PS Magazine - TB 43-PS-577
PS, The Preventative Maintenance Monthly
ISSUE 577
DECEMBER 2000
PS 577
5
DEC 00
PS 577
4
DEC 00
ibration loosens the halfshaft
capscrews on HMMWVs, making an
occasional tightness inspection in your
own best interest.
Make sure that you check
all
hard-
ware holding the halfshafts in place,
but especially the retaining capscrew
inside
each geared hub.
It’s relatively easy to see if the
capscrews at the differential end of the
shaft are loose. Look for shiny spots
around the screws.
If you see a loose screw, replace both
the lock washer and the screw. Remem-
ber to dip the screw in sealing com-
pound, NSN 8030-01-171-7628, before
installing it. That’ll help keep the screw
tight. Then torque it to 48 lb-ft.
It’s not so easy to check the cap-
screw in the hub. You must remove an
access plug to get to the screw, then
you must use a torque wrench to tell if
the screw is loose.
ne way to reduce the mess made in draining oil from an FMTV’s transmis-
sion is to make yourself a draining aid.
Cut a quart-size sports plastic drink bottle to fit around the drain hole and
part of the oil pan, so that most of the
oil goes through the bottle into your
drain pan.
The only mess comes when you
remove the drain plug and put the bottle
in place. The quicker you are, the less
oil gets on the exhaust pipe, where most
of it usually goes, or on the ground.
FMTV . . .
HMMWV . . .
If the screw shows 37 lb-ft torque,
it’s tight. If the screw shows less, get
rid of it and the lock washer. Install a
new lock washer and screw, remem-
bering to dip the screw in sealing com-
pound. Torque the screw to 37 lb-ft.
Check both ends of the halfshaft for
tightness at every 6-month service.
Drain aid reduces oil change mess
these
capscrews are
tight.
..
huh?
hold it!
your inspection
is only
half done
if you don't check
inside
the
hub
!
here's
a
cheap
and
simple way
to keep
transmission oil from making
a
mess
of your fmtv
and maintenance
area!
Don't forget hub's capscrew
PS 577
4
DEC 00
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