Manitowoc Grove GMK 5250L Maintenance Manual page 240

Maintenance work on the superstructure
8.3 Hoists
Checking the oil
G
H
H
8 - 12
Risk of accidents from falling load.
If this inspection is not performed, there is a risk of damage to the hoist gear
which could lead to the load falling.
Check the waste oil for abrasion particles or have it tested in 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 hoist gear
must be dismantled and inspected by the manufacturer.
Some abrasion particles may appear in the first oil filled. If you notice such
particles during the first oil change (after 200 oper. hrs.), first consult
Manitowoc Crane Care
Draining oil
•
Place a receptacle under the pipe (2).
•
Remove the venting neck (1).
•
Disconnect the screw fastening (3) and
allow the oil to drain out of the hose (4) and
the pipe (2).
•
Replace the gasket if necessary.
•
Reconnect the hose (4) to the screw fasten-
ing (3) at the pipe (2).
Topping up oil
•
Add oil at the top through the pipe up to the
max. mark.
•
Secure the venting neck (1).
before introducing any specific measures.
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GMK5250L