Manitowoc Grove GMK 4100L-1 Maintenance Manual page 256

Maintenance work on the superstructure
8.4 Slewing gear
Checking the oil
8 - 20
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, i.e. 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 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 oil
•
Top up the oil through the filler neck (4) until
oil is visible in the sight glass (5).
•
Replace the gaskets and tighten the
screw (3) and the filter (4).
•
Replace the plate (1).
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GMK 4100L-1