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Maintenance work on the superstructure

8.6 Hydraulic system

25.11.2016

Maintenance manual 3 302 364 en 8 - 41

GMK 4100L-1

Changing oil

filter 2

• Release the receptacle (1) at the hexagon.

• Change the filter (2).

• Replace the gaskets.

• Fill the receptacle with clean oil and tighten

it – torque 25 Nm (18.5 lbf ft).

After changing the

filter

• Check the valve on the hydraulic oil tank. Open the valve, if necessary;

à p. 8 - 44.

• Check the oil level. Top up the oil, if necessary; à p. 8 - 43.

• To bleed the system (from the crane cab), start the engine and let it idle

for 3 minutes.

• Check that none of the oil filters is leaking.

Risk of damage to the hydraulic pumps

The engine may only be started if the valve in the suction line of the

hydraulic pumps is open and there is enough hydraulic oil in the hydraulic

oil tank.

Manitowoc Grove GMK 4100L-1 User Manual

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