TM 9-2350-261-20-1Table 2-1. Unit Level Preventive Maintenance Checks and Services for M113A2 FOVItemIntervalItem ToProcedureNot MissionNo.BeCapable If:Inspected67Semi-Fan Gear-Check fan gearbox oil level and add oil,No oil in sight glass.Annualboxif needed.Any Class II or–Drain gearbox every 1500 milesgreater oil leak.or semi-annually. Remove drainplug and packing; discard pack-ing.-Inspect drain plug and oil formetallic particles and foreignmatter. If metal chips are found,cooling fan assembly may requirereplacement (see pages 8-44,8-45). Clean drain plug and applyantiseize compound to threads(see Item 4, Appendix C). Lubri-cate new packing with OE/HDOoil. Install drain plug and pack-ing in gearbox housing. Refillgearbox with OE/HDO oil (ap-proximately 10 ounces). Bring oillevel to top center of sight gage.Change 3 2-89
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