Husqvarna DM 340 Replacing the carbon brushes, Replacing the seal retainer, Daily maintenance

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MAINTENANCE

6If necessary contact your dealer to clean the gearbox.

7Pour the new oil into the gearbox, about 0.5 litres.

8Check that the sealing lip on the radial seal is intact.

9Reassemble the machine and screw in the four screws. Be careful when assembling so as not to damage the radial seal.

Replacing the carbon brushes

The carbon brushes must be removed and checked regularly. Weekly if the machine is used daily or at longer intervals if the machine is used more seldom. The area of wear should be even and undamaged.

Both carbon brushes must always be replaced as a pair, but one at a time. Do as follows:

1Remove the 5 screws from the inspection cover. Use a chisel in the break tracks to easier remove the inspection cover.

2 Lift the carbon brush holder spring to one side (A).

3Loosen the screw (B).

4Pull out the carbon brush connector.

5Pull the carbon brush out from the holder (C).

6Clean the brush holder with compressed air or a brush. Replace the brush if worn.

7Fit the new carbon brush. Make sure that the side with the copper wire is facing the gear box and that the carbon brush slides easily in the brush retainer. If the carbon brush is fitted in the wrong direction it can get jammed.

8Put the brush holder spring back into place.

9Insert the carbon brush connection under the screw.

10Repeat the procedure with the other carbon brush.

11Guide the inspection cover into the handle's tracks. Begin with the screw at the very bottom of the handle and unscrew the inspection cover's five screws.

12Let the machine idle for 10 minutes to run in the new carbon brushes.

Replacing the seal retainer

If there is oil or water coming out of the leakage hole the seal retainer must be replaced.

1 Loosen the two screws for the water module.

2Use two flathead screwdrivers to carefully prize open the seal retainer.

3Carefully push in the new seal retainer and screw the water module back on.

Daily maintenance

1Check that nuts and screws are tight.

2Check that the power switch unit works smoothly.

3Clean the outside of the machine.

4Check and clean the cooling air openings.

5Check that the cord and extension cord are intact and in good condition.

Repairs

Important All types of repairs may only be carried out by authorised repairmen. This is so that the operators are not exposed to great risks.

12 – English

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Contents Operator’s manual KEY to Symbols Symbols on the machineSymbols in the operator’s manual Contents Presentation What is WHAT? What is what on the drilling machine?Safety Instructions Steps before using a new drilling machinePersonal protective equipment Always use common senseGeneral safety precautions Work area safetyElectrical safety Personal safetyGeneral working instructions Machine′s safety equipment SwitchStarting and Stopping Before startingStarting StoppingMaintenance Daily maintenance Replacing the carbon brushesReplacing the seal retainer RepairsTechnical Data EC-declaration of conformity Applies to Europe onlyWiring Diagram 1152417-30 ´z+TIi¶0G¨ ´z+TIi¶0G¨