PS Magazine - TB 43-PS-622

PS, The Preventative Maintenance Monthly

ISSUE 622

SEPTEMBER 2004
PS Magazine - TB 43-PS-622 - Page 5 of 33
Hook Latch and Housing Assembly
In addition to lubing this assembly, you’ll need to make sure the mounting screws
are nice and tight.
Vibration loosens the screws. If they
break, the ammo door jams as you try
to open or close it. You won’t be doing
any firing either way.
Make it a point to eyeball those
screw heads with a flashlight every
time you check out the ammo doors
and racks. If they’ve backed out or if
they’re loose enough to turn with your
fingers, give your mechanic a heads up.
He’ll add a dab of locking compound, NSN 8030-01-025-1692, to the screws
before re-tightening them.
PS 622
SEP 04
6
M1-Series Tanks…
Keep Ammo Doors Moving
Lubrication
Proper lubrication should be your first priority, since lack of lube will result in a
stuck door almost every time.
A semiannual coat of solid film lubricant (SFL), NSN 9150-01-260-2534, is the
way to go. Wipe away any dirt or grease that’ll keep the SFL from sticking. Then,
give the following areas a good coating:
•
Ammunition doors.
Spray the
door seals, sliding surfaces and
rails.
•
Ready ammunition door.
Spray the four seal retainer cams
and the two rail cams.
•
Stowage ammunition door.
Spray the two door cams.
•
Hook latch.
Use a grease gun to lube the hook latch with WTR, NSN 9150-00-
935-5851.
•
Hook latch and housing assembly.
Spray all moving and touching parts.
•
Latches.
Spray the sliding surfaces of all latches.
•
Ammunition tubes.
Spray the inside surfaces and
all rubber stops inside the
ammunition tubes with SFL.
That allows ammo to slide in
and seat properly so that it
does not hit the ammo doors.
Do your
ammo door
PM
now,
and you
won’t have
any regrets
later.
Wipe rails clean before spraying with SFL
Rubber stops
and interior
of ammo
tubes need
lube, too
Loose screws break off
and jam ammo doors
gunner!
tank!
sabot!
I
can’t
get the
ammo door
open!
I know
what you
mean.
..
waita-
minit, why
‘today’?
I didn’t get a
chance to get
to the Ammo
Door PM.
Hope
nothing
happens
today…
Tankers, a
jammed ammo
door
is high up on
the list of
“Things
you don’t want to
have happen on the
battlefield.”
622.06-07(C)
7/30/04
4:19 PM
Page 1
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