English

3.Screw the threaded flange onto the spindle (Fig. 5).

4.Rotate the spindle by hand while press- ing the spindle lock button (Fig. 6) until the spindle locks, preventing the spin- dle from rotating.

5.Securely tighten the threaded flange with the supplied spanner wrench (Fig. 7).

FIG. 7

frequent lubrication.) This lubrication should only be attempted by trained power tool repair persons, such as those at DEWALT serv- ice centers or by other qualified service personnel.

Motor Brushes

When brushes become worn, the tool will automatically stop and prevent damage to the motor. Brush replacement should be per- formed by DEWALT authorized service centers.

Fitting Wire Cup Brushes

The wire cup brush screws directly on the spindle of the machine without the use of flanges. A Type 27 guard is required when using wire brushes or wheels.

CAUTION: Wear work gloves when handling wire cup brushes. Wire brushes can become sharp.

MAINTENANCE

Cleaning

WARNING: Blow dust and grit out of the motor housing regularly using clean, dry compressed air. Dust and grit containing metal particles often accumulate on interior surfaces and could create an electrical shock hazard if not frequently cleaned out. ALWAYS WEAR SAFETY GLASSES.

CAUTION: Never use solvents or other harsh chemicals for cleaning the non-metallic parts of the tool. These chemicals may weaken the plastic materials used in these parts. Use a cloth damp- ened only with water and mild soap.

Accessories

Recommended accessories for use with your tool are available at extra cost from your local dealer or authorized service center. If you need assistance in locating any accessory for your tool, contact: DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286.

CAUTION: Accessories must be rated for at least the speed recommended on the tool warning label. Wheels and other acces- sories running over rated speed can fly apart and cause injury. Accessory ratings must always be above tool speed as shown on tool nameplate.

CAUTION: The use of any other accessory not recommended for use with this tool could be hazardous.

Repairs

To assure product SAFETY and RELIABILITY, repairs, mainte- nance and adjustment should be performed by authorized service centers or other qualified service personnel. Always use identical replacement parts.

Lubrication

DEWALT tools are properly lubricated at the factory and are ready for use. Tools should be relubricated regularly every sixty days to six months, depending on usage. (Tools used constantly on production or heavy-duty jobs and tools exposed to heat may require more

Three Year Limited Warranty

DEWALT will repair, without charge, any defects due to faulty mate- rials or workmanship for three years from the date of purchase. This warranty does not cover part failure due to normal wear or tool

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DeWalt DW840K instruction manual Maintenance