Manitowoc GROVE GMK7450 Maintenance Manual page 295

Telescopic
section II
Telescopic
section I
Maintenance manual
GMK7450
•
Retract all telescopic sections.
•
Enter the RCL rigging code for the current rigging mode of the truck crane.
•
Telescope telescopic section II to the first locking position (44%) and
lock it.
•
Override the RCL,
To do this, turn the Override key-operated switch to the right.
•
Extend telescopic section I to approx. 88% until the lubricating hole for
telescopic section II can be reached in the top chord.
•
Use the grease gun (PAL1) to lubricate the upper slide faces at the lubri-
cating nipples (1) on both sides.
•
Fully retract telescopic section I .
•
Turn off the RCL override.
•
Fully extend telescopic section II .
•
Use a brush or a roller (PAL1) to lubricate the outer upper and lower slide
faces of telescopic section II .
•
Extend and retract telescopic section II again so that the grease is distrib-
uted uniformly on the telescopic slide faces.
•
Retract telescopic section II .
•
Retract all telescopic sections.
•
Enter the RCL rigging code for the current rigging mode of the truck crane.
•
Telescope telescopic section I to 100% and lock it.
You can now reach the lubricating nipples (1) via the front lubricating hole
in the top chord of the basic section.
•
Use the grease gun (PAL1) to lubricate the upper slide faces at the lubri-
cating nipples (1) on both sides.
•
Use a brush or a roller (PAL1) to lubricate the outer upper and lower slide
faces of telescopic section I .
•
Retract and extend telescopic section I again so that the grease is distrib-
uted uniformly on the telescope slide faces.
•
Retract telescopic section I .
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Maintenance work on the superstructure
8.11 Main boom
s
8 - 93