Maintenance work on the superstructure
8.4 Slewing gear
8 - 20 3 302 649 en Maintenance manual
GMK4090
07.12.2017
Draining oil
• Remove the plate (1).
• Place a container under the screws (2).
• Unscrew the filter (4) and screws (3) and (2).
• Drain the oil.
• Replace the gasket and tighten the screws (2).
Topping up the oil
• Top up the oil through the filler neck (4) until
oil is visible in the sight glass (5).
• Replace the gaskets and screw in the bolt (3)
and the filter (4).
• Replace the plate (1).
Checking the oil Check the waste oil that was drained from the slewing gears for abrasion
particles, or have it tested at a laboratory.
• Pour the waste oil through a clean filter mat.
• Examine the oil or the residues on the filter mat using a magnifying glass.
If you find abrasion particles or solid materials on the mat, the slewing gear
transmission must be removed and inspected by the manufacturer.
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