PS Magazine - TB 43-PS-633
PS, The Preventative Maintenance Monthly
ISSUE 633
AUGUST 2005
PS 633
AUG 05
54
22-Ton Crane…
it’s time to
hoist up on
these pm
problems!
Use handholds,
not joysticks
Use the Handholds
The crane’s swing/auxiliary hoist
control lever, known as the joystick, is
no handhold for climbing into and out
of the cab.
The joystick is not strong enough to
support your weight. A busted joystick
puts your crane out of action until a new
one is installed. With that new joystick
comes a $140 bill!
Instead, use the handholds attached to
either side of the cab door.
Use Stowage Box
Remind yourself to do some housekeeping after the day’s run.
That is, never leave the crane’s lifting
slings, cables, chains or pile drive attach-
ments on the vehicle’s superstructure
when you’re done with them. Anything
left behind can get lost when the crane
moves, or cause you to slip and fall off
the vehicle.
Put the items where they belong—in
the stowage box next to the cab carrier—
so they’re out of the way, won’t get lost,
and you’ll know where to find them.
Hook Block Lube
put your
slings,
cables,
and chains
in my
stowage
box.
Operators,
hoist up these
PM pointers
before
the
day’s run.
Your
22-ton
crane will
be
glad
you did.
Grease Fitting Caps
What’s a good idea? How ‘bout using protective caps on the hook block’s grease
fittings?
These caps keep the fittings clean and unclogged. It’s easier to take the cap off
when it’s time to lube than it is to replace the fittings because they won’t take grease.
You can order protective caps with NSN 4730-00-289-8148.
Without lube, the block’s sheaves,
trunnion and thrust bearings can seize
up. That causes excessive wear and tear
on the crane hoist cables and hook
block sheaves.
For smooth crane operation, lube the
hook block with GAA monthly or every
100 hours like it says on Page 1-4-9 of
TM 5-3810-307-24-1-1.
Four
grease
fittings on
the crane
get over-
looked
because
they’re on
me
—the
hook
block.
633.54-55(C).qxd
7/2/05
11:26 AM
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