PS Magazine - TB 43-PS-556
PS, The Preventative Maintenance Monthly
ISSUE 556
MARCH 1999
PS 556
9
MAR 99
PS 556
8
MAR 99
ried paint is a big killer of hydrau-
lic cylinder seals.
Most paint gets on cylinder rods be-
cause somebody didn’t mask the rods
before the equipment went to the paint
shop. As the rod extends and retracts,
the paint tears at the seal.
Hydraulic Cylinders . . .
Be careful to keep the stripper off
non-metal surfaces, such as plastic and
rubber, where it may cause damage.
Dear Half-Mast,
Our unit recently switched fuels, from DF-2 to JP-8. Since then, the
engines on our equipment run rough and stall out. What can we do
about it? Is JP-8 the reason?
SGT M.W.
Dear Sergeant M.W.,
Probably. JP-8 is a kerosene-based fuel that breaks gunk and contaminants free
from the sides of the fuel tank and lines. Those contaminants are filter cloggers.
So, when you first switch a vehicle to JP-8, pay close attention to engine
performance. Replace the fuel filter when the engine starts to idle rough or run
rough. It’s clogging up, but this clogging should stop after two or three filter
changes.
JP-8 won’t damage the engine. And you don’t have to add any lubricating
help—like engine oil, brake fluid or transmission fluid—to the fuel. That will just
clog the filter more and reduce engine performance.
Qty
NSN 8010-00-
1 pint
142-9273
1 gallon
181-7568
5 gallons
926-1488
55 gallons
926-1489
But even if you were on the ball and
masked the rod, some overspray can
get on it. Between the heavy paint or
overspray, seals are ruined and begin
to leak.
To remove paint from cylinder rods
after a trip to the paint shop, use epoxy
and polyurethane paint stripper. Here
are available quantities and NSNs:
ouch!
there goes my
seal
!
you tell
'em
, master
sergeant!
Paint from unmasked rods ruins seals
PS 556
9
MAR 99
PS 556
8
MAR 99
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