Manitowoc GROVE GMK7450 Maintenance Manual page 255

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Checking the oil
Maintenance manual
GMK7450
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.
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).
3 302 577 en
Maintenance work on the superstructure
8.7 Slewing gear
8 - 53

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