PS Magazine - TB 43-PS-606
PS, The Preventative Maintenance Monthly
ISSUE 606
MAY 2003
If you don’t have the
tool, make one. Don’t use
the finger method. Your
finger is not a dipstick,
and you won’t get an
accurate reading by put-
ting your finger into the
plug hole. All you will get
from a finger measure-
ment is a burned finger
from hot grease.
PS 606
MAY 03
38
AH-64A/D…
Always follow the IETM and TM. After your aircraft has been shut down, allow
hot oil and grease to cool and level off. Then add the right amount of oil or grease.
If you add too much oil in the No. 1 or 2 nose gearbox, the excess oil will blow
through the breathers and leave an oily mess to wipe up in the engine area.
Remember, eyeball the nose gearbox sight glasses and add the right amount, like
your IETM and TM say.
Too much grease in the intermediate or tail rotor gear boxes can blow out seals and
deadline your bird. Then AVIM will have to replace bad seals.
To avoid overfilling the intermediate and tail rotor gear boxes, check the level with
the service tool, PN 2807, described in your IETM or in Figure D-462 of TM 1-
1520-238-23-9 for the A-model.
Mechanics, when
it’s time to service
your Longbow or
Apache drive shaft
components…
…don’t
overfill
or underfill the
gearboxes with
oil and grease.
…no
excess oil
or grease.
{whew!}
that’s a
load off
my mind!
Eyeball sight glass
for proper oil level
what’s the
matter with
jonesey’s
finger?
he kept
using it
as a dip-
stick.
If you see excess grease here,
internal seals could be bad
Too much grease in tail rotor
could cause bad seal
OK, your
gearboxes
check out
good…
Don’t overfill nose
gear boxes…
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