PLOW WILL NOT ANGLE OR
ANGLES IN ONE DIRECTION ONLY
Perform all initial inspections and checks listed on page 2 before beginning test procedure.
PLOW WILL NOT ANGLE OR ANGLES IN ONE DIRECTION ONLY.
UP AND DOWN FUNCTIONS ARE NORMAL.
DOES PUMP MOTOR RUN?
Test the Directional Solenoid Valve (s). See
“Directional Solenoid Valve Test” page 28.
Repair or replace as necessary.
See page 17-18.
Does plow angle both ways?
Remove, clean and inspect RV1 & RV2 Re-
lief Valves. See page 19. Repair or replace
as necessary. Reinstall. Adjust pressure.
See page 29-30.
Does plow angle both ways?
No
Yes
Yes
No
End
Call Hiniker Service
Refer to electrical troubleshooting.
Does pump motor run?
Yes
No
End
Yes
No
WARNING: Never disconnect any hydraulic line or fitting with the unit in the raised posi
-
tion. Always lower the unit and relieve pressure before removing any lines or caps. Allow
the system to cool down before draining oil or handling system components. Serious
burns can result from contact with hot oil.
Note:
If the plow angles only one way when the joystick is moved in any direction (except Down),
The directional solenoid valves is stuck and holding the valve in that position (see “Directional
Solenoid Valve Removal, Cleaning and Replacement “ page 17-18).
Note:
If the plow raises when joystick is moved left or right, the valve is stuck in the NEUTRAL posi-
tion (see “Valve Removal and Cleaning” page 17-18).
4 Plow Will Not Angle/Angles One Direction Only
Call Hiniker Service
Does plow angle
both ways?
Yes
No
End
Check angle cylinder hoses and fittings for
obstructions. Remove angle cylinders from
plow and drain oil. Check for a frozen/bind-
ing cylinder by manually compressing and
extending the cylinder. Repair or replace as
necessary.
Does plow angle both ways?
Yes
No
End
