PS Magazine - TB 43-PS-557
PS, The Preventative Maintenance Monthly
ISSUE 557
APRIL 1999
rewmen, a little battery acid in the
wrong place will damage more than bat-
teries. The steering linkage bellcrank
assembly on your M88A1 recovery ve-
hicle is a good example.
The assembly is to the side and below
the battery box, so any leakage from the
batteries usually ends up on it, too.
The resulting corrosion makes the
rods brittle and, eventually, they
break.
So, before you lube the steering
linkage bellcrank assembly each
month with GAA, wipe off any cor-
rosion carefully with a rag. If the corro-
sion is heavy, use a solution of water
and baking soda. Wear gloves to protect
your hands.
M88A1 Recovery Vehicle . . .
M992-Series Ammo Carrier . . .
Next, put a light coat of GAA on
the outside of the assembly, then use
your grease gun to lube normally. The
GAA protects the assembly from
battery corrosion until it’s time to
lube again.
Coat
assembly
with GAA
to protect
against
battery
acid
i'm GONE!
corrosion
can't catch a
break
around
here!
it's
amazing
what
a
little lube
can
accomplish
!
PS 557
21
APR 99
20
me!
Me,
too!
okay,
who needs
a
new door
knob
?
not me!
mine's been
staked
.
rewmen, a loose door knob on your M992-series
ammo carrier will often turn into a missing one. Vi-
bration is the culprit.
During operation, the lower rear door knob, NSN
5355-01-183-8387, slowly vibrates loose from the
quick release plunger holding it in place. Every time
a knob gets lost, you’re out another $14.
So, keep that knob on the job. After you screw the
knob tightly in place, stake the end of the plunger by
separating or bending the threads slightly with a cold
chisel and hammer. Then, even though the knob might
loosen, it can’t fall off.
Stake end of
plunger to
retain knob
M109A2-A6 SP Howitzers and M992-Series Ammo Carriers . . .
Snub of a Grease Fitting
O
perators, the gear shift selector grease fit-
ting on M109A2-A6 SP howitzers and M992-
series ammo carriers was left out of the lube
order in your manuals.
Without lube, the shifter gets tight and hard
to shift.
So, keep the selector lubed. During sched-
uled services, give the fitting four to five pumps
of grease. Make a note until the service is added
to TM 9-2350-293-10, -311-10 and -314-10.
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