TM 5-5420-202-34
FINAL DRIVE REPAIR (Sheet 14 of 30)
65.
Using inside micrometer, measure case
(Q) bore diameters (AP and AQ) a
minimum of four times at four equally
spaced points. Record measurements.
If measurements do not exceed 9.0578
66.
inches at (AP) and 9.8452 inches at
(AQ), go to step 68.
If any measurement exceeds the above,
67.
reassemble final drive and tag
"UNSERVICEABLE (CARRIER
BEARING BORE)." Return final drive
to supply for depot rework.
NOTE
Drive gear (U) and pinion gear (F) are a matched set. If
either gear is unserviceable, both gears must be replaced as
a set.
Check drive gear (U) and pinion gear (F)
68.
for cracked, broken, or chipped teeth.
Replace set if either gear is unservice-
able.
69.
Using penetrating dye, check drive gear
(U) and pinion gear (F) for pitting.
Go on to Sheet 15
7-14 Change 2
