MAINTENANCE MANUAL - Meritor

Assembly and Installation
KEY “T”
6. Proceed to check ring gear runout.
BARS MUST NOT
TOUCH BEARING
Figure 5.38
SQUEEZE EACH
RING IN A GROOVE
Figure 5.39
Large Micrometer Method
1.Hand-tighten the adjusting rings against the
main differential bearings.
2. Use a large micrometer to measure distance
X and Y between the opposite surfaces of the
bearing caps. Record the measurement. Figure
5.40 and Figure 5.41.
Figure 5.40
MICROMETER
CAUTION
Figure 5.41
WHEN TURNING 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.
3. Use a T-bar wrench to tighten each bearing adjusting
ring one notch. Figure5.36.
4. Measure distance X and Y again. Compare
the measurements with the distances X and Y
measured in Step 2. The difference between
the two distances is the amount the bearing
caps have expanded. See the Table H.
Table H: Example
Distances X and Y BEFORE
tightening the adjusting rings
Distances X and Y AFTER
tightening the adjusting rings
= 389 mm (15.315”)
= 389 mm (15.315”)
15.324” – 15.315” = 0.009” difference
389.230 mm – 389.000 mm = 0.230 mm difference
56 MAINTENANCE MANUAL