PS Magazine - TB 43-PS-637

PS, The Preventative Maintenance Monthly

ISSUE 637

DECEMBER 2005
PS Magazine - TB 43-PS-637 - Page 11 of 33
PS 637
DEC 05
19
After you de-mate the
Avenger, clean the old
grease off the ring gear with
a rag. Being careful to keep
your hands away from the
pinion gears, rotate the tur-
ret in small increments as
you wipe off the old oil
from the azimuth drive pin-
ion gears.
Make sure the ring gear
and pinion gears are clean
and free of obstructions.
Apply a light coat of
molybdenum
disulfide
lubricating oil, NSN 9150-
01-217-3103, onto the ring
gear and pinion gears.
Manually rotate the turret
two complete revolutions to
work in the lube. Wipe off
excess lube from the ring
gear and pinion gears.
Lubricate the linkage
wear points with arresting
gear grease, NSN 9150-01-
237-7468.
Here’s
the
straight
scoop…
once you finish
lubricating,
You’re
done.
Clean off ring
gear with rag
Put light coat of oil on ring gear…
…and on pinion gears
Lube
linkage
wear
points
with
grease
The procedure
is on Page 2-6 in
TM 9-1440-433-24-1.
Avenger Missile System…
S
ome Avenger missile repairmen think they can take care of the semiannual lubing
of the turret ring gear/azimuth assembly by just squirting lube through the access
cover.
It just isn’t so! To do a proper lubing job, you have to first clean off the old grease,
which means de-mating the turret from the HMMWV. If you don’t, the old grease
hardens and makes it difficult for the turret to turn. That can break ring gear teeth
or cause the inserts for the azimuth motor bracket to pop out. If that happens, you’ll
have to get depot repairmen to pay a trip to your unit to repair the damage.
Same thing can happen if you don’t use the right lube. The wrong lube can soon
turn to sludge and make turning the turret a strain.
I wish some-
one had lubed
my turret like
they were
s’posed to!
OK. now turn to the right.
Lube Right for Smooth Rotation
uh-oh… I
just popped a
bracket insert.
that means
big
repairs.
637.18-19(C!).qxd
10/31/05
8:20 PM
Page 1
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