PS Magazine - TB 43-PS-564
PS, The Preventative Maintenance Monthly
ISSUE 564
NOVEMBER 1999
D7G Tractor . . .
Enough Edge?
O
perators, the maintenance check on the D7G dozer’s moldboard cutting edge
is often overlooked. That’s because the blade is usually sitting in the dirt at the
work site.
The cutting edge protects the moldboard. If the edge wears down too far, the
moldboard is damaged and the blade has to be replaced or sent to DS for repair.
That means big bucks.
So, always clear away the dirt or
mud to eyeball your dozer’s mold-
board. If the edge is worn to less than
3
/
4
inch—that’s about the diameter of
a penny—report it.
Your mechanic can reverse the edge
or replace it if it can’t be reversed.
echanics, before you disconnect the ACE’s
ejector hydraulic cylinder, make sure you have
straps, rope and a jack-
stand to support it.
If you don’t support the
325-lb cylinder, chances
are it will drop—
damaging the steer unit
shifting splines, and
possibly injuring you.
As always, follow the
word on Pages 4-290
through 4-295 of TM 5-
2350-262-20-1 to remove
and install the cylinder.
M9 Armored Combat Earthmover . . .
130G Grader . . .
give the
injector cylinder
the
support
it needs.
Moldboard’s
cutting edge
Use penny to measure wear
Blade
3
/
4
"
Lower dolly to protect rods
Support cylinder
before disconnecting
PS 564
25
NOV 99
PS 564
24
NOV 99
M720, M832, M840 Dolly Sets . . .
Protect Your Dolly
D
rivers, lower your transportable shelter’s dolly set when you’re not using it.
Lowering the dolly retracts the lift jack cylinder rods which:
q
Protects the rods from the elements and prevents corrosion
q
Solves the frozen lifting
jack problem because you
just pump ’em and let the
hydraulic pressure break
’em loose
q
Pushes hydraulic
fluid back into the
reservoir, which leaves
less room for air, thus
reducing condensation
in the tank
q
Tilts the pump so
that water runs off
instead of seeping inside.
perators, never use your 130G grader’s hand throttle like a cruise control.
Unlike the cruise
control on your POV,
the hand throttle
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 the hand
throttle. The end
result is loss of
control.
Use the hand
throttle only for non-
driving operations,
like moving the
blade.
HEY, PAL,
i'm
NOT
A
CRUISE
CONTROL
!
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