TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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(4) (5) (6) (7) (8) (9) (10) (11) Support one end of oil cooler assembly (5) on blocks. Attach puller (23) to oil cooler assembly and place bar tooI (24) on upper tube bundle (25). Press upper tube bundle (25) down enough to remove seal (26) from oil cooler assembly (5). Remove puller (23) and bar tool (24). Discard seal. Invert oil cooler assembly (5). Using puller (23) and bar tool (24), press upper tube bundle (25) down enough to remove remaining seal (26) from oil cooler shell. Remove puller, bar tool, and upper tube bundle. Discard seal. Repeat steps (4, 5, and 6) for lower tube bundle (27). TM9-2815-202-34 Remove seven bolts (28), seven Iockwashers (2), oil return junction (29), and gasket (30) from rear cover (21). Remove oil return junction. Discard Iockwasher and gasket. If necessary, remove two plugs (31) and seven plugs (32) from cooler shell (33). If necessary, remove drain cock (34) from rear cover (21). If necessary, remove four bolts (28), four Iockwashers (2), and support bracket (35) from cover (21). Discard Iockwashers. c. Cleanlng/inspection (1) (2) (3) (4) Inspect front and rear oil cover, access cover, and oil cooler shell for cracks or damage. Using spring tester (36), check valve spring (11) load. Replace spring if it compresses to length of 0.813 inch (20.65 mm) with a 6.5 lb load. Inspect retainer for cracks, warps, or damage. Inspect tube bundles for damaged baffles, cracks, or plugged tubes. d. Assembly (1) (2) (3) (4) (5) rear a If removed, instaIl support bracket (35) to rear cover (21). Secure with four bolts (28) and four Iockwashers (2). Torque bolts to 30-35 Ib-ft (41-47 N-m). If removed, install drain cock (34) into rear cover (21). Secure gasket (30) and oil return junction (29) to rear cover (21) with seven bolts (28) and seven Iockwashers (2). Torque bolts to 30-35 Ib-ft (41-47 N-m). If removed, install two plugs (31) and seven plugs (32) into oil cooler assembly (5). Tighten securely. Support one end of oil cooler assembly (5) on blocks. 4-219