TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 (2) Install ring gear (10) on flywheel (2) as follows: (a) Place flywheel (2), crankshaft side up, on a solid flat surface. CAUTION If a torch is used, keep torch moving around circumference of gear to avoid hot spots. Under no circumstances should gear be heated over 400 o F (204 o C). Excessive heat may destroy original heat treatment. Heat indicating “crayon”, which melts at a predetermined temperature, should be placed on work surface to determine heat range. (b) (c) (d) Place ring gear (10) on a metal surface and heat uniformly. Heat source can be a blow torch, acetylene torch (11), or oven. After ring gear has been heated, place it in position on flywheel (2) with chamfer side up. Tap ring gear into place against shoulder of flywheel. Working around circumference to avoid binding. NOTE If ring gear cannot be tapped into place readily, remove ring gear and apply additional heat. Follow above caution about not overheating ring gear. 4-73