PS Magazine - TB 43-PS-577
PS, The Preventative Maintenance Monthly
ISSUE 577
DECEMBER 2000
M917A1 Dump Truck . . .
perators, here are two PM remind-
ers that’ll help keep your road-grading
operations corrosion-free.
Lube Hydraulic Pump
Three grease fittings on the grader’s
hydraulic pump are often missed dur-
ing scheduled maintenance.
Without lube, the U-joints on the
pump’s drive shaft shake loose from
vibration and excessive wear. Also, the
shaft’s bearings rust and burn out.
Eventually, the drive shaft and pump
stop working. Then, no hydraulic fluid
gets pumped to the grader’s blade,
circle drive, scarifier or front wheel
tilt. End result: an NMC grader. So
always give each fitting 4-5 pumps of
grease during scheduled services.
130G Grader . . .
Bleed the Brakes
It doesn’t matter if you’re at the
worksite or in the motor pool, you must
bleed your grader’s air brakes after each
use.
That’s because air in the brake sys-
tem will condense due to temperature
changes, forming moisture. Moisture
leads to corrosion, which plugs up
brake valves and cylinders leading to
brake failure.
So drain the water from the air tank
after each day’s run. Just open the drain
cocks on each side of the tank and
leave them open until no more water
comes out. Close the valve tightly when
you’re done.
Open each valve to let water out
O
perators, you’ve got to drain the
M917A1 dump truck’s fuel/water sepa-
rator after operation.
Not draining the separator leaves wa-
ter and crud in the vehicle’s fuel sys-
tem. Then the engine runs roug
h...or
not at all.
Open the separator—located under
the engine on the roadside of the ve-
hicle—by turning its drain cock coun-
terclockwise. Store drained fuel in an
approved hazardous waste container.
Never
dump it down a drain or on the
ground.
If the fuel is clear, you’re OK. If the
fuel doesn’t run clear, close the valve
and report it to your mechanic.
Also, make sure your mechanic re-
places the fuel filter twice a year.
Let the Water Out
goin'
my way,
pal?
there's
no
room
for you
here. my
pm
is
grade a
!
Use access
holes to
reach fittings.
..
...Then give
each one 4-5
pumps of grease
View behind plate
Drain fuel/
water separator
after each use
PS 577
25
DEC 00
PS 577
24
DEC 00
Back to Top Back to Top
