Trailer Crane AHK 30/1400
Appendix
02/2008
191
13.1.9 Check Telescoping Mast Lowering, and Telescope Out Function
Error: Functions "Lower" and Telescope out" for the telescoping mast do not work.
Motor switched on,
crane operation
selected.
Overload indicator
light OFF
Remove the rear cover
plate in front of the
proportional levers
Cover plate
removed
No
Yes
Actuate one of the
defect functions
Proportional valve
lever steers out of line.
Y3 switched ON
Yes
Actuate the black
emergency operation button
and approach the defect
function again
Movement lower
mast and/or extend
telescope function in
order
Y3
Y4
Valve and/or valve
coil defect
Yes
Actuate the other
defect function
Proportional
valve lever steers out
of line
Y3
switched
on
Reduce load on hook,
check overload indicator
light
No
No
Yes
Contact customer
services
Yes
No
No
Actuate one of the
defect functions
Movement lower mast
and/or extend telescope
function in order
Check completed
Yes
No
Abb. 224: Check the telescoping mast