PS Magazine - TB 43-PS-585
PS, The Preventative Maintenance Monthly
ISSUE 585
AUGUST 2001
25
AUG 01
SEE. . .
130G Grader. . .
I
t’s a big rig, but small things can stop it from moving tons of dirt. So here are two
PM pointers you can use to keep your grader working.
Stop Cylinder Hose Rub
Hydraulic hoses that cross over the grader’s cen-
tershift cylinder get a raw deal. The hoses rub
against the cylinder when the blade’s circle is
raised, lowered or rotated. All that rubbing can
wear holes in the hoses.
Holes let fluid leak, then there’s not enough
hydraulic pressure to operate the blade’s circle.
Construction operations come to a halt.
So, eyeball the hoses for wear marks. See any?
If so, loosen the clamp where the hoses are mount-
ed on the cylinder. Then reposition the hoses out of
harm’s way and tighten the clamp.
Pulley Lubing
The grease fitting for the grader’s fan bearing is behind the engine’s screen door
on the vehicle’s roadside.
Without lube, the bearing seizes up. Then the blade stops turning, letting the
engine and transmission overheat.
So keep the fan pulley bearings lubed. During scheduled services, give the fitting
four to five shots of grease.
Look for rubbing here
Don’t
forget
to
lube
the fan
bearing.
W
hen it’s time to shut down your excavator for the
day, make sure you shut down exactly the way it says
on Page 2-85 of TM 5-2420-224-10. Doing it wrong
can cost your unit some $300 for a new generator.
The right procedure is simple:
Let’s see…
Idle, Throttle,
Ignition, key.
1.
Park the excavator and let the
engine idle for 5 minutes.
2.
Move the throttle lever to OFF.
3.
Turn off the ignition switch.
4.
Turn the master disconnect
switch key to OFF.
PS 585
Small Things Matter
Never turn off the master disconnect switch key or
the ignition switch before setting the throttle to OFF.
If you don’t shut off the fuel first, the generator will
build up a load beyond its capacity and burn out.
585. 24-25 (C)
6/28/01
2:40 PM
Page 1
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