| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-221-14-3
6-27.1.
PISTON - MAINTENANCE INSTRUCTION ( Continued)
LOCATION/ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
(
(2) A new cylinder liner has
an inside diameter of
4.2495 to 4.2511 inch
(10.7937 to 10.7978 cm).
The piston-to-liner
clearance, with new parts,
will vary with the
particular piston dia-
meter. A maximum clear-
ance of .012 inch (0.031
cm) is allowable with
used parts.
(3) With the cylinder liner
installed in the cylinder
block, hold the piston up-
side down in the liner and
check the clearance in
four places 90apart.
(4) Use feeler gage set to
check the clearance. The
spring scale, attached to
the proper feeler gage,
is used to measure the
force in pounds required
to withdraw the feeler
gage.
(5) Select a feeler gage with
a thickness that will
require a pull of six
pounds (26.7 N) to remove.
The clearance will be
.001 inch (0.003 cm)
greater than the thick-
ness of the gage used,
i.e., a .004 inch (0.010
cm) feeler gage will
indicate a clearance of
.005 inch (0.013 cm) when
it is withdrawn with a
pull of six pounds (26.7
N). The feeler gage must
be perfectly flat and free
of nicks and bends.
6-430
|
||
|
||
