JLG sky trak mmv Service Manual page 187

6. Remove and temporarily reposition the adjacent
boom extend line (4) in place of the failed boom
retract line.
4
Model MMV Rev. 12/04
IMPORTANT: During the remaining steps, hydraulic oil will
drain out of the base end of the boom cylinder. The escap-
ing oil should be deflected by some means (the failed hose
could be used) directing the oil into the drain container.
7. Check the hydraulic oil level. Add hydraulic oil if needed.
8. Return to the cab, fasten your seat belt and start the
engine.
9. Tilt the carriage upward if necessary for clearance
before retracting the boom.
10. SLOWLY RETRACT the boom.
11. SLOWLY LOWER the boom and ground the carriage.
12. Have the vehicle serviced immediately.
13. Replace any failed hydraulic lines.
14. Return to the cab, fasten your seat belt, and start the
engine.
15. Cycle the lift cylinder several times to bleed air from
the system. Check for leaks.
16. Transfer any wasted hydraulic oil to a container with
a cover and label as used hydraulic oil. Dispose of
used oil at an approved recycling facility.
17. Check the hydraulic oil level again. Add hydraulic oil
if necessary.
OT01902
Boom
4.43