PS Magazine - TB 43-PS-701
PS, The Preventative Maintenance Monthly
ISSUE 701
APRIL 2011
51
PS 701
APR 11
Hydraulic Hoses
Hydraulic
hoses
on
some
of these forklifts Fop around,
dangle and tangle up. They get
damaged if they jump off the
guide pulleys.
If this happens, replace the
old pulley with a new one, NSN
3020-01-172-2787. You’ll also
need the screw that comes with
NSN 5305-00-155-3367.
If the pulley’s not the problem,
you
may
be
missing
hose
channels.
Before,
during
and
after operation, make sure the
hose channels are secured and all
there. If any are missing, replace
them with these NSNs:
Loose Fitting Drops Lift
An M4K forklift that can’t lift a load isn’t a forklift. It’s NMC, plain and simple!
If you have a forklift that lifts erratically, it probably has a hydraulic leak. The
usual suspect is the elbow ±tting that connects the hydraulic line to the main
hydraulic lift cylinder.
Vehicle vibration and wear and tear loosen the ±tting and let hydraulic Fuid leak
out. A loss of Fuid starves the vehicle’s hydraulic pump. Then the forklift won’t lift.
So, check out that elbow. Raise the forks a foot off the ground and turn off the
engine. ²or safety’s sake, use jack stands to block up the cylinder or forks before
doing the inspection.
Get on your hands
and knees and eyeball
the elbow ±tting. It’s
directly
under
the
forklift’s lift rack.
If
it’s
leaking,
tighten the ±tting and
add
hydraulic
Fuid
until
the
dipstick
shows ²ULL.
Channel
NSN 3930-01-168-
Main Center
Left Hand
9547
9548
M4K Forklift…
if you’re trying to avoid a problem
like this then here are some pm
pointers to keep in mind when moving
loads at the worksite.
what
gives?
my
front
end! it’s
falling
apart!
as always, follow the
checks and services in tm
10-3930-638-10
before
the day’s run.
New guide pulleys, NSN 3020-01-172-2787
Use screw, NSN 5305-00-155-3367
Tighten
fitting
to stop
leak
Replace
missing
hose
channels
701.50-51.indd
1-2
3/1/11
11:50 AM
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