TM 5-5420-202-34
FINAL DRIVE REPAIR (Sheet 29 of 30)
Apply sealing compound (Item 9,
80.
81.
Using 1/2 inch drive hinged bar or 5/8
inch allen wrench as necessary, install
four plugs (AR) in case (U).
82.
Using 3/16 inch allen wrench, install plug
(AS) in case (U).
83.
Using 7/16 inch wrench, install air pres-
sure valve or vent line elbow (AT) in
case (U).
84.
Fill final drive with lubricant (LO 5-5420-202-12).
85.
Inspect for oil leaks. Correct as necessary.
Perform axial play and backlash tests.
86.
AXIAL PLAY AND BACKLASH TESTS:
Properly support final drive (A) to prevent
movement and possible injury to personnel.
1.
Secure C-clamp to pinion shaft (B) with
care to prevent damage to pinion shaft
spline.
2.
Secure dial indicator to final drive stud
(C) with dial resting on pinion shaft (B).
Set dial to zero.
3.
Using C-clamp as a handle, pull pinion
shaft (B) up and push down and record dial
indicator reading. Repeat procedure four
times.
4.
If all measurements are between 0.011 to 0.077 inches. remove dial
indicator and go to step 5. If all measurements are not within
tolerance, tag final drive (A) "UNSERVICEABLE (NO AXIAL END
PLAY)" and return final drive (A) to supply for depot rebuild.
Go on to Sheet 30
Change 2
7-29
