PS Magazine - TB 43-PS-559
PS, The Preventative Maintenance Monthly
ISSUE 559
JUNE 1999
PS 559
37
JUN 99
PS 559
36
JUN 99
the
b1 mechanical maintenance
platform
, nsn 1730-00-529-6235, helps
you do the pm on your birds. but the b1
needs pm,
too
, so pay
close attention
to these
details
...
The jackscrew should be checked for
cracks in the bellows, grinding noise
in operation or binding due to no
lubrication.
Make sure the lunette assembly isn’t
badly bent, cracked or missing
pieces—like the steering pin, tie rods,
detent pins, or the tongue.
Same goes for the handwheel. Check
it for a broken collapsible handle,
grinding, or binding.
Check the static
discharge reel
for missing
alligator clips
and frayed or
damaged static
wire. Make sure
the wheel turns
freely.
Make sure the two immobilizing jacks
are working right. Set the foot pedals
on the jacks so the platform doesn’t
move when the jacks are in place. If
foot pressure doesn’t easily set the
jack pads, grease the pivot points.
You can replace the bearings and
seals in each platform’s wheels
instead of replacing an entire wheel.
Replace the outer wheel bearing with
NSN 3110-00-159-1631 and the inner
bearing with NSN 3110-00-198-2169.
A new grease seal comes with NSN
(Order on a DD
Form 1348-6 and add “NSN not on
AMDF” in the REMARKS block.)
Reinforce the platform railing by
taping the end rail to the two side
rails. Use a strong tape—some units
prefer duct tape, NSN 5640-00-103-
2254.
Make sure the platform wheels and
casters are lubed with GAA every six
months or 600 hours like it says in
TM 55-1730-223-13.
Make sure all the platform’s parts are
in place. Repair or replace any
corroded, cracked, bent or missing
parts on the frame, handrails, steps
and platform.
Check the wheel assembly for worn-
out swivel lock pins, bad brakes,
failing brake set levers and a poorly
working wheel jack ratchet.
Check tires for good tread. Make sure
they have no deep cuts.
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