PS Magazine - TB 43-PS-683
PS, The Preventative Maintenance Monthly
ISSUE 683
OCTOBER 2009
34
PS 683
OCT 09
35
PS 683
OCT 09
PS 683
34
OCT 09
This is important because the shock absorber vent valve must be either opened or
closed based on temperature conditions. Not following proper TM procedures could
put your bird in harm’s way whether operating rotors in flight or on the ground.
When temperatures are below 0°F, the shock absorber vent valve
must
be open.
When temperatures are above 30°F the valve
must
be closed. Between 0°F and 30°F
the vent valve can be either open or closed.
Here’s the sticking point. The vent valve has a ±lter screen to keep trash out of
the valve. This screen must be kept clean and free of trash. Because this screen is
covered by a bracket, trash or dirt can accumulate on the screen without being seen.
The bracket must be removed to see the screen.
CH-47D/F…
mechanics, when your chinooks
encounter bad weather, follow
all the good words in section
vII in chapter 5 and section v in
chapter 8 of tm 1-1520-240-10.
it’s so-o
cold!
I sure
am glad
my shock
absorber
vent valve
was opened
before I
took off…
… and Someone
did a good job
cleaning my vent
valve, too!
accidents and
mishaps are
not
dreams but
a
reality…
if you
take maintenance
for granted.
you create
maintenance
nightmares
when
you don’t take care
of your equipment.
that’s reality.
a
real
accident
is one you may not
wake Up from! we
have the world’s
best equipment, But
it’s your business
to do pm.
the age-old question
still resonates:
would you stake
your life on the
condition of your
equipment?
683.34-35.indd
1-2
8/25/09
2:11:56 PM
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