TM-9-2815-205-34

ENGINE WITH CONTAINER; MODELS 5063-5299, 5063-5392, 5063-5393, 5063-5395, 5063-5398, 5063-539F, 5063-539L

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

AUGUST 1992

TM-9-2815-205-34 - Page 334 of 596

TM 9-2815-205-34

3-51. PISTON AND CONNECTING ROD MAINTENANCE - CROSS-HEAD (MODELS 5063-5392,

5063-5393, 5063-539F, AND 5063-539L) (Cont)

NOT E

●

Thickness gage must be perfectly flat and free of nicks and bends.

(2)

(3)

●

Select thickness gage thickness requiring six pounds pull to move. Piston to liner

clearance will be 0.001 inch greater than thickness of thickness gage used. For

example, a 0.004 inch thickness gage indicates 0.005 inch clearance when withdrawn

with a six pound pull.

With cylinder liner (2) installed in cylinder block, hold piston skirt (21) upside down in liner and

check clearance in four places, 90 degrees apart, using a thickness gage (26) attached to

spring scale (27). Clearance must be 0.0035 to 0.0072 inch with new parts and a maximum of

0.012 inch for used parts.

If binding occurs between piston and liner, remove piston and examine piston and liner for

burrs. Remove burrs on skirt with X-fine sharpening stone. Remove burrs in liner with fine flat

hone and recheck clearance.

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