PS Magazine - TB 43-PS-593
PS, The Preventative Maintenance Monthly
ISSUE 593
APRIL 2002
PS 593
APR 02
19
130G Grader…
A
few operators have learned the hard
way that the grader’s governor control
handle is not a cruise control.
Unlike the cruise control on your
POV, the grader’s governor control
doesn’t cut off when you hit the brakes.
If you need to stop in a hurry, you
won’t have time to mess with it. The
end result will likely be loss of control.
Use the governor control handle
only for non-driving operations, like
moving the blade.
M109A6 Paladin…
P
utting a brand-new weather curtain, NSN 1025-01-055-2786, on the Paladin’s gun
is wasted effort unless you do it the right way, mechanics.
If you get it wrong, the curtain wads up and gets pinched against the gun stop
when the tube is elevated. A torn curtain has to be replaced again.
You’ll find assembly instructions for the weather curtain in Para 4-18c of TM 9-
2350-314-20-2-1. Pay special attention to Step 13. It says to wind the right curtain
bracket, NSN 5340-01-055-2787, four turns counterclockwise before fastening it to
the curtain support bracket.
Those turns put exactly the right amount of tension on the weather curtain and
allow it to roll up and down like a window shade when the gun is elevated and
depressed.
Dirt and rust that build up on the curtain’s shaft, NSN 3040-01-144-9462, can
also spell curtains for the curtain. So wipe away any dirt that collects and apply a
few drops of OE/HDO-30 to the shaft’s bushings. That’ll keep the shaft from jam-
ming and tearing the curtain.
Wadded-up
weather
curtain…
…gets
pinched
and torn
well, that takes
care of your new
weather curtain!
Oww!
You don’t
know the
half of it!
SEE…
Too
Much
or
Too
Little?
T
he grease fitting that lubes the excavator’s front and rear drive shaft thrust ball
joints can’t win for losing.
At lube time, it seems that the fitting is
either overlooked completely or gets too
much grease.
It gets overlooked because it’s directly
under the middle of the vehicle. You have
to crawl under the excavator to find it. Left
unlubed, friction will KO the ball joints.
When it’s time to lube, read and heed
the CAUTION in Note 18 of LO 5-2420-
224-12. Give the fitting four to five pumps
of lube from a hand-held grease gun.
Pumping in too much lube will split
open the ball joint’s rubber torsion boot. A split boot lets lube leak out and water get
in. No lube leads to friction that ruins ball joints. Water rusts them.
Lube thrust
ball joint
Don’t
use
me like your
pOV’s cruise
control!
No Cruise Control!
593. 18-19 (C)
3/1/02
3:33 PM
Page 1
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