PS Magazine - TB 43-PS-713

PS, The Preventative Maintenance Monthly

ISSUE 713

APRIL 2012
PS Magazine - TB 43-PS-713 - Page 27 of 33
51
PS 713
APR 12
•± JP-8±fuel±causes±the±rubber±
in±some±bungs±to±swell.±The±
rubber±softens,±cracks,±splits±
and±eventually±leaks.
•± Another±reason±for±leaks±is±that±
bungs±are±sometimes±installed±
too±tightly.±Overtighten±a±bung±
and±you’re±likely±to±crack±and±
split±the±rubber.±Then±you’ve±
created±a±leak.
Installing±a±New±Bung
•±
Make±sure±the±fuel±tank±and±bung±are±clean±and±dry±before±you±install±the±bung.
•±
Put±the±bung±into±the±tank±opening.
•±
Coat±the±threads±of±a±straight±adapter,±NSN±4730-01-387-7158,±with±sealing±compound.
•±
Put±a±flat±washer,±NSN±5310-01-365-8138,±
over±the±bung.
•±
Insert±the±straight±adapter±through±the±
flat±washer±and±into±the±bung.
•±
Tighten±the±adapter±with±a±torque±
wrench±to±40±in-lb.
NSN 8030-00-
Size
849-0071
220-6973
252-3391
656-1426
1
1
/
2
-oz tube
4-oz can
11-oz tube
1-pt can
Tactical Quiet
Generators…
leaks occur
for a couple
of reasons…
when you pull pmcs
on your tactical quiet
generator (tqg), look
for a leak at the fuel
drain’s bung on the
fuel tank.
On the 10-kw
through
60-kw TQGs,
the fuel
drain is
located
on the
skid base.
On the
5-kw, the
fuel drain
is inside the
generator
housing near
the oil drain
valve.
some bungs
tend to leak.
leaks have
been found on
5-kw through
60-kw tqgs.
if you find a leaking
bung,
DO NOT
tighten
it in an effort to stop
the leak.
Chances are, you’ll
split
the rubber
and the entire bung (bushing, washer and
adapter) could fall out of the fuel tank.
Get a replacement bung with NSN 5310-01-595-3536. This is a
new
bung made
especially
for use around fuel tanks, fittings, vents and the like.
it’s made with
nitrile, which stands up to JP-8 fuel; it won’t swell, soften, crack or split!
Then you’ll have a
stream of fuel spilling
out of the tank.
what
do
you
think?
I could
use some
pm
here!
Inspect fuel drain bung for leak
Do You Have
a
Bum Bung
?
An±Assortment±of±
Sealing±Compounds
713 50-51.indd
1-2
3/7/12
5:31 PM
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