APU GEAR CASE: DISASSEMBLY, INSPECTION, REPAIR AND ASSEMBLY (CONTINUED)YZAAABACADInstall two 1/4-20 screws in bearing retainer (37).Alternately tighten 1/4-20 screws until bearing retainer (37) ispushed free from chain housing (23).Remove and discard gasket (38).Remove drive seal (39) and bearing (40) from bearing retainer (37).Discard seal.Remove sprocket (41).Remove drive bearing (42) from opening in chain housing (23).INSPECTIONA Inspect sprockets for worn, chipped, or cracked teeth.BInspect bearings per TM 9-214.C Inspect gear case for cracks.DInspect chain for wear.REPAIRReplace broken or defective parts.12-11Change 4TM 9-2350-267-34
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