Maintenance work on the superstructure
8.7 Slewing gear
16.08.2018
Maintenance manual 3 302 577 en 8 - 53
GMK7450
Draining oil
• Remove the plate (1).
• Place a receptacle under the screw (2).
• Unscrew the filter (4) and screws (3) and (2).
• Drain the oil.
• Replace the gasket and screw the screw (2)
back in.
Topping up the oil
• Top up the oil through the filler neck (4) until
oil is visible in the sight glass (5).
• Replace the seal and screw in the plug (3)
and the filter (4).
• Fasten 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 remove
d and inspected by the manufacturer.