Maintenance work on the superstructure
8.6 Hoists
16.08.2018
Maintenance manual 3 302 577 en 8 - 47
GMK7450
Draining oil
• Place a receptacle under the pipe (3).
• Unscrew bolts (1) and (6) and allow the oil to
drain.
• Replace the gaskets and secure the hose (5)
with the screw (6) – torque 30 Nm (22.1 lbf ft).
Topping up the oil
• Fill the oil through the pipe (3) up to the
Max. mark (4).
• Replace the gaskets and secure the hose (2)
with the screw (1) – torque 30 Nm (22.1 lbf ft).
Checking the oil
H
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 or 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.
H
Some abrasion particles may appear in the first oil filled. If you notice abra-
sion particles during the first oil change (after 200 oper. hrs.), first consult
Manitowoc Crane Care before introducing any specific measures.
G
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
.
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