Pinguely-Haulotte HA20PX, Руководство по ремонту

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BREAKDOWN DETECTION FLOW CHART
Sheet DP037
NO STEERING MOVEMENT
(RIGHT AND/OR LEFT) ON THE FRONT AXLE
Folio 3/4
The defective
FRONT steering movement
left (2) or right (1) is made in
response to an opposite movement
control: right (2) or left (1)
NO
YES
- Invert the coils of the jib electrovalve YV22A and
YV22B
- Press the pedal and make a travel movement
- Activate the FRONT steering switch SA12
B
Put coils YV22A and YV22B back
into their original positions
D
NO
YES
12V OK at
terminals of
electric
connectors
- Open the turntable control panel
- Press the pedal and make a travel movement, activate
the FRONT steering switch SA12 and check for 12V
voltage on terminals 304 (left) and 306 (right) of the
printed circuit
Replace the
defective coil
END
See Fiche
C059
NO
YES
12V
OK
Replace the
U1 module See Fiche
C058
Repair the connection or
replace the wiring harness
between the turntable control
panel and electrovalve YV22
END
NO
YES
The fault
persists
Replace the
printed circuit See Fiche
C063
END
END
Press the pedal, make a travel movement and
activate the FRONT steering switch SA12 and
check for 12V voltage at the terminals of the
connector of YV22A or YV22B
Replace
electrovalve YV22 See Fiche
C067
END