TM-9-2520-238-34 Direct Support for M113 Family Major Assemblies Download
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TM 9-2520-238-34 REPAIR TRANSFER GEARCASE F — Continued 0019 00 RUN-IN TEST NOTE Conduct run-in test in accordance with local standard procedures. 1. Mount gearcase on test stand in the same position as when installed in the carrier. 2. Fill gearcase with 5 pints of oil (WP 0014 00). Oil level is to be between the ADD and FULL marks on liquid level gauge rod. 3. Provide suitable external lubricating oil supply for the differential oil pump and the ramp hydraulic pump (if installed). 4. Before run-in operation. Provide artificial heating and cooling, if needed. NOTE Do not allow oil temperature to exceed 280 degrees F (138 degrees 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. 5. Run gearcase in the following minimum time duration stages. Table 1. Stage (rpm) Load (foot-pounds) Stage Time (minutes) 1100 to 1300 No load 5 1900 to 2100 No load 5 2800 to 3000 No load 5 6. Remove drain plug and drain oil for at least 15 minutes into a suitable container and then install drain plug. 7. Leave oil residue in gearcase for rust prevention. 0019 00-24 8. Remove sling and lifting device from transfer gearcase.