Maintenance work

Vent filter on the hydraulic oil tank

These additional pages apply to GMK truck cranes of the following types:

GMK 4075GMK 5100

GMK 5180GMK 5200

GMK 6200-1GMK 6220/6220-L

GMK 6250GMK 6300

Reasons for thisadditional information

The maintenance of the vent filter for the superstructure hydraulic system for these truck cranes is now different from the procedure described in the maintenance manual supplied. The changes cover

–an additional weekly maintenance procedure (W)

–a change to the annual maintenance procedures (M 12)

Additional weekly maintenance procedure (W)

This additional maintenance procedure describes the check to be carried out on the vent filter.

On the GMK 4075, the hydraulic oil tank is on the left-hand side of the carrier behind the driver's cab. On all other crane types, the hydraulic oil tank is on the superstructure, behind the crane cab.

The vent filter (1) is located on the hydraulic oil tank.

• Check the contamination display (2) at the top of the vent filter.

When the contamination display (2) is red:

• Replace the filter cartridge; à Change to the annual maintenance procedures (M 12), page2.