15
Unit lifts but does not
hold - first action.
Dirt in check valve or lower solenoid valve Cycle raise and lower system to
flush debris
Lower solenoid valve sticking Cycle raise and lower system to
un-stick valve
Unit lifts but does not
hold- Second action.
Dirt or debris in check valve Refer to dealer
Check valve spring broken Refer to dealer
Lower solenoid valve sticking or stuck Refer to dealer
Seals, O-ring(s) on lower solenoid valve
damaged
Refer to dealer
Current available at lower solenoid without
switch function
Refer to dealer
Piston seals leaking on raise cylinder Refer to dealer
Unit will not lower
(Down pressure switch
OFF)
Plugged breather cap See Maintenance section
Low or no current available at lower solenoid Refer to dealer
Lower solenoid valve sticking or stuck Refer to dealer
Lower solenoid coil inoperative Refer to dealer
Raise cylinder damaged allowing movement in
one direction only
Refer to dealer
Flow control orifice plugged Refer to dealer
Unit will not lower
Or
Unit will not apply Down
pressure
(Down pressure switch
ON)
Motor not running Refer to dealer
Down pressure valve stuck partially shifted Refer to dealer
Lower solenoid valve sticking or stuck Refer to dealer
Inoperative down pressure, pressure switch Refer to dealer
Inoperative down pressure solenoid/valve Refer to dealer
Down pressure relief valve setting to low Refer to dealer
Down pressure toggle switch (in control box)
inoperative
Refer to dealer
Broken wire/ open circuit in down pressure
electrical circuit
Refer to dealer
Blade will not angle
(motor runs)
Hydraulic fluid level low See Maintenance section
Crossover pressure relief valve setting too low Refer to dealer
Spool valve sticking or stuck Refer to dealer
Low or no current available at angle solenoid Refer to dealer
Angle solenoid coil inoperative Refer to dealer
Angle cylinder binding or bent Refer to dealer
Pick-up tube not submerged in fluid See Maintenance section
Crossover relief valve sticking or stuck Refer to dealer
TROUBLESHOOTING
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
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