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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).
3.
TEST OPTIONS
KNOWN INFO
Operation test.
Unit Troubleshooting
Does boom lift cylinder on
tasks completed.
hoist motor side of crane
REASON FOR QUESTION
Boom lowers.
operate with rod end
Four valve bank OK.
Faulty cylinder will not operate or
disconnected from boom?
will operate slowly when
POSSIBLE PROBLEMS
compared to functioning cylinder
when disconnected from boom.
Lift cylinder faulty.
Replace boom lift
cylinder on hoist
motor side of boom
NO
(Para 16-6).
Verify repair, go to
Step 6 of this Fault.
YES
Replace boom lift
cylinder not on hoist
motor side of boom
(Para 16-6).
Verify repair, go to
Step 6 of this Fault.
2-594
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