V-4
TROUBLESHOOTINGOVERALL MACHINE
COMPLETE FAILURE OF ALL SYSTEMS.
Inspect the proximity
switch.
5
Inspect the fuse.4
Inspect hydraulic pump
P4.
3
Inspect the hydraulic
pump.
2
Inspect the hydraulic
oil level.
1 Add hydraulic oil.
• Repair or replace hydraulic pump.
• Replace the coupling mechanism.
Repair or replace hydraulic
pump.
Replace fuse.
Replace proximity switch.
Normal
Normal
Normal
Faulty
Faulty
Faulty
Not enough oil
Normal
Faulty
Inspect the pilot valve.8
Inspect the control
valve (sub).
7
Inspect the lever lock
solenoid.
6
Repair or replace lever lock
solenoid.
Repair or replace control
valve (sub).
Repair or replace pilot
valve.
Normal
Normal
Normal
Faulty
Faulty