TM 55-1905-220-14-4
3-40.1. PISTON - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
upside down in the liner and
check the clearance in four
places 900 apart. Use
feeler gage 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.
Select a feeler gage with a
thickness requiring a pull
of six pounds (26.7 N) to
remove. 'The clearance will
be .001 inch (0.003 cm)
greater than the thickness
of the gage used, i.e., a
.004 inch (0.010 cm) feeler
gage will indicate a clear-
ance of .005 inch (0.013 cm)
when it is withdrawn with a
pull of six pounds (26.7 N).
The feeler gage must be per-
fectly flat and free of
nicks and bends.
3-817