TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download

TM9-2815-202-34 (1) (2) (3) (4) NEW NEW WEAR POINT OF MEASUREMENT MINIMUM MAXIMUM LIMIT (inches) (inches) (inches) OIL PUMP AND REGULATOR VALVES Oil Pump Gears Backlash adjustment with shims (pump drive gear) Pressure Relief Valve Free length of large spring, inches Compressed length of large spring (64.5 +3 lb) Free length of small spring, inches Compressed length of small spring (32 + 1 lb force) Pressure Regulating Valve Free length of spring, inches Compressed length of spring (64.5 + 3 lb) Oil Cooler Bypass Valve Force to compress spring to 0.75 inch CYLINDER HEAD ASSEMBLY Exhaust Valves, Guides and Inserts Diameter of valve stem Inside diameter of valve guide Valve stem-to-guide clearance Valve face seat angle (degrees) Valve head-to-cylinder head position -- (-) is recessed and (+) is protruding Height of valve guide above cylinder head Height of bridge guide above cylinder head Diameter of valve head Outside diameter of valve seat insert Width of valve seat insert Runout of valve seat Cylinder Head Casting Transverse warpage of cylinder head Longitudinal warage of cylinder head Diameter of cam follower bore Diameter of valve seat insert counterbore Depth of counterbore Thickness of cylinder head (top deck-to-fire-deck) Diameter of cam follower Follower-to-cylinder head clearance Width of roller slot Diameter of roller pin hole Diameter of roller pin Outside diameter of roller Inside diameter of roller bushing Pin-to-bushing clearance Roller-to-follower side clearance 0.006 0.3100 0.3125 0.0020 30 -0.0230 1.175 1.2615 0.0468 1.0620 1.2600 0.3380 3.5560 1.0600 0.0010 0.590 0.4362 0.4374 0.9077 0.4390 0.0013 0.0110 0.012 2.96 2.11 2.57 2.01 2.96 2.11 0.3105 0.3135 0.0035 +0.0060 0.880 2.0400 1.185 1.2625 0.0937 0.0020 0.0630 1.2610 0.3520 3.5680 1.0610 0.0030 0.598 0.4372 0.4377 0.9082 0.4395 0.0021 0.0230 0.012 58 lb 28 lb 58 lb 6.5 Ibs. 0.3090 0.3140 0.005 +0.038 0.0937 0.0020 0.0040 0.0080 1.0650 3.5360 0.0060 0.010 0.0230 G-5