Specifications

55
Assembly and Installation
MAINTENANCE MANUAL
NOTE:
The roll pins for the adjusting rings are in-
stalled after the tooth contact pattern is
checked.
Dial Indicator Method
1. Attach a dial indicator in the differential case
mounting ange so that the plunger or the
pointer is against the back surface of the ring
gear. Figure 5.35.
CAUTION
WHEN YOU TURN THE ADJUSTING RINGS,
ALWAYS USE A TOOL THAT ENGAGES TWO
OR MORE OPPOSITE NOTCHES IN THE
RING. A T-BAR WRENCH CAN BE USED FOR
THIS PURPOSE. IF THE TOOL DOES NOT
CORRECTLY FIT INTO THE NOTCHES, DAM-
AGE TO THE LUGS WILL OCCUR.
NOTE:
On 160 Series differentials, half of the bear-
ing assembly extends out of the bearing
cap and differential case.
2.UseaT-barwrenchtoloosentheadjusting
ring that is opposite the ring gear. A small
amount of clearancewill show on the dial
indicator. Figure 5.36.
3. Use one of the following methods to move the
main differential case and the ring gear care-
fully to the left and right while you read the dial
indicator.
A. Insert two pry bars between the bearing ad-
justingringsandtheendsofthemaindiffer-
ential case. The pry bars must not touch the
main differential case bearings. Figure 5.37.
B. Insert two pry bars between the main differential
case and the ring gear at locations other than
described in Step A. The pry bars must not touch
the main differential bearings. Figure 5.38.
4.Tightenthebearingadjustingringuntilthedial
indicator reads ZERO end play. Move the main
differential case and ring gear to the left and
right as needed. If necessary, repeat Step A or
Step B.
5.Tighteneachbearingadjustingringonenotch
from ZERO. The side bearings of the main dif-
ferential case should have a preload of 15-35lb-
in (1.7-3.9N m). Figure5.39.
This procedure should expand the caps 0.008-
0.010-inch (0.203-0.254 mm), and place the
correct preload on the bearings when they are
installedintothebanjohousing.
Figure 5.36
Adjustment Main Differential Case Bea-
rings Preload
Use either the dial indicator or the large mi-
crometermethodtoinspectandadjustthemain
differential side bearings preload.
DIAL INDICATOR
T-BAR
WRENCH
BARS MUST NOT
TOUCH BEARING
ADJUSTING RING OPPOSITE
RING GEAR
Figure 5.35
Figure 5.37