PS Magazine - TB 43-PS-590
PS, The Preventative Maintenance Monthly
ISSUE 590
JANUARY 2002
8
JAN 02
If you don’t, the LHS’ hook arm will start sticking. Eventually it won’t do any
lifting at all.
PS 590
JAN 02
9
LACK OF LUBE BREAKS ARMS
H
ere’s your proof, crewmen, that lack of
lube causes real problems—and puts your
PLS down for repairs.
Middle frame shaft cylinder locking arms
are breaking on the load handling system
(LHS). Reason? Lack of lube on the cylinder
bushings is causing them to seize. When they
seize, the locking arms break as they try to
turn with the movement of the LHS.
Broken locking arms deadline your truck,
according to Change 2 to TM 9-2320-364-10.
The truck has to go to DS for repair and to
have the mainframe boss inspected for wear.
Damage to the arms prompted the head-
shed to update the PMCS, too. Change 2 will
make Item 39 to say this:
Check LHS for loose, damaged or miss-
ing parts. Any missing or damaged parts
make the truck NMC.
M1074/M1075 PLS…
Lube LHS
By the Book
A
ppendix G of TM 9-2320-364-10 says to lube the load handling system (LHS)
on your M1074/M1075 PLS. That means all
12
grease fittings on Page G-10.
Sure, it’s easy to lube the fittings that are in plain sight, but do you take the time
to raise the hook arm and lube the ones that are harder to get to?
Hook arm cylinder pivot pin (front)
Main cylinder pins
Hook arm cylinder pivot pin (rear)
Hook arm pivot pin (rear)
Main cylinder pivot pin (rear)
Middle frame pivot pin (rear)
2
2
2
2
2
2
s 2
n
ivot
Lube Points
# of
fittings
Some LHS
lube points
are easy to
get to…
…while
others
require
lifting the
hook arm
Lack of lube will
break locking arm
what
was
that?!
It
won’t
move!
lack of
lube has
my load
handling
system
frozen
solid!
Lube
all
12
with GAA
monthly…
…or every 50
operating hours of
the LHS, whichever
comes first…
590. 08-09 (C)
11/18/01
5:08 PM
Page 1
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