Operating Elements

Hydraulic Connections for Additional Attachments

Hydraulic connections for supplying additional attachments are located at the end of the bucket sticket.

The hydraulics supply for additional attachments can be activated by turning the levers on the bucket stick and in the main hydraulic valve area.

Lever on bucket stick

Brakes and Swivel Lock Mechanism

The brakes (ME3503 and 3703) and swivel lock are automatically activated when the excavator is at a complete stop (no pilot control pressure).

The brakes only release when a drive or control lever is activated (pressure builds up).

Id.No.: 918148

Edition: Mar 05

Operating Elements SERVICE MANUAL

ME2503 - 3703

Tilting the Superstructure

In order to facilitate vertical digging on a slope, the superstructure of the crawler excavator ME3703 can be tilted hydraulically 15° by means of a lever. This helps keep the chassis horizontal.

Tilt Cylinder ME3703

Hydraulic Cylinder for Tilting Superstructure

Opening Covers for Maintenance

Pict.: Rear counter weight:

1.Open engine cover.

2.Loosen the screws for the counter weight (four screws each side).

3.Swing out the counterweights.

Important: The rear counter weights open by loosening both sides and the inner upper capscrews.

The counterweights are mounted on sliding rails, which allows them to be pulled out.

This provides more space for working on the hydraulic pump and diesel engine.

Pict. 018: Side valve bank cover:

1.To open the cover, use the cable inside the cab.

Following components are located: Main valve bank, hydraulic tank and filter, pilot valve, change over valve for swing-arm and auxilary hydraulics.

Id.No.: 918148

Edition: Mar 05