PS Magazine - TB 43-PS-623
PS, The Preventative Maintenance Monthly
ISSUE 623
OCTOBER 2004
W
hen going topside on your Black Hawk to do rotor head maintenance, the APU
vent screens take a beating from feet.
Some mechanics pay little attention to where they place their big feet. Then the
vent screens suffer cracks, breaks, and bends from being stepped on with their full
weight.
Sometimes it’s hard not to step on vent screens and mangle them. So here’s what
to do to cut down on damage. Make some vent screen covers.
Another solution is to stencil
NO STEP
on the screen as a reminder. Others sug-
gest painting the screens but aircraft painting TM 55-1500-345-23 does not allow
you to paint your bird’s vent screens. So watch your step.
.500" DIA
78 Places
8.5"
.250" DIA
14 Places
MATERIAL 7075T6, t = .063"
9"
Drill to fit
original
7.25"
1.
Remove one of
the vent screens.
2.
Trace its shape and each vent and screw hole on a sheet
of .063-in aluminum alloy, NSN 9535-01-186-1347 for one
screen. Then flip-flop and repeat it for the other screen.
3.
Get your sheet metal shop to cut out the covers and
drill holes like so
PS 623
OCT 04
35
HH-60L/UH-60A/L…
watch
that boot,
big foot!
“inspect fuel hoses for cuts,
wear, punctures and leaks. look
for leaks from the fuel can, the
gravity feed adapter and the
quick disconnect fittings. keep
the quick disconnects clean.”
“heaters must
always
be
attended. keep a fireguard
on duty in shifts. the guard
should be trained in alarm
procedures, the use of fire
extinguishers and recognizing
signs of co poisoning.”
for your own health, always
do the by-the-book pmcs
before
using your heater.
follow the safety rules.
they’re your best defense
against
fire
and
carbon
monoxide poisoning.
stay warm,
fellas.
that vent
screen can’t
take your
weight!
623.34-35(C)
8/30/04
4:50 PM
Page 1
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