TM10-3930-660-20 11-4. PLANETARY WHEEL ENDS - SERVICE This task covers: Service by checking oil level and adding oil, if necessary. Service by draining and refilling oil. Initial Setup - Tools Materials/Parts Tool Kit, Automotive Mechanics Container Gear Oil (App. C, Item 34) Equipment  Condition Vehicle parked on level ground. SERVICE BY CHECKING, DRAINING AND ADDING  OIL The procedure for servicing each of the four planetary wheel ends is the same. 1. CHECK PLANETARY WHEEL END OIL LEVEL AND ADD OIL, IF NECESSARY. a. b. c. d. e. f. Start engine and move vehicle forward or backward, as required, until embossed oil level line (a) on planetary cover (1) is horizontal. Set parking brake and stop engine. Remove oil level check plug (2) from planetary cover (1). Check that oil level is up to bottom of check plug hole. If not, add new oil as described in step “e” of this section. If necessary, add new oil through oil level check plug hole until oil level reaches bottom of check plug  hole. Do  not  overfill. Install oil level check plug (2) to planetary cover (l). 11-4

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