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GENERAL
1.
Check to see that the motor is wired cor-
rectly with tight connections, for the proper
voltage.
2.
Check reservoir oil level.
PROBLEM
1.
Plow does not attach to ve-
hicle
2.
Pump motor does not run
3.
Pump runs with joystick in
neutral
4.
Plow will not lower
5.
Hydraulic cylinder does not
function or functions slow-
ly, motor runs
6.
Plow
does
not
raised with joystick in "neu-
tral" position
TROUBLE SHOOTING
POSSIBLE CAUSE
A.
Receivers are tipped for-
ward
B.
Prongs recoil out of receiv-
ers when attaching
C.
Park stand pinned too low
A.
Defective solenoid
B.
Defective pump motor
C.
Weak or defective battery
D.
Bad electrical connections
E.
Defective joystick control
box
F.
Blown fuse supplying pow-
er to control box
A.
Defective solenoid
B.
Defective joystick control
box
C.
Wiring short
A.
Reversed wiring on valve
block
B.
Defective joystick control
box
C.
Defective lift return valve
or coil
A.
Weak or defective truck
battery
B.
Oil level low
C.
Hydraulic connection leak
D.
Solenoid valve not opening
properly
remain
A.
Leakage
check valve
B.
Leakage through solenoid
lowering valve
C.
Internal leakage in cylinder
D.
Defective joystick control
box.
3.
Check that wiring harness relay connec-
tions are wired correctly
4.
Check for external leakage at cylinders,
hoses and power unit.
A.
B.
C.
A.
B.
C.
D.
E.
F.
A.
B.
C.
A.
B.
C.
A.
B.
C.
D.
through
pump
A.
B.
C.
D.
Trouble Shooting
REMEDY
Fully collapse lift cylinder
and rotate stop plate up to
brace the lift frame before
removing plow from truck
Slowly drive into receivers
and set parking brake
Lower receivers by adjust-
ing park stand.
Replace solenoid
Replace brushes or motor
Charge or replace battery
Clean and tighten connec-
tions
Replace control box
Replace fuse
Replace solenoid
Replace control box
Locate and repair
Correct wiring
Replace control box
Replace valve or coil
Charge or replace battery
Add oil (do not overfi ll)
Tighten or redo connection
Replace valve
Clean valve, or replace
Clean valve, or replace
Repack or replace cylinder
Replace control Box
9
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