Nilfisk-Advance Advance Retriever 2060, Service Manual

Page: 33 / 165

FORM NO. 56043051 / Retriever
™
2060 - 31
HOPPER SYSTEM
SYMPTOM THREE
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TROUBLESHOOTING GUIDE (CONTINUED)
Yes
No
Yes
No
Yes
Yes
No No
Yes
No
Yes
Dump door
cylinder does
not operate.
Check for 12vdc
at L1 connector
blk (-) and
blu/yel (+) wires
with key switch
on and dump
door lever in
open and closed
position.
Repair or
replace dump
door directional
control valve.
See hydraulic
section.
Check for oil
flow to dump door cylinder
with lever in
open and closed
position.
Check for 12vdc at
blk (-) and grn/gra (+)
wires on K3 relay
with key switch on.
Check hopper down
lever position, linkage and operation of S15.
Repair or replace as
needed.
Check for +12vdc at
vio/wht wire on K3
with key switch on.
Check for +12vdc at
orn wire on K3 with
key switch on.
Check continuity of orn
wire through harness.
Repair or replace as
needed.
Check wiring and
operation of S16. See
hydraulic section.
Repair or replace as
needed.
Replace K3 relay.
Repair or
replace dump
door cylinder.