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