Jeep Wrangler 1997 Manual page 225

TJ
REMOVAL AND INSTALLATION (Continued)
(7)
Install pinion bearing preload shim(s) on pinion
gear (Fig. 40).
(8) Lightly lubricate inner and outer pinion bear-
ing cones with axle lubricant.
NOTE: Before installing pinion
proper differential side bead
requirement . Refer to Different!
and Gear backlash paragraph
section of this group.
ear, establish the
g preload shim
I Bearing Preload
the Adjustments
into We housing through
(9) Insert pinion gear
the pinion bearing cups .
(10) Install outer pinion bearing in axle
over pinion gear shaft (Fig . 40).
(11) Using screw, nut, and washer from Installer
W-162-D and a 3/4 in. drive 1'-5/16 in. deep well
socket as an adapter, push outer ' ; pinion bearing cone
onto pinion shaft (Fig. 44). Tighten installer nut to
122 N-m (90 ft. lbs.).
Fig. 44 Outer Pinion Bearing Install
housing
(12) Rotate pinion gear several times to lap in
bearings .
(13) Using a dial type (in. lbs.) torque wrench,
measure the preload resistance of the pinion bearings
(Fig . 45). Preload should not bel less than 2.25 N-m
(20 in . lbs.) and not exceed 4.5 N-m (40 in. lbs .). If
preload is out of specification, a ld or subtract shims
to achieve proper pre-------
(14) Remove screw from In
adapter. Assemble Installer W-1
(15) Install pinion slinger ove
(16) Apply a light coating Of multi-purpose on
inner seal surface of pinion sealj.
taller W-162-D and
2-D.
end of pinion shaft.
SPECIAL TOOL
W-162-D
(SCREW AND NUT)
TORQUE
WRENCH
10
u
Fig. 45 Measure Pinion Bearing Preload.
SPECIAL
TOOL
C-4171
D-163
SPECIAL TOOL
DIFFERENTIAL AND DRIVELINE
3 - 99
Fig. 46 Pinion Seal Installation
80a534ae
(17) Install seal with Installer D-163 and Handle
C-4171 (Fig. 46).
(18) Install yoke with Installer W-162-D and
holder 6958 (Fig . 47).
(19) Install yoke washer and a new nut on the pin-
ion gear.
(20) Using yoke holder 6958, a short length of 1 in.
pipe, and a 3/4 in. drive torque wrench, Tighten nut
to 234 N-m (180 ft. lbs.). (Fig . 48).
(21) Verify pinion bearing preload rotating torque (Fig .
49). If preload is within specifications, proceed with assem-
bly of axle components. If preload is not within specifica-
tions, add or subtract shims to achieve proper preload.
" Original Bearings - 1 to 3 Ym (10 to 20 in. lbs.).
" New Bearings - 2 to 5 N-m (15 to 35 in. lbs.).
NOTE: After installing pinion gear, establish the proper
differential (ring gear side) backlash shim requirement.
Refer to Differential Bearing Preload and Gear Backlash
paragraph in the Adjustments section of this group.