PS Magazine - TB 43-PS-596
PS, The Preventative Maintenance Monthly
ISSUE 596
JULY 2002
UH-60A/L…
this
positioner
tool
is
working
my nerves better
than it is this
filter sleeve!
here, try
this
new
positioner
tool on it.
…it won’t
take a lot
of muscle
work!
Here are the materials
and dimensions an AVIM
shop can use to make the
tool:
Once the tool is made
and you’ve removed the
bolts holding the filter
assembly to the main gear
box sump like the TM
says, slide the new tool
onto the filter bowl.
Make sure the position-
er tool pins go through the
bolt holes of the filter
bowl and sleeve. Then
insert a
1
/
2
-in drive pull
handle into the opening on
the tool and rotate the
sleeve assembly clockwise
to the OFF position and
remove the housing.
Follow the rest of the
procedure in Para 6-4-
18-1.
David Leak
Ft Rucker AL
.
21
21
°
5.875"
5.875"
3.105r
3.105r
2.375r
2.375r
21
°
27
°
.250
Dia.
.250
Dia.
5.875"
.500"
.380"
.400"
.244"
.250"
2.025r
3.105r
2.46r
2.77r
2.397r
.500 O.D.
.506
.506
.350 Dia.
.250 Dia.
21
°
27
°
45
°
Note 7
Note 5
From the desk
of the
Editor
Great idea! Looks like this
new tool will be more user
friendly and easier to use.
1.
MAKE FROM TOOL STEEL, CONDITION N (MIL-S-18729)
2.
BREAK ALL SHARP EDGES 0.005-0.015”
3.
TOLERANCES UNLESS OTHERWISE NOTED ±0.005
4.
TO ENHANCE HEAT DURABILITY, HEAT TREAT AFTER
MACHINING TO ROCKWELL C26-33, per MIL-4-6875
5.
MAKE TWO
1
∕
4
”-28 UNF, GRADE 8, x 1.000” LONG BOLT
OR EQUIVALENT
6.
IDENTIFY TOOL, OIL FILTER FLOW VALVE POSITIONER,
AS PER MIL-STD-130
7.
MAKE FROM
1
∕
2
TUBE STEEL 0.65” LONG PRESS FIT AND SEAL
Dear Windy,
Our mechanics had a tough
time
repositioning
the
main
transmission oil filter sleeve
using the positioner tool called
for in Para 6-4-18 of TM 1-
1520-237-4.
It takes a lot of muscle to turn
the tool, so sometimes a hammer
and punch is used to reposition
the sleeve to shut off the flow
before changing the filter. That
can damage the filter sleeve tang
area. If the sleeve was previous-
ly damaged, the positioner won’t
work at all.
Mechanics can end up with
busted knuckles, cuts and abra-
sions using the tool. The punch
and hammer can lead to depot
level repairs to replace the filter
sleeve and the transmission. The
end result is costly downtime and
reduced operational readiness.
We’ve come up with a new
positioner tool that prevents
damage to mechanics’ hands,
and safeguards the filter sleeve
and the transmission sump case.
It cuts the time needed to
change the transmission oil filter
by 50 percent. The tool even
works on the sleeve if the tang
area was damaged previously
during a filter change.
PS 596
JULY 02
37
When changing
transmission oil
filter…
…use new
positioner
tool on oil
filter sleeve…
…and forget
this old tool
not only
will it
save your
knuckles…
596. 36-37 (C)
6/1/02
11:48 AM
Page 1
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