OPERATING INSTRUCTIONS RH 400

Inspection and servicing

AIR-INTAKE SYSTEM

Read and observe the "EngineSafety instructions" chapter.

Main filter elements

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Risk of injury caused by rotating or hot parts of the engine.

Shut off the engines before working on the airintake system.

Secure the machine as described in the "Securing the machine" section.

Do not start the engine when parts of the air-intake system have been detached.

Engine damage may occur if the engine is allowed to draw in unfiltered air.

Each engine is equipped with six dry-air filters (Fig. 3-35:) consisting of main and safety filter element.

Insufficient air-intake performance, caused by acontaminated main filter element, is displayed on the BCS-screen (Fig. 3-36:).

Clean or renew main filter elements only if the BCS displays a warning on the screen (Fig. 3-36:) with the engines running at high speed or if the vacuum-meter (8, Fig. 3-37:) has changed to “RED“.

Operating Instructions

Inspection and servicing

Removal and installation

Unscrew nut (1, Fig. 3-35:) and remove cover (2).

Unscrew nut (4) and withdraw main filter element (5). Do not loose the washer under nut (4).

Replace or clean main filter element

New or cleaned main filter elements should always be at hand to shorten excavator downtimes.

Before installing the filter element, clean contact faces at cover (2, Fig. 3-38:) and at filter housing. Put on cover (2) and tighten nut (1).

During the removal of the main filter element, the safety element (7, Fig. 3-39:) must remain in the filter housing.