User manual

40
Troubleshooting Guide
12-TROUBLE-SHOOTING (continued)
Problem
The box is not dragged under the
head.
Cause
The box is too full load; box side
fl aps are opened.
Driving pulley rings on motorizing
side units are worn out.
Motorizing side units low
pressure.
The head is not correctly
positioned; it is too down.
Defective head power valve
Correction
Check.
Replace as necessary.
Replace valve
Check pressure value (working
pressure)
Check the magnetic limit switch
position on the box height pick-up
cylinder.
2012 March
800rf-NA