PS Magazine - TB 43-PS-667
PS, The Preventative Maintenance Monthly
ISSUE 667
JUNE 2008
54
PS 667
JUNE 08
55
PS 667
JUNE 08
The lines are held in place
by a retaining strap that keeps
them snug against the wall.
Straps get misplaced when
a hydraulic line is repaired, or
when the engine is removed
by support. How it happens
makes
no
difference.
An
earthmover that’s operating
with a missing strap means
those hydraulic lines will
eventually rub up against the
engine’s exhaust manifold—
causing a Fre!
Replace a missing retaining
strap with NSN 5340-01-
179-7530, or secure the lines
with a tie-down strap, NSN
5975-00-570-9598, until the
retaining strap is replaced.
Retaining straps are shown as
Item 40 in ±ig 140 of TM 5-
2350-262-24P.
1.
Start the engine to keep the
suspension charged.
2.
Shift to SPRUNG mode and
reverse (R1). Drive at max speed for
about 50 feet on a hard, level surface.
3.
Shift into neutral and coast to
a stop without using the brakes or
turning the steering wheel.
4.
Do not set the parking brake.
5.
Let the engine idle at 750-850 rpm for Fve minutes. Doing this maintains
hydraulic pressure and lets the vehicle settle completely.
6.
Eyeball each track at the No. 3 and No.
4 road wheels (from the front of the vehicle).
The track should just touch the No. 3 road
wheel and be about two Fnger widths or
1
1
/
4
to 2 inches above the top of the No. 4
road wheel.
If track adjustment is needed, follow the
info on Page 3-26 of TM 5-2350-262-10.
Remember, the ACE should be placed in the
SPRUNG mode—not UNSPRUNG—before
making the track adjustment.
Misplaced
Strap
M9 ACE…
Two Fingers Will Do
mechanics, where
there’s
smoke,
there’s
fire!
keep that in mind when it comes
to the five hydraulic lines
mounted directly across from
the engine’s exhaust manifold.
Strap keeps
hydraulic
lines in
place
Look for lines rubbing
on exhaust manifold
working in the mud
or knee-deep in
the sand is no time
for track tension
problems on your
earthmover.
here’s a quick
way to tell if the
track is loose
before you head
out of the
motor pool…
Coast to a stop in NEUTRAL
Use two Fngers to measure tension
hey
buddy,
why so
tense?
that’s the problem…
I’m
not
tense! Now
I’m working in the
mud!!
M9 ACE…
667.54-55.indd
1-2
5/5/08
6:27:48 PM
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