Hose rupture valves
(Optional equipment)
NOTICE
Do not dismantle the hose rupture valve as it is
pressurised. Contact a workshop authorised by
Volvo if problems arise.
WARNING
Risk of serious injury.
Working under an attachment that is not properly
supported could cause serious injury.
Before working under an attachment, ensure the
attachment is properly supported and the control
lockout lever has been locked and the engine is
shut off. Ensure that nobody enters the cab while
working under the attachment.
Attachment lowering after hose rupture
When engine is running
Lower the boom or dipper arm with the operating
levers in the usual way. Collect the oil from the
ruptured hose in a suitable vessel.
When engine is stopped
The servo hydraulic pressure is maintained by a
pressure in accumulator for a few minutes, which
permits the operator to lower the boom or dipper
arm in the usual way with operating levers. Do not
wait too long to lower the boom, the servo
hydraulic pressure will reduce at a speed
depending on your machine's condition and
equipment. Collect the oil from the ruptured hose
in a suitable vessel.
256
Operating techniques
Hose rupture valves
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