MCi Crusader II 1989 Maintenance Manual page 56

Date
1-1-89
Page 2-28
MC-9 MAINTENANCE MANUAL
POINTER
Figure 2-81. Checking Ring Gear Runout.
2. Adjust the dial indicator so that the plunger or pointer is
against the back surface of the ring gear.
3. Adjust the dial of the indicator to zero (0).
4. Rotate the differential and ring gear while you read the
dial indicator. The runout of the ring gear must not exceed .008
inch (.20 mm) (Figure 2-81). If runout of the ring gear exceeds
specifications, remove the differential and ring gear assembly
from the carrier. See the disassembly procedure in earlier
pages of this section and the following steps 5 and 6.
5. Check the differential parts including the carrier for the
problem that causes the runout of gear to exceed specifica-
tions. Repair or replace parts.
6. After the parts are repaired or replaced, install the differ-
ential and ring gear into the carrier. See the procedure in
preceding pages of this section.
7. Repeat preload adjustment of differential bearings.
ADJUSTING BACKLASH OF THE RING GEAR
Measure the outer diameter of ring gear for approximate
pitch diameter (Figure 2-82).
t
MEASURE
UTER DIAMETER
FOR
APPROXIMATE
PITCH DIAMETER
l
Figure 2-82. Determining Approximate Pitch Diameter.
Specifications:
Range of backlash setting - .008 ta .018 inch (.20 to .46 mm).
Backlash setting for new gear sets - .012 inch (.30 mm).
If the old gear set is installed, adjust the backlash to the
setting that was measured before the carrier was disassembled.
If a new gear set is· installed. adjust the backlash to the
correct specificadtion for new gear sets.
During the check of tooth contact patterns: the backlash can
be adjusted within specification limits, if needed. to change the
location of the pattern.
1. Attach a dial indicator on the mounting flange of. the
carrier (Figure 2·83).
2. Adjust the dial indicator so that the plunger or pointer is
against the tooth surface (Figure 2-83).
3. Adjust the dial of the indicator to zero (0).
4. Hold the drive pinion in position.
Figure 2-83. Attaching Dial Indicator.
5. While you read the dial indicator, rotate the differential
and ring gear a <small amount in both directions. against teeth of
the drive pinion. If the backlash reading is within specification,
continue by checking tooth contact patterns. If the backlash
reading is not within specifications, adjust backlash as needed.
Continue by following steps 6 and 7.
NOTE: Backlash is increased by moving
the ring gear away from the drive pinion
(Figure 2-84). Backlash Is decreased by
moving the ring gear toward the drive pin-
ion (Figure 2-85).
6. Loosen one bearing adjusting ring one notch, then
tighten the opposite ring the same amount (see Figures 2-84
and 2-85).