gear housing ball
• plug, reset plug in housing and stake housing around
ball. If leak persists after staking ball, replace housing.
(5) If leak occurs between torsion bar and torsion
bar seal, replace entire valve body assembly.
(6) If leak occurs at side cover gasket or locknut,
' replace gasket or locknut as necessary.
(7) If leak occurs between pitman shaft and shaft
seal, replace seal and check shaft for nicks, scores,
burrs, or pitting. Remove minor surface imperfections
using'crocus cloth. Replace shaft if severely damaged.
RESERVOIR
(8) If leak occurs between end plug and housing,
replace end plug O-ring seal
(9) If leak is from crack or porous spot in gear
housing, replace housing.
Leak Diagnosis i l l Cgrraellon—-Pump
NOTE: Refer to figure 2L-8 for an illustration of the
various pump leak sources.
(1) If leak occurred between pump union fitting and
hose fitting, replace union and hose.
(2) If leak occurred between pump union fitting and •
pump body, replace pump union fitting O-rings.
(3) If leak occurred between .reservoir and pump
body, replace reservoir O-ring seal.
(4) If leak occurred between pump shaft and pump
shaft seal, replace seal and check pump shaft for nicks,
scores, burrs, or pitting.
(5) If leak is result of overfill condition, drain fluid
from reservoir to correct level
(6) If fluid is aerated, check for overfill condition, or
air entering fluid through loose hose connection or reser-
voir O-ring seal, or perform hydraulic pressure test to
check for sticking flow control valve.
(7) If leak occurs from cracked or porous pump
body or reservoir, replace pump as assembly.
RESERVOIR CAP
RESERVOIR
" O " RING
PUMP SHAFT
SEAL
F I T T I N G " O " RING A N D
STUD/BOLT " O " RINGS
RETURN HOSE A N D CLAMPS
ADJUSTER PLUG
" O " RING
TORSION BAR
" O " RING
STUB S H A F T
SEAL
HOUSING
B A L L PLUG
P I T M A N S H A F T
S E A L
PRESSURE PORT
PRESSURE A N D R E T U R N PORT SEATS
A D J U S T I N G SCREW LOCK N U T
END COVER " O " RING
GEAR
HOUSING
SIDE COVER GASKET
Fig.
214 Power
Steering System Lull Points
8 0 0 7 6