Nilfisk-Advance Captor 4800 - Dump Door Cylinder; Hopper Dump Door will Not Open or Close; Hopper System

42 - FORM NO. 56043093 / Captor
™
4300, 4800, 5400
HOPPER SYSTEM
TROUBLESHOOTING GUIDE
Possible Symptom
1 Hopper dump door will not open or close when in dump mode.
Part B:
Note: To test engine must be running in high speed (2400 rpm).
Dump Door
will not operate
Inspect for possible
mechanical binding of:
•Dump door
•Dump door linkage
•Dump door cylinder
Do some pump circuit 2
functions work?
Steering, engine fan, dust
control and side broom
motor(s).
No
Yes
Repair or replace dump
door, dump door linkage,
dump door cylinder. Does
the door function?
See hydraulic load trou-
bleshooting, section
titled, “No Accessories
work”.
No
Remove and disassemble
•L11 door open
•L12 door closed
Spool valve (cartridge)
inspect clean and reinstall.
Does the door function?
Yes
Replace defective spool
valve.
•L11 door open
•L12 door closed
Does the door function?
No
Repair or replace
door cylinder
No
No