TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 4-19. BLOWER DRIVE GEAR AND SUPPORT REPLACEMENT This task covers: a. Removal b. Disassembly c. -Cleaning/Inspection d. Assembly e. Installation INITIAL SETUP MODELS EXPENDABLE/DURABLE SUPPLIES ALL Engine oil (App C, Item 16) 4 Bolts 3/8-24 x 4-1/2 (App C, Item 5) Nut 3/8-24 (App C, Item 29) Dry cleaning solvent (App C, Item 10) TOOLS AND SPECIAL TOOLS General mechanics tool kit (App B, Item 96) EQUIPMENT CONDITION . Dial indicator (App B, Item 44) Micrometer (1-2") (App B, Item 65) Vernier caliper (App B, Item 10) Torque wrench (App B, Item 101) MANDATORY REPLACEMENT PARTS Para Description 4-15 Breather removed 4-16 Blower drive shaft and hub removed (7083-7395 and 7083-7398) ■ 4-18 Blower removed 5-15 Blower drive shaft and hub removed (7083-7391, 7083-7396, and 7083-7399) 1 Gasket (App F, Item 69) 1 Key washer (App F, Item 167) 2 Copper washers (App F, Item 163) a. Removal (1) Remove two bolts (1) and two copper washers (2) securing blower drive support assembly (3) to rear end plate. Discard copper washers. (2) Remove blower drive gear support assembly (3) and gasket (4) from rear end plate. Discard gasket. b. Disassembly (1) (2) (3) Clamp blower drive gear support assembly (3) in a soft-jawed vise with blower drive gear (5) on top. Straighten tangs on key washer (6). Remove nut (7). Discard key washer. Remove thrust washer (8), thrust bearing (9), gear (5), and thrust bearing (10) from gear support (11). 4-62 Change 1