TM 10-3930-641-34-1
PISTON AND RINGS SPECIFICATIONS
(Sheet 1 of 1)
(1)
Clearance between oil ring
and groove........................ .0020 + .0010 in. (0.051 + 0.025 mm)
(2)
Bore in piston for
pin (new)......................... 2.0005 + .0002 in. (50.81 + 0.005 mm)
Clearance between pin and bore in
piston (new) ...................... .0007 + .0004 in. (0.018 + 0.010 mm)
Maximum permissible clearance between
piston pin and bore in piston (worn) ............... .002 in. (0.05 mm)
Clearance between ends of piston ring, installed in cylinder liner with
bore
size of ...................................................... 5.401 in. (137.19 mm)*
(3)
Top ring ............................ .0285 + .0075 in. (0.724 0.191 mm)
(Install the top ring with the mark "UP-1" toward the head of the
piston.)
(4)
Center ring..................... .0425 + .0075 in. (1.080 0.191 mm)
(Install the center ring with the mark "UP-2" toward the head of the
piston.)
(5)
Oil ring ............................... 0225 + .0075 in. (0.572 + 0.191 mm)
*Increase in clearance between ends of piston rings for each .001 in. (0.025
(Install the ring spring with its point of junction 1800 from the ring
mm) increase in size of cylinder liner bore: .003 in. (0.076 mm).
gap.)
TA098819
2-89