PS Magazine - TB 43-PS-623
PS, The Preventative Maintenance Monthly
ISSUE 623
OCTOBER 2004
B
efore you hop in the cab of your small emplacement excavator, take a look at the
spare tire mount carrier. Make sure the tire (wheel assembly) is secured in place.
A loose tire will roll out of the carrier when the vehicle is moving and takes
a turn.
Weighing in at 170 pounds, the tire
could damage another vehicle, cause an
accident, or worse yet . . . kill someone.
So before operations, make sure the
vehicle’s spare tire is held in place with
the carrier mount’s tire holder. You’ll
see the holder inside the spare tire’s
driver’s side of the cab.
Replace a missing holder with NSN
2590-01-242-6712. It’s shown as Item
5 in Fig 186 of TM 5-2420-224-24P-1.
Is spare tire bolted in place?
A
few mechanics are too clever by half.
They think the breather valve on the winch’s
gearbox is a grease fitting. When they pump
grease into the valve, guess what happens…
NOTHING!
But here’s the problem. A well-meaning
mechanic replaces the valve with a new
grease fitting. The end result is that grease
gets pumped in the gearbox where it doesn’t
belong.
And there’s
another problem
here—not using
the LO! The
breather valve is
not called out as
a lube point, so
a
mechanic
shouldn’t
be
looking for a
grease
fitting
there anyway!
PS 623
OCT 04
23
SEE…
PS 623
OCT 04
22
DEUCE…
So
first
things
first…
hmm…
that
looks
like a grease
fitting!
No grease
on winch
breather
valve
• If there’s a grease fitting where it
doesn’t belong, remove it and replace
it with the breather valve, NSN 3040-
01-476-5018.
• You need to change the oil (if it’s
contaminated with grease) in the gear-
box. So move the winch clutch lever (2)
to DISCONNECT, and rotate the winch
spool until the check/fill plug (1) is hor-
izontal, at the 3 o’clock position.
• Remove the check/fill plug.
• Rotate the spool until the check/fill plug is
facing down. Drain the oil into an approved
hazardous waste container. Never dump it
down a drain or on the ground.
• Rotate the spool so the check/fill plug is
horizontal. Add oil until the level reaches the
bottom of the check/fill hole. Use the correct
oil shown on Page 103 of TM 5-2430-200-10,
depending on the temperature.
• Reinstall the check/fill plug.
623.22-23(C)
8/27/04
3:41 PM
Page 1
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