25
Unit angles very
slowly
Hydraulic fluid level low Fill hydraulic fluid up to the fill line on the reservoir using Sno-Way hydraulic
fluid.
Pivot bolt too tight
clamping a-frame to
swing frame
Loosen pivot bolt slightly to free up swing frame movement.
Improper oil viscosity for
outside air temperature/
Ice in hydraulic tank
This will effect all functions. Replace hydraulic fluid with Sno-Way hydraulic
fluid.
Damaged cylinder Visually inspect cylinder. If it is damaged replace cylinder.
Cylinder packing
improperly torqued or dry
Turn the Gland nut counter clockwise about 1/4 turn. If this does not fix the
issue replace cylinder.
Crossover relief valve
pressure setting too low
All other problems should be addressed before moving to the cross over
relief valve. If the cross over relief valve is not set properly you will also
notice the plow not holding angle when plowing. If this is the case replace
cross over relief valve.
Unit angles in one
direction
Angle coil (A or D )
inoperative
Check to see if the red (A) or green (D) wire has a ground signal. If it does
and the coil is not magnetized the coil needs to be replaced.
Low or no current
available at angle coil (A
or D)
Check wiring harness to make sure the connection had not been severed. If
a ground is present when operated from the red (A) or green (D) wire one of
the coils may be weak. Swap the coil with another coil on the valve block. If
the problem moves to a different function replace coil.
Angle valve (A or D) not
operating
Swap the (A or D) valve out with the ( C ) raise valve and see if the angle
function works. If the problem moves to the raise function replace valve.
Angle cylinder binding or
bent
Visually inspect cylinder. If it is damaged replace cylinder.
Crossover relief valve
sticking or stuck
Remove cross over relief valve and inspect. Clean if possible or replace
crossover relief valve.
Unit does not hold
angle
Note: This problem
is usually noted
when pushing
snow.
Cross over relief valve
pressure setting too low,
sticking or stuck
Replace crossover relief valve.
Pilot check valve has
debris or damaged piston
Remove pilot check valve and inspect both cartridges and piston. It the valve
has external springs make sure they both are not damaged and installed
properly. Clean valves and re install.
Fluid leaking at
power unit
Hydraulic fittings not
torqued properly (too
tight, too loose)
Inspect fitting tighten if too loose. If too tight inspect hose fitting for cracks.
Check O-rings on fittings on valve block to see if they are damaged. Replace
hoses or O-ring if they are available.
O-rings between valve
block and base are worn/
missing or not seating
properly
If the oil is leaking from between the top valve block and the base, remove
the screws that hold the top valve block to the base. Check the O-rings. If
they are damaged replace and seat properly.
O-rings between base
and the reservoir worn or
not seating properly
Drain the oil out of the reservoir. Remove the tank. Inspect the O-ring on the
base block. If it is damaged or not seated properly re seat or replace the O-
ring.
(continued)
TROUBLESHOOTING GUIDE
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
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