Attachments; Load Holding Control Valve (Option) - Wacker Neuson 28Z3 Operator's Manual

Operation

3.34 Attachments

3.35 Load holding control valve (option)

Fig. 94: Transport position
3-68
Important!
Please refer to the Operator's and maintenance manual of the attachment manu-
facturer for using and performing maintenance on attachments such as hammers,
grapple forks etc.
NOTICE
The "load holding control valve" safety feature avoids the boom from
being lowered or dumped out without being braked, in the event of a
bursting hose or pipe.
Danger! Danger!
load holding control valve
The "
hose or a pipe bursts –
Have damage to the hydraulic system and to the load holding control valve
itself immediately repaired and checked by technical staff with suitable
training!
Important!
The load holding control valve limits boom drop in the event of a boom hydraulic
hose assembly or fitting failure (reference ISO 8643).
☞
In the event of damage, proceed as follows:
• Immediately stop the machine.
• Move the boom to transport position.
• Fold up the left-hand side control lever base.
• Stop the engine.
• Remove the starting key and lock the cab.
• Lock the machine and the attachment.
• Have damage to the hydraulic system and to the load holding control valve itself
immediately repaired and checked by an authorized Wacker Neuson service
technician.
Environment!
Collect the spilled hydraulic oil in a suitable container.
☞
Dispose of spilled hydraulic oil by an ecologically safe method
☞
Always contact the relevant authorities or commercial establishments in charge of oil
disposal before disposing of biodegradable oil.
" safety feature is activated as soon as a
Danger of accidents!
OM 28Z3 US – Edition 2.0 * * 28Z3b340.fm