PS Magazine - TB 43-PS-582
PS, The Preventative Maintenance Monthly
ISSUE 582
MAY 2001
L
ubing the spade release mechanism on your M88A1 recovery vehicle won't do
much good if you don't clean it first.
The spade lockpin gets covered with dirt, mud and sand. As the spade release is
used, that gunk gets pulled inside the mechanism. Pretty soon, you have a spade that
won't lock or release.
PS 582
MAY 01
23
M109-Series SP Howitzer, M992A2 Ammo Carrier…
PS 582
MAY 01
22
M88A1 Recovery Vehicle…
Clean It Before You Lube It
Clean and lube the mechanism like this:
1.
Wash off any dirt or mud with clean
water and a nylon brush.
2.
Wipe the spade lockpin dry with a
clean cloth. If dirt still shows on the
cloth, wash and dry the lockpin again.
3.
Apply a light coat of GAA to the
exposed part of the spade lockpin.
4.
Pump GAA into the grease fitting on
the right side of the pin housing until
new grease flows from the relief valve.
Wipe off the old grease.
5.
Operate the spade release mechanism
a few times. That ensures the entire
spade lockpin is properly lubed.
If it's too late and the mechanism is
already frozen, DS maintenance will fix
the problem.
If you still can’t get a good seal
around the exhaust deflector, contact
your support—now.
with NSN 5330-01-382-4272. Use the
whole packing to fill the gap between
the deflector and the hull mount.
If the seal support is bent so the
deflector won’t seat right, replace it.
Use NSN 2990-00-894-0075 for a new
support.
Make sure the cap screws that hold
the deflector snug against the packing
are not stripped or cross-threaded.
Replace bad screws with NSN 5305-
00-269- 3238.
oes your howitzer or ammo carrier
have exhaust leaks in the engine com-
partment?
If so, the culprit could be a worn-
out exhaust deflector packing. It’s sup-
posed to plug up the space between the
deflector and the end of the engine
exhaust pipe.
Once the packing is worn enough,
you’ll be getting exhaust leaks in the
engine compartment. That’s a definite
no-no.
Replace that packing when you start
seeing leaks. A new packing comes
I don’t under-
stand it. I just
lubed
your
spade release
mechanism.
yeah,
but you
didn’t
clean it.
Replace worn-
out packing
Replace damaged
or missing screws
Clean spade lockpin
before lubing mechanism
582. 22-23 (C)
4/4/01
10:25 PM
Page 1
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