DIAGNOSTIC FLOW CHART FOR E-68 HYDRAULIC POWER UNITS
MODEL
CONDITION
POSSIBLE CAUSE
CORRECTION
E-68
Motor does not operate.
1. Discharged or defective battery.
1. Recharge or replace battery.
2. Loose or corroded electrical connections.
2. Clean and tighten electrical connections.
3. Inoperative starter solenoid.
3. Replace starter solenoid.
4 Malfunctioning control switch.
4. Replace control switch.
5. Malfunctioning motor.
5. Repair or replace motor
Plow does not lower.
1. No current to “A” coil. (Black wire)
1. Locate malfunction and repair.
2. “A” cartridge jammed in closed position.
2. Clean or replace “A” cartridge.
3. Inoperative “A” coil. (Black wire)
3. Replace “A” coil. (Black wire)
4. Drop adjustment screw is turned all the way in. 4. Back out 1/2 turn
Plow creeps down.
1. Leaking “A” cartridge.
1. Clean or replace “A” cartridge.
2. Leaking “A” cartridge O-ring.
2. Replace O-ring.
3. Leaking Ram Packing Cup.
3. Replace Ram Packing Cup.
4. Leaking O-ring at bottom of lift cylinder.
4. Replace O-ring,
Xpress™ will not mount
1. Improper coupler engagement.
1 Engage coupler properly.
motor operates
2. Mechanical bind or interference.
2. Eliminate mechanical bind or interference.
3. Malfunctioning coupler.
3. Repair or replace coupler
4. Jammed “E” (Purple Wire) cartridge.
4. Clean or replace “E” cartridge.
5. Leaking or open Pilot Check Valve
5. Clean or replace Pilot Check Valve
Xpress™ will not
1. Improper coupler engagement.
1. Engage coupler properly.
Dismount
2. Mechanical bind or interference.
2. Eliminate mechanical bind or interference.
motor operates
3. Malfunctioning coupler.
3. Repair or replace coupler
4. No current to “E” (Purple Wire) coil.
4. Locate malfunction and repair.
5. Inoperative “E” (Purple Wire) coil.
5. Replace coil.
6. Jammed “E” (Purple Wire) cartridge.
6. Clean or replace “E” cartridge.
7. Leaking or open Pilot Check Valve
7. Clean or replace Pilot Check Valve
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