PS Magazine - TB 43-PS-678
PS, The Preventative Maintenance Monthly
ISSUE 678
MAY 2009
14
PS 678
MAY 09
15
PS 678
MAY 09
D
rivers, the load handling system (LHS) hook arm on your PLS or HEMTT won’t
be grabbing many loads if you don’t keep its pin, NSN 5315-01-361-2721, lubed.
Some of those pins are going unlubed so long that they have to be removed with a
sledgehammer!
Just lube the pin according
to App G in TM 9-2320-364-
10 (Nov 05) and Page 3-2 of
TM 9-2320-304-14&P (Aug
00 w/Ch 1, Sep 01). That
means
removing
the
pin,
cleaning it, and giving it a coat
of antiseize compound every
1,500 miles or semiannually,
whichever comes Frst.
H
ard or erratic steering usually means the grease fttings on the 5-ton’s steering gear
shaFt need lube.
These fttings are overlooked. Especially overlooked is the one at the U-joint under the
steering pump’s protective box.
So make sure each ftting gets Four or fve shots oF grease during scheduled service.
Before reinstalling the pin, eyeball the flat washer, NSN 5310-01-216-2799, and
safety pin, NSN 5315-01-355-3744, that hold it in place. Replace them if they’re
missing or damaged.
Then, make sure you use a bore brush to clean out the bore where the pin goes.
If you don’t, all that old antiseize compound, along with any dirt and sand that has
collected, will still be there. That newly lubricated pin won’t last very long.
NSN 8030-
Container Size
1
/
4
-lb
1
/
2
-lb
1-lb
2
1
/
2
-lb
5-lb
00-059-2761
01-087-8254
00-251-3980
00-597-5367
00-286-5453
PLS, HEMTT…
Put a STOP to Rubbing Tires
antiseize
compound
comes in
various sized
containers,
so order
what you
need from
this list…
Coat pin with antiseize compound beFore reinstalling
I hope they
don’t plan on
using me to
lift anything!
my hook
arm pin is
completely
seized up!
M939/A1/A2-Series Trucks…
Steering Gear Shaft Lube
Stuck Pin
Won’t
Pivot
Remove protective cover…
…then lube
steering box
U-joint…
…steering shaFt…
…and U-joint
behind air intake
before you climb
in your hemtt and
head out for the
day’s run, take a
look at the inside
of the front tires.
see any
wear
marks?
if so,
report
it.
Front tires that rub
against the frame or
equalizer beam during
turns can eventually
wear enough to cause
a blowout.
it’s time for a wheel
adjustment. Have your
mechanic adjust the
turn stop bolts to keep
the tires from hitting
anything during turns.
HEMTT…
678.14-15.indd
1-2
3/23/09
4:32:17 PM
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