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■ Checking the block valves
The piloted blocking valves allow to held the load in position in
case of burst of a flexible hose.
To check the efficiency of a valve, proceed as follows:
•
Load a weight near the maximum payload onto the boom.
•
Raise the load some centimetres above the ground (max
10 cm). To check the valve on the telescope extension
cylinder move the boom to maximum height and extend it
some centimetres.
•
Loosen the oil hoses to the cylinder of which you are
checking the valve with caution.
•
To check the efficiency of the block valves of the outriggers,
lower them to the ground and unload the weight of the tyres
without raising them. Loosen the cylinder hoses to check
the efficiency of the valve.
During the check, the oil will flow out of the hoses and the load
shall remain blocked in position.
Should that not be the case, the valve must be replaced.
Contact GENIE Technical Service.
Handler with telescopic boom GTH-4013
MAINTENANCE
(every 3 months)
Attachment pitching cylinder
Page
Document 57.0007.0200 - 01/2006
Attachment coupling cylinder
Lifting cylinder
Balance cylinder
Extension cylinder
Outrigger cylinder
D-22
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