Etesia HYDRO 124D, Technical Training Manual

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Adjustment of the drive transmission
To be sure that the drive transmission is working properly, the dead centre must be adjusted.
This is guaranteed when the three "zeros" coincide.
-The hydraulic zero
-The mechanical zero
-The electrical zero
HYDRAULIC ZERO
The hydraulic zero consists of positioning the pump distribution plate on the "displacement nil"
position (no flow on the A – B outlets of the pump).
The adjustment is made using the maintaining eccentric (1) of the dead centre spring (2).
MECHANICAL ZERO
The mechanical zero consists of adjusting the alignment of the pedals.
The adjustment is made on all the rodding (3) and the push-pull cable (4).
ELECTRICAL ZERO
The electrical zero consists of adjusting the position of the dead centre contactor which is in
zone (5).