TM-9-2320-365-34-2 LMTV Direct Maintenance Manual M1078 Series - Volume 2 Download
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TM 9-2320-365-34-2 (12) Insert No. 1 piston ring (7) inside No. 1 cylinder bore (10) far enough to be within area of ring travel, 2.00-3.00 in. (5.08-7.62 cm) deep. CAUTION Ends of ring must be filed if gap is not within limits. File from outer surface of ring toward inner surface. Failure to comply may result in damage to equipment. (13) Measure end gap of No. 1 piston ring (7). Refer to Table 20-7. Piston/Piston Ring Clearances. (14) Perform steps (12) and (13) for remaining No. 1 piston rings (7), No. 2 piston rings (8), and oil control rings (9). (15) Measure piston oil control ring groove (11). Refer to Table 20-7. Piston/Piston Ring Clearances. (16) Install oil control ring (9) on piston crown (1). (17) Measure clearance between oil control ring (9) and oil ring groove (11). Refer to Table 20-7. Piston/Piston Ring Clearances. (18) Perform steps (15) through (17) for remaining piston crowns (1). Table 20-7. Piston/Piston Ring Clearances Item to be measured Clearance End gap of No. 1 piston ring installed in cylinder bore size of 4.134 in. (10.50 cm) (A) 0.016-0.026 in. (0.04-0.06 cm) End gap of No. 2 piston ring installed in cylinder bore size of 4.1348 in. (10.50 cm) (B) 0.028-0.038 in. (0.07-0.09 cm) End gap of oil control ring installed in cylinder bore size 4.1348 in. (10.50 cm) (C) 0.012-0.024 in. (0.03-0.06 cm) Groove width in piston crown for oil control ring (D) 0.1586-0.1596 in. (0.402-0.405 cm) Clearance between groove and oil control ring (E) 0.0015-0.0031 in. (0.003-0.007 cm) 20-45