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WARNING: Do not service or other-
wise handle a plow in the raised po-
sition unless it is securely blocked
against unexpected falling.
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 Hydraulic Oil or an
equivalent oil that meets military specification
5606, for plowing in extremely cold tempera-
tures.
To change hydraulic oil, disconnect the electri-
cal wiring harnesses from the snowplow power
unit and uncouple three 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.
Clean the suction filter at the pump inlet and
wipe any metal shavings off the magnet on the
pump.
Re-attach the reservoir onto the power unit and
re-connect the power unit on the snowplow be-
fore adding new hydraulic oil.
MAINTENANCE
Re-attach hydraulic hoses and electrical wires
at the correct locations on the power unit.
Pour hydraulic oil into the power unit reservoir
until the reservoir is half full. Angle the plow full
left or right to fill the angling cylinder with oil,
then add more oil until the oil reaches the fill line
- about 1 1/4 inches from the top. Do not overfill
the reservoir.
Cycle the plow left and right and up and down,
to purge any air trapped in the system.
Check the oil level with the plow on the ground.
Add oil to the fill line, if necessary, but do not
overfill the reservoir.
Periodically check all electrical connections for
proper fit and remove any contamination that
may be present.
To prevent contamination always place dust
caps on connectors when not in use. This is
particularly important when the plow is being
stored. A light coat of dielectric grease is recom-
mended to reduce corrosion of the contacts and
to make connecting and disconnecting easier.
Before each season check vehicle battery and
electrical system for proper operation. A weak
battery, dirty terminals, or faulty charging sys-
tem may cause improper operation and possible
failure of the joystick controller.
Before every plowing season, and throughout
the season, check the snowplow headlamps for
proper function and aim. Refer to sections titled
"System Check-Out" and "Headlamp Aiming
Procedure" in this manual for instructions.
ELECTRICAL MAINTENANCE
Maintenance 11
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