PS Magazine - TB 43-PS-605

PS, The Preventative Maintenance Monthly

ISSUE 605

APRIL 2003
PS Magazine - TB 43-PS-605 - Page 8 of 33
PS 605
APR 03
13
M113-Series FOV…
Filter Out
Fuel Filter
Problems
Filter Out
Fuel Filter
Problems
PS 605
APR 03
12
M2A2/M3A2 Bradleys…
I
nstalling the armor tile brush guards on an M2A2/M3A2 Bradley doesn’t seem like
a hard job, mechanics. After all, the threaded holes were pre-drilled in the Bradley’s
skirts during production.
Problem is, those holes weren’t protected very well after being drilled. Plastic
plugs inserted to keep the threads from corroding didn’t work.
Replacing the inserts with setscrews didn’t work either. The corrosion problem
continued.
Now you face the difficult task of peeling out the plastic inserts or drilling out
stuck setscrews.
Don’t put it off, though. The longer the inserts and setscrews stay in place, the
worse corrosion gets.
Once they’re out, replace each insert and setscrew with a bolt, NSN 5305-00-724-
7219, and lockwasher, NSN 5310-00-820-6653. Apply some antiseize compound,
NSN 8030-00-597-5367, to the threads before installing the bolt. That puts a stop to
the corrosion and makes removal a little easier.
C
rewmen, if you’re not willing to drain the fuel filters daily on your M113-series
carriers, you’ll have to suffer the consequences, namely a loss of fuel flow.
If sediment isn’t cleaned out, it builds up and creates a plug in the bottom of the
fuel filter. Water from condensation leads to rust inside the filter canister. Rust is just
another form of sediment that puts a stop to fuel flow.
So stay out of trouble by draining both the primary and secondary fuel filter after
every operation. Here’s how:
1.
Remove the rear engine com-
partment access panels on
M113A2 carriers. For M113A3’s,
you’ll need to remove the driver’s
engine access panel.
1.
Place a container under the pri-
mary fuel filter.
2.
Slowly turn the draincock to
open the valve.
3.
Let water and sediment drain
into the container until the fuel
runs clear. Close the draincock.
4.
Repeat steps 1 through 3 for
the secondary fuel filter.
You can still run into trouble with M113A2s, even if you drain the filters daily.
Since the filters sit at an angle, a draincock that sits on the high side of the canis-
ter’s bottom will not allow all of the water and sediment to drain.
If that’s the case, have your mechanic turn the canister so that the draincock is
positioned at the lowest point of the canister. While you’re at it, make sure your
mechanic changes the fuel filters every 1,500 miles or semiannually, whichever
comes first. That keeps the fuel flowing, too.
it’s time to
install your
new armor
tile brush
guards!
I hope you
brought a
lot of
elbow
grease!
the set-
screws in my
brush guard
holes are
rusted
solid!
we wouldn’t be
so
stopped up
if
we’d been drained
properly!
do’t
I no
id!
Drain both fuel filters after every operation
Replace plastic plugs…
…and setscrews…
…with
bolts and
lock washers
605. 12-13 (C)
3/3/03
12:51 PM
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