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

TM9-2815-202-34 (1) (2) (3) 4) WEAR POINT OF MEASUREMENT MINIMUM MAXIMUM LIMIT (inches) (inches) (inches) PISTON, CONNECTING ROD, AND CYLINDER LINER ASSEMBLY (Cont) Piston Pin (cross-head) Piston pin diameter Piston pin length Slipper bushing clearance Slipper bushing thickness Piston Rings (trunk) Gap of compression rings Top compression (fire) ring Second,third,and lower compression rings Ring to groove side clearance First ring Second ring Third ring Fourth ring Gap of oil control rings Ring-to-groove side clearance Fifth ring Sixth ring Piston Rings (cross-head) Fire Ring Gap Fire Ring Clearance Second and Third Compression Ring Gap Second Compression Ring Clearance Third Compression Ring Clearance Oil Rings - Gap - Lower Groove Oil Rings - Gap - Upper Groove Oil Ring Clearance - Top Groove Oil Ring Clearance - Bottom Groove Connecting Rod (trunk) Length of connecting rod (center bore to center bore - trunk) (center bore to center of pin - crosshead) Diameter of lower bore Inside diameter of upper bushing Inside diameter of lower connecting rod bearing Thickness of bearing Bearing-to-crankshaft journal clearance Side clearance between rods CAMSHAFT WITH BEARINGS Diameter of end bearing surface Diameter of intermediate bearing surface Diameter of drive gear surface Runout at center bearing surface (camshaft supported on end bearings) 1.4996 3.6150 0.0005 0.0870 0.0230 0.0180 0.0040 0.0095 0.0075 0.0055 0.0008 0.0015 0.0015 0.023 0.0010 0.018 0.0100 0.0040 0.0080 0.0050 0.0010 0.0010 10.1240 3.2495 3.2495 1.5025 3.0005 0.1240 0.0008 0.0080 1.4960 1.4980 1.1875 1.5000 3.6250 0.0105 0.0880 0.0380 0.0430 0.0070 0.0130 0.0110 0.0090 0.023 0.0055 0.0055 0.038 0.0050 0.043 0.0130 0.0070 0.0230 0.0140 0.0040 0.0040 10.1260 3.2515 3.2515 1.5030 3.0035 0.1245 0.0045 0.0160 1.4965 1.4985 1.1885 0.0020 1.4980 0.012 0.0860 0.0600 0.0600 0.0100 0.0220 0.0150 0.0130 0.043 0.0080 0.0080 0.060 0.0070 0.060 0.0220 0.0130 0.0430 0.0340 0.0060 0.0060 1,5080 0.0045 G-3