Jeep J-10 Series 1982 Technical & Service Manual page 772

2F-36 AXLES - FRONT HUBS
CAUTION: To avoid false readings, do not allow the
anvil to contact the pinion gear at any point.
(18) Assemble Bolt J-5223-29 and Clamp J-5223-24
and mount tools on axle housing (fig. 2F-54). Use hous
ing cover bolt to attach clamp to housing.
(19) Extend clamp bolt until it presses against gauge
block. Align gauge block plunger with center of gauge
arbor and tighten clamp bolt until it presses against
block with enough force to prevent block from moving.
(20) Loosen gauge block thumbscrew and release
plunger. When plunger contacts arbor tool, tighten
thumbscrew to lock plunger in position. Do not disturb
plunger position.
(21) Remove clamp and bolt from axle housing.
(22) Remove gauge block and measure distance from
end of anvil to end of plunger using 3-inch (7.62 cm)
micrometer (fig. 2F-55). This dimension represents
measured pinion depth. Record this dimemsion for as
sembly reference.
NOTE: If the measured pinion depth equals the desired
pinion depth, the installed shim thickness is correct and
further adjustment is not required.
(23) Remove bearing caps and remove arbor tool and
discs.
(24) Remove pinion gear, rear bearing cup, and depth
shim from axle housing.
(25) Measure thickness of depth shim just removed
from housing and add this dimension to measured pin
ion depth obtained in previous step. From this total,
subtract desired pinion depth. Result represents shim
thickness required to adjust pinion depth.
NOTE: The desired pinion depth is the standard set
ting plus or minus the pinion depth variance.
(26) Following examples illustrate procedure for de
termining correct shim thickness.
Example I—Pinion Depth Variance is Plus (+) Model 44
Axle
Step 1—Determine desired pinion depth.
Add pinion depth variance (marked on pinion gear) to
standard setting. Result is desired pinion depth.
Standard Setting 2.625 (66.6 mm)
Pinion Depth Variance +0.004 (0.10 mm)
Desired Pinion Depth = 2.629 (66.7 mm)
Step 2—Determine total measured pinion depth.
Add measured pinion depth to measure shim thickness.
Result is total measured pinion depth.
Measured Pinion Depth 2.601 (66.0 mm)
Starter Shim Thickness +0.107(2.71 mm)
Total Measured Pinion Depth = 2.708 (68.7 mm)
Step 3—Determine correct shim thickness.
Subtract desired pinion depth from total measured
pinion depth. Result is correct shim thickness.
Total MeasuredPinion Depth 2.708 (68.7 mm)
Desired PinionDepth -2.629 (66.7 mm)
Correct Shim Thickness =
0.079 (2.00 mm)
Example II—Pinion Depth Variance is Minus (-) Model
60 Axle
Step 1—Obtain desired pinion depth.
Subtract pinion depth variance (marked on pinion
gear) from standard setting. Result is desired pinion
depth.
Standard Setting 3.125 (79.3 mm)
Pinion Depth Variance -0.002 (0.05 mm)
Desired Pinion Depth = 3.123 (79.35 mm)
Step 2—Determine total measured pinion depth.
Add measured pinion depth to measured shim thick
ness. Result equals total measured pinion depth.
MeasuredPinion Depth 3.120 (79.2 mm)
Starter Shim Thickness +0.100 (2.54 mm)
Total Measured Pinon Depth = 3.220 (81.7 mm)
Step 3—Determine correct shim thickness.
Subtract desired pinion depth from total measured
pinion depth. Result is correct shim thickness.
TotalMeasured Pinion Depth 3.220 (81.7 mm)
Desired Pinion Depth -3.123 (79.3 mm)
Correct Shim Thickness = 0.097 (2.46 mm)
(27) Remove pinion gear, rear bearing cup, and
starter shim.
(28) Install correct thickness pinion depth shim in
housing bearing cup bore and reinstall rear bearing cup.
Pinion Bearing Preload Adjustment
(1) Install pinion bearing preload shims.
(2) Install pinion gear, front bearing, oil slinger, if
equipped, yoke, washer, and old pinion nut. Tighten nut
to 260 foot-pounds (352 N»m) torque.
(3) Measure torque required to rotate pinion gear
using 0-50 inch-pound torque wrench. Rotating torque
should be 20-40 inch-pounds with new bearings, or 10-20
inch-pounds (1-2 N«m) with original bearings. Add
shims to decrease preload or subtract shims to increase
preload.
(4) Remove pinion nut, washer, and yoke when pin
ion bearing preload is adjusted.
(5) Install new pinion oil seal using Tool J-25104 on
Model 30 and 44 axles, or Tool J-24384 on Model 60 axles.
(6) Install yoke and pinion washer.