PS Magazine - TB 43-PS-740

PS, The Preventative Maintenance Monthly

ISSUE 740

JULY 2014
PS Magazine - TB 43-PS-740 - Page 15 of 33
26
PS 740
JUL 14
I
f you notice changes in the transmission psi readings on the cockpit display panel during
Black Hawk startups or Fights, you’ll need to troubleshoot the changes using the TM.
±ollowing the troubleshooting steps to ²gure out Fuctuating transmission psi readings
could mean draining the entire system or adjusting or replacing pressure regulators.
Here’s a little maintenance tip that could save you
a lot of work. Before you break out the tools and start
taking off parts to drain and Fush Fuid, check the
²lter inside the transmission oil ²lter sleeve like it says
in WP 0614 of TM 1-1520-280-23 for the M-model. ±or
the A/L model aircraft, use WP 0657 of TM 1-1520-237-
23. Make sure the ²lter is installed as shown in the
TMs. If turned wrong, the ²lter can cause Fuctuations
in the psi readings for the main transmission.
If the ²lter is installed correctly, you’re good to go as long as Fuctuations cease. But if
Fuctuations continue, follow through with troubleshooting.
PM
Neds
a lot
of Thought
Second stage
²lter element
±ilter
bowl
±irst
stage
²lter
element
Packing
Packing
UH-60 Series…
Aircraft Transmission
Readings
Transmission
readings
Fuctuating?
Make sure
²lter inside
sleeve is
installed
correctly
oUr
transmisSion
is
sTiLl
fluctuatiNG!
we neEd to
TroubleShoOt
as sOon as we
Land!
PM
Neds
a lot
of Thought
{sigh}
What is it
this
time, Jackson?
um…
uh… hey,
ah…
My truck’s got
low oil pressure
and not much get
up and go.
Did ‘ya check
the oil dipstick
this morning?
Shoot, Jackson!
don’t you
ever
read your TM?
What for?
it was fine
last night.
AwW, that stuff’s
for
you.
You’re
the
mechanic.
Specialist
Jackson
couldn’t be
more
wrong.
740 26-27.indd
1-2
6/6/14
10:23 AM
Click here for a copy of this article to save or email.
Click here for a copy of this article to save or email.
Back to Top
Back to Top