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hYDrauliC oPeration
511 / Hydr.KAB.BEd. 9501 GB
GB
Operation errors
In the operation errors which follow, a problem can arise with the coupling and/or
uncoupling of the hydraulic hoses.
Operation error no. 1
- Pressure hose (P) and runback hose (T) coupled.
CORRECT !
- Selector valve (9) open for pick-up operation.
CORRECT !
- Lever switch (6) into position I.
CORRECT !
- Pick-up in raised condition.
WRONG !!!
Result:
Due to the dead weight of the pick-up, pressure builds up in the hydraulic hose (P).
To uncouple the pressure hose is only possible with great effort.
Solution:
Put lever switch (6) into the "0"-position for reoperation. The pressure in the hydraulic
hose can be eased by opening a screw connection.
Caution!
Close the selector valve (9) for pick-up operation before uncoupling and
bring the control valve (S) into "lower" or "float" position.
Operation error no. 2
The wagon with hydraulic drawbar is coupled to the tractor and the jockey wheel is
cranked up.
- Pressure hose (P) and runback hose (T) coupled.
CORRECT!
- Selector valve (10) opened for hydraulic drawbar operation.
CORRECT!
- Lever switch (6) to pick-up operation (position I).
CORRECT!
- The hydraulic drawbar cylinder is not quite retracted
before garaging the wagon.
WRONg!!!
Result:
Because of the load resting on the cylinders, excess pressure builds up in the hydraulic
hose (P). Uncoupling of the hose is not possible.
Solution:
Completely retract the hydraulic drawbar cylinder or garage the wagon on the jockey
wheel so that the load on the cylinder is eased.
Caution!
Do not operate the hydraulic drawbar while the wagon is supported on
the jockey wheel.
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