Genie GTH-3512 Operator's Manual page 96

■ 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 (3500 kg
roughly) 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.
Handler with telescopic boom GTH-3512
MAINTENANCE
(every 3 months)
D - 20
Page
Document 57.0008.7200 - 05/2007
Courtesy of Crane.Market