PS Magazine - TB 43-PS-703

PS, The Preventative Maintenance Monthly

ISSUE 703

JUNE 2011
PS Magazine - TB 43-PS-703 - Page 24 of 32
44
PS 703
JUN 11
Clamp the Hose
Mechanics, the hydraulic hoses that mount next to the roadside edge of the
radiator grill can end up with a raw deal.
There’s a clamp that holds these hoses in place. Sometimes the clamp goes
missing when the hydraulic lines are replaced, or when the engine is overhauled by
support. Without the clamp, the hoses rub against the grill’s guard frame when the
dozer’s blade is raised or lowered.
Enough rubbing causes the hoses to spring a leak. That puts the dozer’s blade out
of commission. Without hydraulic oil, it won’t retract, elevate or push dirt forward.
Before the day’s run, eyeball the hydraulic hoses where they pass through the
radiator grill. The clamp should be snug against the hoses. If it’s missing, order a
new clamp with NSN 5340-01-258-0942.
Rock Guard Crud
The rock guard on the dozer blade’s tilt cylinder is a haven for mud, small rocks,
dirt and sand.
All that crud breaks down the
hydraulic hoses inside the rock
guard. When hydraulic hoses
get in bad shape, they leak.
Without hydraulic oil, the blade
won’t retract, elevate or push
dirt forward.
Use
a
high-pressure
water
hose on the tilt cylinder’s rock
guard. You may have to get
your mechanic to remove the
rock guard so you can get out
all that hard-packed crud.
D7G Tractor…
Clean dirt and rocks from here
hydraulic
hoses that
operate the
dozer’s blade
are known to
spring a leak.
when that
happens, the
blade will
move
sluggishly
or
not at all.
so, here
are
two
areas
that
need your
attention.
hey!
what’s
going
on?
why
isn’t your
blade
working?
can’t
you
tell?
I have
the…
…Hydraulic
Hose Woes!
Make sure clamp,
is in place
703.44-45.indd
1-2
5/13/11
1:45 PM
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