Lull 944E-42 Service Manual - Manual (Page 59)

3-29 944E-42
Boom
3.9.5 Hydraulic Hose Replacement - Step 2
USE IN CASE OF:
BOOM LIFT LINE FAILURE - Lift Cylinder to Block (1)
BOOM LIFT LINE FAILURE - Block to Frame
Bulkhead (2)
BOOM EXTEND LINE FAILURE - Extend Cylinder to
Block (3)
BOOM EXTEND LINE FAILURE - Block to Frame
Bulkhead (4)
1. Clear area of any unnecessary personnel.
2. Block all four wheels.
3. Place a container under the failed hose to catch any
hydraulic oil that may escape from this procedure.
4. Return to the cab, fasten seat belt and start engine.
5. Slowly retract the boom.
6. Slowly lower the boom and ground the carriage.
7. Shut off engine.
8. Completely remove the load from the carriage, if not
previously done.
9. Place an Do Not Operate Tag on both the ignition
key switch and the steering wheel, stating that the
machine should not be operated.
10. Have the machined serviced immediately. Replace
any failed hydraulic lines with new parts.
11. Return to the cab, fasten seat belt and start engine.
12. Cycle the lift/lower and extend/retract cylinders
several times to bleed air from the system. Check for
leaks.
13. Recheck hydraulic oil level. Add oil if necessary.
14. Transfer any waste oil to a properly labeled container
and dispose of accordingly.
OU1061
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