mecalac AS 50, Operating Instructions Manual

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S45E/S45T/Z45T 9-2
9 Malfunctions, causes and remedies
9 Malfunctions, causes and remedies
N O T E
* ) Malfunctions may only be remedied by authorized personnel
Malfunction Possible cause Remedy
Engine See Engine Operating Instructions
Engine does not start Drive switch (4-7/13) is not in Switch into neutral position
neutral position
Bucket arm cannot be Pressure relief valve in the Completely dismantle and clean
raised/lowered control valve is open the pressure relief valve; readjust *
Pilot valve for the working Unlock the pilot valve (1-2/arrow)
hydraulics (4-7/12) is locked
Pilot pressure is not Open the pressure relief valve in
present or is too low the control cable,
clean it and readjust it *
Diesel engine has failed Using storage pressure, it is
possible to bring the bucket arm to
its lower-most position directly
after the engine fails.
» Not with built-in pipe break safety
device «
Steering requires increased effort Pressure relief valve in the control Completely dismantle and clean the
valve is open pressure relief valve; readjust *
Pusher in the priority valve is stuck Replace the priority valve *
Swivel mechanism does not swivel Block wedge blocks swiveling Remove block wedge and place it
(1-4/arrow) in it holder
Pressure relief valve in the control Completely dismantle and clean the
valve is open pressure relief valve; readjust *
Stabilizer fails The stop valve's connection in the Bring the bucket arm in the
frame under the revolving seat is direction of travel; make it move
jammed freely
Stabilizer fails when bucket arm is Non-return valve in the pressure Bring the bucket arm in the direction
lowered in the swiveled position line is open of travel; remove and clean the non-
return valve; if necessary, replace
*