PS Magazine - TB 43-PS-554

PS, The Preventative Maintenance Monthly

ISSUE 554

JANUARY 1999
PS Magazine - TB 43-PS-554 - Page 18 of 43
M113-Series FOV . . .
Hatch should compress
bumper about
1
/
4
inch
ouch!
i wish he'd
take a look at his
hatch bumper
.
Hatch hinge cracks here
rivers, if you’re having problems
with cracked hatch hinges, the culprit
might be a low hatch bumper.
If the bumper doesn’t sit high enough,
there’s free play between the bumper and
the driver’s hatch—even when the hatch
is locked open.
The hatch generates a lot of stress
when it bounces up and down during
operation. Pretty soon—
CRA-A-ACK!
—
the hinge gives way.
hook engaged, the hatch should com-
press the bumper about
1
/
4
inch. If it
doesn’t, get your mechanic to raise
the bumper using flat washers, NSN
While you’re at it, check the con-
dition of the bumper. If the rubber is
cracked, chipped or has lost its flex-
ibility, get your mechanic to replace
it. He’ll use NSN 5340-00-209-9281
for the M577- and M1068-series ve-
hicles. NSN 5340-00-679-9211 gets
a bumper for all other M113-series
vehicles.
Check the hatch bumper right now.
With the hatch open and the hold-down
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