TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 c. e. f. g. ● ● ● WARNING Avoid contact with hot manifolds, pulleys, and other moving parts to avoid personal injury. Wear proper ear protection when running engine. Noise volume of engine can cause hearing loss or injury. Protective turbocharger air inlet shield must be installed prior to doing maintenance when engine is running and air inlet has been removed. Contact with rotating blades will cause injury to personnel. CAUTION Run engine in clean area when air intake ducting is removed. Dirt, dust, and particles in unfiltered air can enter engine and damage parts or cause mechanical failure. NOTE Start and operate engine to attain a coolant operating temperature of 160-185°F (71.1-85.0oC) before adjusting governor gap. For models 7083-7395 and 7083-7398, remove two bolts (6), two Iockwashers (7), access cover (8), and spring housing (9) from governor housing. Discard two gaskets (1O) and Iockwashers. For models 7083-7391, 7083-7396, and 7083-7399, remove two bolts (11 ) and two flat washers (12) from access cover (13). Remove cover and gasket (14) from governor housing. Discard gasket. Hold buffer screw locknut (15) and back out buffer screw (16) until it extends 0.63 inch from locknut. Snug locknut to governor housing (17). Hold idle speed screw (18) and loosen idle screw locknut (19). Adjust idle speed screw to obtain idle speed of 625+/-25 RPM. Hold idle speed screw and tighten locknut. Stop engine using engine stop lever (20). Change 1 8-11