Jeep Cherokee 2000 Service Manual - page 127
(11) Rotate case with Turning Bar C-6960-2 until
the pinion mate shaft holes in pinion gears align
with holes in case. It may be necessary to slightly
tighten the forcing screw in order to install the pin-
ion gears.
(12) Tighten forcing screw to 122 N·m (90 ft. lbs.)
maximum to compress the Belleville springs.
(13) Lubricate and install thrust washers behind
pinion gears and align washers with a small screw
driver. Insert mate shaft into each pinion gear to ver-
ify alignment.
(14) Remove Forcing Screw C-6960-4, Step Plate
C-6960-3, and Threaded Adapter C-6960-1.
(15) Install pinion gear mate shaft and align holes
in shaft and case.
(16) Install the pinion mate shaft lock screw finger
tight to hold shaft during differential installation.
If replacement gears and thrust washers were
installed, it is not necessary to measure the
gear backlash. Correct fit is due to close
machining tolerances during manufacture.
(17) Lubricate all differential components with
hypoid gear lubricant.
CLEANING AND INSPECTION
AXLE COMPONENTS
Wash differential components with cleaning solvent
and dry with compressed air. Do not steam clean
the differential components.
Wash bearings with solvent and towel dry, or dry
with compressed air. DO NOT spin bearings with
compressed
air.
Cup
and
bearing
must
be
replaced as matched sets only.
Clean axle shaft tubes and oil channels in housing.
Inspect for;
• Smooth appearance with no broken/dented sur-
faces on the bearing rollers or the roller contact sur-
faces.
• Bearing cups must not be distorted or cracked.
• Machined surfaces should be smooth and with-
out any raised edges.
• Raised metal on shoulders of cup bores should
be removed with a hand stone.
• Wear and damage to pinion gear mate shaft,
pinion gears, side gears and thrust washers. Replace
as a matched set only.
• Ring and pinion gear for worn and chipped
teeth.
• Ring gear for damaged bolt threads. Replaced as
a matched set only.
• Pinion yoke for cracks, worn splines, pitted
areas, and a rough/corroded seal contact surface.
Repair or replace as necessary.
• Preload shims for damage and distortion. Install
new shims, if necessary.
TRAC-LOK
Y
Clean all components in cleaning solvent. Dry com-
ponents with compressed air. Inspect clutch pack
plates for wear, scoring or damage. Replace both
clutch packs if any one component in either pack is
damaged. Inspect side gears and pinions. Replace
any gear that is worn, cracked, chipped or damaged.
Inspect differential case and pinion shaft. Replace if
worn or damaged.
PRESOAK PLATES AND DISC
Plates and discs with fiber coating (no grooves or
lines) must be presoaked in Friction Modifier before
assembly. Soak plates and discs for a minimum of 20
minutes.
ADJUSTMENTS
PINION GEAR DEPTH
GENERAL INFORMATION
Ring and pinion gears are supplied as matched
sets only. The identifying numbers for the ring and
pinion gear are etched into the face of each gear (Fig.
64). A plus (+) number, minus (–) number or zero (0)
is etched into the face of the pinion gear. This num-
ber is the amount (in thousandths of an inch) the
depth varies from the standard depth setting of a
pinion etched with a (0). The standard setting from
the center line of the ring gear to the back face of the
pinion is 96.850 mm (3.813 in.). The standard depth
provides the best teeth contact pattern. Refer to
Backlash and Contact Pattern Analysis Paragraph in
this section for additional information.
Fig. 64 Pinion Gear ID Numbers
1 – PRODUCTION NUMBERS
2 – DRIVE PINION GEAR DEPTH VARIANCE
3 – GEAR MATCHING NUMBER (SAME AS RING GEAR
NUMBER)
XJ
194 RBI AXLE
3 - 91
DISASSEMBLY AND ASSEMBLY (Continued)