PS Magazine - TB 43-PS-616
PS, The Preventative Maintenance Monthly
ISSUE 616
MARCH 2004
D7G Tractor…
M
echanics, metal shavings in the trans-
mission oil is the last thing your dozer
needs for smooth operation.
Contaminated oil with metal shavings
will clog the screen in the transmission sys-
tem’s magnetic strainer. A clogged screen
restricts oil flow. The end result is wear and
tear on the dozer’s engine and transmis-
sion, not to mention a bad AOAP report!
So after changing the transmission’s
primary filter, don’t forget about the mag-
netic strainer.
Cleaning the screen and magnets is a
250-hr service in LO 5-2410-237-12.
1.
Remove the cover and spring,
then remove the filter assembly.
2.
If you’re in the motor pool,
steam clean the screen mag-
nets, and then dry them with
pressurized air. In the field,
wash the screen in MIL-PRF-
680 cleaning compound.
Clean the magnets with a stiff
bristle brush.
Don’t use a
wire brush!
That can scratch
or demagnetize them. And
don’t drop or tap magnets.
That can demagnetize or
break them.
3.
Check the cover seal for
cracks, tears or mashed edges.
If you find any, replace the
seal, NSN 5331-00-863-5549.
4.
Install the magnets, screen, spring and cover, in that order. Torque the cover nuts
to 31-34 lb-ft dry (no oil) or 23-25 lb-ft wet (threads lubed with oil).
5.
With the engine running and the transmission in neutral, pull the dipstick to meas-
ure the oil level. Add oil to bring it to the FULL mark on the dipstick.
Here’s
what to
do…
Remove
cover…
Wash screen and magnets
…and filter
assembly
And your evil
scheme would've
worked, too, if
not for good PM
and this magnetic
strainer!
rats!
I,
magnet
man,
thought I could
bring this tractor to a
standstill by putting
metal shavings
into
its transmission oil!
Replace
worn seal
616. 22-23 (C)
1/25/04
11:35 AM
Page 1
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