PS Magazine - TB 43-PS-588
PS, The Preventative Maintenance Monthly
ISSUE 588
NOVEMBER 2001
PS 588
NOV 01
39
CH-47D…
I
f you repairers don’t keep your Chinook forward and aft uniball surfaces clean,
smooth, and free of grease, friction can lock up the flight controls. That means you
might see the ground sooner than you expect. So crank up the APU and move the
flight control thrust lever to expose the uniballs. Inspect, clean and repair them like
it says in Task 5-123.1 of TM 55-1520-240-23-4.
Go easy when you grease the
swashplates. If excess grease gets on
the uniballs, it acts like a magnet for
grit and dirt that can scratch, nick,
bind or cause pitting of the uniballs.
That increases uniball friction and
leads to failure.
Clean uniballs last longer and
only need replacing when they’re
out of tolerance. So keep ‘em clean.
Keep uniballs
free of grease
I’m
ready
to go!
Get your avionics
shop to fix broken
connectors with
these instructions.
they’re from
FM 11-487-2/14,
Standard
Installation Practices:
RF Connectors
and Cables.
1.
Disassemble connector and lay out parts as shown.
2.
Cut cable off square on end.
Do not deform. Cut jacket and
braid to dimension shown. Do
not nick dielectric.
3.
Slide nut over jacket and push
back out of way. Slide clamp over
dielectric under braid. Push firmly
until clamp is flush with braid.
6.
Insert cable assembly into
connector (either jack or plug).
Push firmly into place. After
nut is started, tighten with
torque wrench 9 to 11 in-lbs.
4.
Trim dielectric and
center as shown.
5.
Solder contact on center conductor.
Remove excess solder. Do not overheat.
center
conductor
jacket
nut
clamp
contact
body
jack
plug
jacket
7/32”
dielectric
braid
1/32”
1/16”
3/32”
Well, I’m
not
taking
off any-
where…
…not until
you get the
grease
off
my uniballs
NOTE: All dimensions are in inches.
588. 36-39 (C)
9/30/01
5:11 PM
Page 3
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