PS Magazine - TB 43-PS-704
PS, The Preventative Maintenance Monthly
ISSUE 704
JULY 2011
25
PS 704
JUL 11
I
f you’re being rubbed the wrong way, taking action is a natural response.
So, mechanics, before the 30mm turret’s braided hydraulic hoses on your AH-64A/D rub
together or get caught in the flex chute, you should take action to prevent hose damage.
Chafing occurs when the hoses rub together or against the wire strike or flex chute.
Hydraulic hoses get damaged in the flex chute because they are not routed and adjusted
correctly. Aircraft vibration and gun recoil can cause chafing and holes in the hoses. If they
have too much slack and get tangled in the flex chute, they’ll be torn apart.
Damaged hoses mean your gun is NMC because of lost elevation control.
Make sure the lines are installed correctly like it says in Para 4-7-47 and 4-7-48 of TM
9-1090-208-23-1-1. This will ensure that they will not touch the wire strike or be too close
to the flex chute when the gun is firing.
Improper
clocking
of
the
45° angle fitting on the turret
actuator can result in hydraulic
hose contact or entanglement
with the flex chute. Hydraulic
hoses with a 45° bend should
be installed with the plane of
the elbow 90° to the plane of
the
actuator.
When
installing
these hydraulic lines, maintainers
should ensure that the bottom of
the hose bumper is 13½ ± ¼ inch
from the end of the hose nut. The 13½ inch measurement should be measured along the
length of the lower (return) hydraulic line. This measurement should be made from the
edge of the nut nearest the actuator to the closest edge of the hose bumper. The upper
(feed) line should be positioned parallel to the return line. Improper location of the hose
bumper can also result in hydraulic hose contact or entanglement with the flex chute.
Teflon insulating sleeving can be removed in the area covered by the hose bumper;
however there should be no braided line showing. Remember, proper installation of
the hydraulic hoses and hose bumper will prevent contact and entanglement with the
flex chute.
M
echanics, your support maintenance personnel are not mind readers. The word
INOP written in the remarks column on the green tag, DD Form 1577-2, lets them
know that the item is not working but it gives no clues to what’s wrong with the item.
To prevent delays in repair or replacement of turned-in components, make sure
you ±ll out the green tag with complete information describing the problem.
When you turn in an aircraft component with little or no information about the
problem, the component could get returned to you—without repair.
So remember, turn-around time
for
getting
repaired
components
back depends on your making sure
every necessary block on the green
tag has correct, complete and legible
information. INOP, in the remarks
column, means nothing to the ASC
shop because it doesn’t describe
what’s not working in what situation.
Describe
in
exact
detail
what’s
wrong with the component.
UNSERVICEABLE (REPARABLE)
TAG-MATERIEL
DD FORM 1577-2
INSPECTION ACTIVITY
REASON OR REPARABLE CONDITION
REMOVED FROM
UNIT OF
ISSUE
SERIAL NO. / LOT NO.
WARNING: Unauthorized persons removing, defacing, or
destroying this tag may be subject to a fine of no more
than $1,000 or imprisonment for not more than one year
or both.
(18 USC 1361)
NSN, PART NO. AND ITEM DESCRIPTION
QUANTITY
CONTRACT OR PURCHASE
ORDER NO.
REMARKS
INSPECTOR'S NAME OR
STAMP AND DATE
CONDITION
CODE
AH-64A/D…
Protect Hydraulic Hoses
All Aircraft…
Incomplete
Condition Code Tag
A complete tag helps support maintenance
Inspect hose
for right angle
when I shoot, I don’t
want my hoses to get
in my flex chute.
don’t worry,
bub! your hoses
won’t
be rubbing
the wrong way!
Great Blade-oni.
..
all these items have
green tags with the
word INOP written on
‘em, so I know they’re
not working.
.. but
I don’t know what’s
wrong with ‘em!
WHADDOI.
WHADDOI?
Huh?
WhaddoI look like?
A
mind-reader?
Send
this back to the
Soldier who sent it
and tell him to give
you more complete
information!!!
704.24-25.indd
1-2
5/26/11
7:25 PM
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