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Page Title:
BOOM DOES NOT LOWER OR LOWERS SLOWLY. (Cont) |
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 TM 9-2320-364-34-1
15. BOOM DOES NOT LOWER OR LOWERS SLOWLY (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Unit Troubleshooting
Flowmeter test.
Are
on Page 2-611
tasks completed.
0 gpm
Boom raises.
REASON FOR QUESTION
(0 lpm)
Four valve bank is OK.
measured at four valve bank
If piston seals are faulty in
with boom lift cylinder on cab
POSSIBLE PROBLEMS
cylinder that is active (not
side of boom isolated from
isolated from circuit), more than
0 gpm (lpm) will be measured. If
Lift cylinder faulty.
(disconnected) boom circuit?
piston seals are faulty in cylinder
that is isolated from
(disconnected) circuit, 0 gpm
(lpm) will be measured.
Replace cylinder on
LHS side of boom
(Para 16-6).
NO
Verify repair, go to
Step 5 of this Fault.
YES
Replace cylinder on
cab side of boom
(Para 16-6).
Verify repair, go to
Step 5 of this Fault.
2-610
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