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Page Title:
BOOM DOES NOT RAISE OR RAISES SLOWLY. (Cont) |
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 TM 9-2320-364-34-1
14. BOOM DOES NOT RAISE OR RAISES SLOWLY (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Unit Troubleshooting
Flowmeter test.
on Page 2-597
tasks completed.
Boom lowers.
REASON FOR QUESTION
Is an increase in flow
If overload sensing system
POSSIBLE PROBLEMS
(OSS) directional valve is faulty,
measured at main hydraulic
flow will return to tank. If low or
Four valve bank faulty.
filter when BOOM control
no flow was measured from
lever is in UP position?
BOOM valve, and no flow is
measured on crane return hose,
BOOM valve is faulty.
Repair four valve
bank (Para 16-26).
NO
Verify repair, go to
Step 6 of this Fault.
YES
Repair four valve
bank (Para 16-26).
Verify repair, go to
Step 6 of this Fault.
2-596
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