Manitowoc GROVE GMK 3060 - Page 251

Maintenance work on the superstructure
8.7 Main boom
03.11.2017
Maintenance manual 3 302 574 en 8 - 41
GMK3060
• Derrick the main boom to 15°.
• Extend telescopic section IV to 0% and
telescopic section
V to 55%.
• Lock and unlock telescopic section V several
times, so that the grease is distributed over
the locking pins.
• Derrick the main boom to 0° – do not derrick
to below 0°.
• Extend the telescopic section IV to
approx. 75%.
• Use the grease gun (PAL1) to lubricate
the upper slide faces at the lubricating
nipples (1) on both sides.
• Derrick the main boom to 15°.
• Retract telescopic sections IV and V to 0%.
• Fully extend and retract telescopic section V again so that the grease is
distributed over the telescope slide faces.
• Derrick the main boom to 0°.
• Lubricate telescopic sections IV, III and II in the same way.
• When telescoping the respective telescopic sections, pay attention to
different main boom fixed lengths:
s
Telescopic section I 0 / 47 / 100 (%)
Telescopic section
II 0 / 49 / 100 (%)
Telescopic section
III 0 / 51 / 100 (%)
Telescopic section
IV 0 / 53 / 100 (%)
Telescopic section
V 0 / 55 / 100 (%)