TM-9-2320-272-24-4

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4

JUNE 1998

TM-9-2320-272-24-4 - Page 191 of 836

TM 9-2320-272-24-4

5-28. CYLINDER LINERS AND BLOCK MAINTENANCE (Contd)

4.

Check cylinder liner (1) for wear:

a. Measure inside diameter of cylinder liner (1) in two places offset 90° at top of piston travel.

b. Record inside diameter measurements A and B.

c. Measure inside diameter of cylinder liner (1) in two places offset 90° at bottom of piston travel.

d. Record inside diameter measurements C and D.

e. Compare inside diameter measurements A with B and C with D. Tag cylinder liner (1) for

replacement if difference exceeds 0.0016 in. (0.041 mm).

f. Compare inside diameter measurements A with D and B with C. Tag cylinder liner (1) for

replacement if difference exceeds 0.0016 in. (0.041 mm).

5-185