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Page Title:
FOUR VALVE BANK FUNCTIONS (SWING, LIFT, TELESCOPE AND HOIST) DO NOT OPERATE OR OPERATE SLOWLY. (Cont) |
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 TM 9-2320-364-34-1
4. FOUR VALVE BANK FUNCTIONS DO NOT OPERATE OR OPERATE SLOWLY (CONT).
2.
TEST OPTIONS
KNOWN INFO
Operation test.
Unit Troubleshooting
Do functions operate with
tasks completed.
assistant pushing in MHC
REASON FOR QUESTION
Outriggers operate.
SYSTEM HYDRAULIC
If system hydraulic pressure
POSSIBLE PROBLEMS
PRESSURE VALVE MANUAL
valve is faulty and override
OVERRIDE push button?
manual push button is pushed in,
Solenoid valve assembly faulty.
functions will operate. If
Four valve bank faulty.
functions do not operate with
override manual push button
pushed in, four valve bank and
solenoid valve assembly
components are suspect.
Go to Step 3 of this
NO
Fault.
YES
Repair solenoid
valve assembly
(Para 16-34).
Verify repair, go to
Step 5
of this Fault.
2-476
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