Mechanical Problems; Emergency Operation - Liquid System - Hardi Ranger 550 Instruction Book

7 - Fault finding

Mechanical problems

Mechanical problems
FAULT
Boom will not fold in or out.
Boom will not fold completely.
Boom not aligned.
Boom will not stay in spraying position.
Wing to be kept folded swings out when unfolding
other side of the boom.

Emergency operation - Liquid system

In case of power failure it is possible to operate all functions of the operating unit manually. First disconnect the multi plug
from the control box. Now manually turn the emergency control knobs.
The problem may be due to a blown fuse. A fuse is placed inside the box. Fuse type: Thermo
7.4
PROBABLE CAUSE
Cylinder.
Cables.
Cables.
Various.
Various.
CONTROL/REMEDY
Adjust the fold cylinder.
Check adjustment of center cables.
Adjust and grease complete boom cables and stops.
Check for hydraulic leaks through solenoid block.
Check for a solenoid that is stuck open.
Boom must be completely unfolded - then fold out
the desired boom wing.
Check for hydraulic leaks through solenoid block.
Check for a solenoid that is stuck open.