Manitowoc Grove GMK 5250L Maintenance Manual page 279

Maintenance manual
GMK5250L
•
Raise the main boom to 15°.
•
Retract the telescopic sections V and VI to 0%.
•
Fully extend and retract the telescopic section VI again so that the grease
is distributed over the telescope slide faces.
•
Lower the main boom to 0°.
•
Lubricate the telescopic sections V , IV , III and II in the same way.
Before driving the truck crane
Fully retracting all telescopic sections of the main boom after greasing may
result in excess lubricant paste emerging at the collar (1).
•
Remove any excess lubricant paste from the collar (1).
This is to prevent any lumps dropping off on to the windscreen and sud-
denly obstructing the view when driving.
•
Raise the main boom to 15°.
•
Retract the telescopic section V to 0% and
extend the telescopic section VI to 47%.
•
Lower the main boom to 0° – do not lower to
below 0°.
•
Extend the telescopic section V to approx.
75%.
•
Use the grease gun (PAL1) to lubricate the
upper inner slide faces at the lubricating nip-
ples (1) on both sides.
3 302 744 en
Maintenance work on the superstructure
8.7 Main boom
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