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 TM 9-2520-238-34
REPAIR TRANSFER GEARCASES A, B, AND C -- Continued
0017 00
RUN-IN TEST
1.
Mount gearcase on test stand in the same position as when installed in the carrier.
2.
Fill gearcase with 5 pints of oil so level is between ADD and FULL marks on liquid level gauge rod. Provide suitable
external lubricating oil supply for differential oil pump and the hydraulic pump (if installed).
NOTE
Provide artificial heating and cooling, if needed.
Do not allow oil temperature to exceed 280 F (138 C) at any time during run-in tests. At each
stage, watch for over-heating, undue noise, and vibration. Check all seals and covers for oil
leakage.
3.
Run gearcase in the following minimum time duration stages:
Table 1. TIME DURATION STAGES
Stage (rpm)
Load (pound-foot)
Stage Time (minutes)
1100 to 1300
No load
5
1900 to 2100
No load
5
2800 to 3000
No load
5
4.
Remove drain plug and drain oil for at least 15 minutes into a suitable container. Install drain plug. Leave oil residue in
gearcase for rust prevention.
5. Remove sling and lifting device from transfer gearcase.
0017 00-25
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