Hiniker DB-7929-1, Руководство по обслуживанию

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Plow Will Not Raise 3
PLOW WILL NOT RAISE
Perform all initial inspections and checks listed on page 2 before beginning test procedure.
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.
PLOW WILL NOT RAISE
ALL OTHER FUNCTIONS ARE NORMAL.
DOES PUMP MOTOR RUN?
Turn ignition switch on and move joystick to
the Up position. Check NC Release Valve
for magnetism by loosely holding metal end
of screwdriver within 1/8” of the nut end of
NC Release Valve Coil.
Is screwdriver attracted to nut end of coil?
Refer to electrical troubleshooting.
Does pump motor run?
Remove, inspect and clean Adjustable Re-
lief Valve. Repair or replace as necessary.
See page 14.
Reinstall and adjust. See page 31-32.
Does plow raise?
Call Hiniker Service Does Plow Raise?
Call Hiniker Service
Yes No
No Yes
No Yes
End
Remove, inspect and clean NC Release
Valve. See page 15. Repair or replace as
necessary. Does plow raise?
No Yes
End
Yes No
End
Yes No
Refer to electrical troubleshooting.
Check fittings and lift cylinder hose for ob
-
structions. Remove lift cylinder and drain
oil. Check for a frozen/binding cylinder by
manually compressing and extending the
cylinder. Repair or replace as necessary.
Does plow raise?
No Yes
End