TM 55-2840-254-23
5-23.1 BACKLASH CHECK-OVERSPEED DRIVE AND OUTLET COVER ASSEMBLY
5-23.1
b. Measure thickness of shim (20) in three
locations 120 degrees apart. Use outside
micrometer caliper. Record average
thickness of shim (20).
NOTE
If backlash is less than 0.007 inch, a
thinner shim must be installed. If
backlash is greater than 0.013 inch, a
thicker shim must be installed.
Increasing or decreasing shim
thickness bv 0.002 inch will change
backlash approximately 0.001 inch.
c. Select shim (20) from shim selection table
15. Repeat steps 8. through 14.
SHIM SELECTION TABLE
SHIM PART
NUMBER
2-080-229-01
2-080-229-02
2-080-229-03
2-080-229-04
2-080-229-05
2-080-229-06
2-080-229-07
2-080-229-08
2-080-229-09
2-080-229-10
2-080-229-11
2-080-229-12
2-080-229-13
2-080-229-14
2-080-229-15
2-080-229-16
SIZE
0.0015-0.0035 inch
0.004-0.006 inch
0.007-0.009 inch
0.010-0.012 inch
0.013-0.015 inch
0.016-0.018 inch
0.019-0.021 inch
0.022-0.024 inch
0.025-0.027 inch
0.028-0.030 inch
0.031-0.033 inch
0.034-0.036 inch
0.037-0.039 inch
0.040-0.042 inch
0.043-0.045 inch
0.046-0.048 inch
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Change 3
