41
TELELIFT 3713 SX
SCHEDULED MAINTENANCE INSPECTIONS
4
41
Document 57.4402.9200 - 1
st
Edition 10/2006
INDEX
C-14 CHECK THE EFFICIENCY OF 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 (3700 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.
- 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 TEREXLIFT Technical Service.
Place a container of suitable size under the hoses.
A
C
B
E
Attachment pitching cylinder
Attachment coupling cylinder
Lifting cylinder
Balance cylinder
D
Extension cylinder
Summary of Contents for Telelift 3713 SX
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