Hiniker DB1474A, Руководство по обслуживанию, Страница: 13 / 47

TITLE
V-Plow Will Not Raise 3
V-PLOW WILL NOT RAISE
Perform all initial inspections and checks listed on page 1 before beginning test procedure.
WARNING: Always retract wings fully, lower the plow to the ground and relieve pressure
before removing any fittings, hoses or caps. Allow the system to cool down before drain
-
ing oil or handling system components. Serious burns can result from contact with hot
oil. FAILURE TO HEED CAN RESULT IN SERIOUS INJURY OR DEATH.
V-PLOW WILL NOT RAISE
ALL OTHER FUNCTIONS ARE NORMAL.
DOES PUMP MOTOR RUN?
Perform Solenoid Valve Test to S3 Solenoid
Valve. Repair or replace as necessary.
See page 35.
Does V-Plow raise?
Refer to electrical troubleshooting.
Does pump motor run?
Turn ignition switch on and momentarily ac-
tivate the RAISE switch on the joystick con-
trol box to ensure that the FLOAT mode is
OFF
. Check S4 Solenoid Valve for magne
-
tism by loosely holding metal end of screw-
driver within 1/8” of the nut end of the S4
Solenoid Valve Coil.
Is screwdriver attracted to nut end of coil?
Remove, inspect and clean System Relief
Valve. Repair or replace as necessary. See
page 16 or 17. Reinstall and adjust.
See page 29 or 36. Does V-Plow raise?
Remove, inspect and clean S4 Solenoid
Valve. See page 20. Repair or replace as
necessary. Does V-Plow raise?
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 V-Plow raise?
Call Hiniker Service Does V-Plow Raise?
Call Hiniker Service
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