MAINTENANCE MANUAL - Meritor
MAINTENANCE MANUAL - Meritor
MAINTENANCE MANUAL - Meritor
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5.If the difference is at or within the specification<br />
in Table I: Continue by checking the runout.<br />
• If the difference is less than the specification:<br />
Repeat as needed.<br />
Table I: Expansion Between Bearing Caps<br />
Differential models RS-140,<br />
RS-145 e RS-160<br />
RS 120 and all other differential<br />
models<br />
Ring Gear Runout<br />
1. Attach a dial indicator in the differential case<br />
mounting flange. Figure 5.42.<br />
ROTATE RIG GEAR<br />
DIAL INDICATOR<br />
2.Adjust the dial indicator so that the plunger<br />
or pointer is against the back surface of the<br />
ring gear. Figure 5.42. Set the dial indicator to<br />
ZERO.<br />
3. Rotate the main differential case and ring gear.<br />
Read the dial indicator. The ring gear runout<br />
must not exceed 0.008-inch (0.200 mm).<br />
• If the ring gear runout is within the specification,<br />
proceed to Ring Gear Backlash.<br />
<strong>MAINTENANCE</strong> <strong>MANUAL</strong><br />
0.050-0.229 mm<br />
(0,002-0,009”)<br />
0.15-0.33 mm<br />
(0,006-0,013”)<br />
Figure 5.42<br />
Assembly and Installation<br />
• If the ring gear runout exceeds the specification,<br />
remove the main differential case and<br />
ring gear assembly from the differential case.<br />
See the Section 3.<br />
A. Inspect the main differential case parts, including<br />
the differential case, for wear and<br />
damage. Repair or replace parts as necessary.<br />
B. Install the main differential case and ring<br />
gear assembly into the differential case.<br />
See the procedure in this section.<br />
C. Repeat the procedure for preload adjustment<br />
of the main differential side bearings.<br />
Check the Ring Gear Backlash<br />
Table J: Specifications<br />
Ring Gear Pitch<br />
Diameter<br />
Less than 17-inches<br />
(431.8mm)<br />
Greater than<br />
17-inches<br />
(431.8mm)<br />
Range of Backlash<br />
Setting<br />
0.20-0.46 mm<br />
(0,008 - 0,018”)<br />
(0.25-0.51 mm<br />
0,010 - 0,020”)<br />
Backlash Setting<br />
for New Gear<br />
Sets<br />
0,30 mm (0,012”)<br />
0,38 mm (0,015”)<br />
Measure the outer diameter of the ring gear for<br />
the approximate pitch diameter. Figure 5.43.<br />
• If the old gear set is installed, adjust the backlash<br />
to the setting that was measured before<br />
the differential was disassembled.<br />
• If a new gear set is installed, adjust the backlash<br />
to the correct specification for new gear<br />
sets.<br />
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