24
Unit will not apply
Down Pressure
(Down Pressure
switch ON)
Lower valve (B) sticking
or stuck
Remove the lower valve (B) and swap it out with the ( E ) valve. If down
pressure engages, the (B) valve is sticking and will need to be cleaned or
replaced.
Inoperative down
pressure, pressure switch
Remove the yellow and the brown wires from the pressure switch. Using a
continuity tester check for continuity across the two prongs of the pressure
switch. If the switch does not have continuity the switch has failed and need
to be replaced.
Down Pressure relief
valve setting too low
The motor will be starting and stopping rapidly or running constantly. The
down pressure relief valve can be adjusted. It is recommended that you take
the plow to your local Sno-Way dealer to determine if the adjustment is set to
the proper pressure setting. To adjust remove the top cap of the down
pressure relief valve. Using an Allen wrench turn the set screw inside the
valve clockwise 1/4 turn until the motor cycling stops for a minimum of 45
sec. If this can not be achieved the relief valve is damaged and needs to be
replaced.
Valve (E) sticking or stuck
closed
Check to make sure there is magnetism on coil ( E ). If there is remove ( E )
valve and swap it with valve (F). If down pressure now works the valve is
sticking and needs to be cleaned or replaced.
Valve (F) sticking or stuck
open
Check to make sure there is not magnetism on coil ( F ). If there is remove (
F ) valve and swap it with valve ( E ). If the motor stops running and the
down pressure now works the valve is sticking and needs to be cleaned or
replaced.
Broken wire/ open circuit
in down pressure
electrical circuit
Check wiring harness to make sure the connection had not been severed or
shorted on to a different ground causing the pressure switch or float / raise
(F) valve to stay open.
Blade will not angle
(motor runs)
Hydraulic fluid level low Fill hydraulic fluid up to the fill line on the reservoir using Sno-Way hydraulic
fluid.
Low or no current
available at angle coil (A
or D) BAD GROUND
Check wiring harness to make sure the connection had not been severed. If
a ground a 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 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.
Angle cylinder binding or
bent
Visually inspect cylinder. If it is damaged replace cylinder.
Pick-up tube not
submerged in fluid
Add fluid to the fill line. See maintenance section of owners manual.
Pilot operated check
valve sticking or stuck
closed
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.
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.
TROUBLESHOOTING GUIDE
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
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