Nilfisk-Advance Advance Retriever 2060 Service Manual page 31

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TROUBLESHOOTING FLOWCHART
Possible Symptoms:
1 Hopper and dump door cylinders do not operate.
2 Hopper cylinder does not operate.
3 Dump door cylinder does not operate.
SYMPTOM ONE
Hopper and dump
door cylinders do
not operate
Check for 12vdc at blk(-)
and blu/yel(+) connector
on L1 with key on and
hopper lift lever in up
position and dump door
lever in open and closed
Check for oil flow from
priority divider DV port
to directional control
Check for oil flow
out of the T port
on control valve.
Directional control valve
relief valve is open. See
hydraulic section, repair
or replace as needed.
No
position.
Yes
valve.
Yes
Yes
Check wiring from
directional control valve
harness to L1
connector. Repair as
needed.
Repair or replace L1.
No
See hydraulic section.
Repair or replace direc-
No tional control valve. See
hydraulic section.
FORM NO. 56043051 / Retriever
HOPPER SYSTEM
™ 2060 - 29