Maintenance - Hiniker C-PLOW 8801 Operator's Manual

12

Maintenance

WARNING: Do not service or other-
wise handle a plow in the raised po-
sition unless it is securely blocked
against unexpected falling. Likewise, bolt
or pin ribs on the back of the moldboard to
prevent unexpected rollover of the plow due
to accidental loss of hydraulic pressure or
cylinder removal.
Dependable snowplow operation is the result of
following good maintenance procedures. Inspect
your plow frequently to ensure that all parts are
working smoothly, and develop a schedule for
maintenance at required intervals.
GENERAL
Wash salt and dirt off the plow before storage.
Touch-up any chips or scratches in the paint
and apply a light coating of grease to extended
cylinder rods to prevent corrosion.
HYDRAULIC SYSTEM
The majority of snowplow operational problems
are caused by bad oil in the hydraulic system.
Hydraulic oil should be changed every year for
best performance. Select Hiniker Cold Flow Hy-
draulic Oil or an equivalent oil that meets mili-
tary specification 5606, for plowing in extremely
cold temperatures.
To change hydraulic oil, first pin the upper and
lower moldboard halves together through holes
in the center moldboard ribs and center cylinder
supports to prevent the upper half from falling
forward when the hydraulic lines are removed.
Disconnect the electrical wiring harnesses from
the power unit and uncouple five hydraulic lines.
Unbolt the power unit from the plow, and remove
it to a clean working area that can capture any
spilled oil.
Carefully unbolt the oil reservoir from the power
unit and discard old oil. Purge old oil from the
angling cylinders by forcing rods to retract.
MAINTENANCE
Clean the suction filter at the pump inlet and
wipe any metal shavings off the magnet on the
pump.
Assemble the reservoir onto the power unit and
fasten the power unit onto the snowplow before
adding new hydraulic oil.
Reattach hydraulic hoses and electrical wires at
the correct locations on the power unit.
Pour hydraulic oil into the power unit reservoir
until the oil reaches the fill level.
Angle the plow full left and right to fill the angling
cylinders with oil. Add more oil to the reservoir
until the oil again reaches the fill level.
Un-pin the upper and lower moldboard halves.
Cycle the plow left and right, up and down,
and work the curl mechanism to purge any air
trapped in the system.
Check the oil level with the plow on the ground
and the blade uncurled. Add oil to the fill level, if
necessary, but do not overfill the reservoir.
DWG. NO. 6470