156
Ground adjustment
(platform tilts)
Fault Possible cause Remedy
Emergency actuation:
Actuate "Open" (28) pushbutton and additional pushbutton (29) on lateral control element
until platform tilts
Platform does not tilt
Lift arms switch b13 misad-
justed or defective
Adjust lift arms switch b13 so
that the platform tilts after
touching the ground
PC board does not deliver out-
put at J 4/14
Check at connection bl (signal)
of plug J 41 (lift arms switch)
with test lamp
No voltage at valve plug S 3 or
S 4, defective cable
Disconnect plug J 4, check ter-
minal 14 with test lamp
Solenoid valves S 3 and S 4 at
tilt cylinder contaminated or de-
fective
Clean or replace
PC board has stored error
De-energize, check with test
lamp
Flow valve R 5 or pressure split-
ter stuck or defective
Clean or replace
PC board defective Replace
Platform does not tilt,
optical indicator in
driver's cab flashes rap-
idly
Tilt sensor b15 guide rod defec-
tive
Replace tilt sensor b15
Betriebsanleitung_Hubladebuehnen_EN.book Seite 156 Donnerstag, 15. August 2019 4:04 16
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