Dewalt DW840 Instruction Manual - Page 12

3. Screw the threaded flange onto the frequent lubrication.) This lubrication should only be attempted by spindle (Fig. 5). 4. Rotate the spindle by hand while press- trained power tool repair persons, such as those at DEWALT service centers or by other qualified service personnel. English ing the spindle lock button (Fig. 6) until the spindle locks, preventing the spindle from rotating. 5. Securely tighten the threaded flange with the supplied spanner wrench (Fig. 7). FIG. 7 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. Motor Brushes When brushes become worn, the tool will automatically stop and prevent damage to the motor. Brush replacement should be performed by DEWALT authorized service centers. 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 accessories 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 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 dampened only with water and mild soap. To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment should be performed by authorized service centers or other qualified service personnel. Always use identical replacement parts. Lubrication Three Year Limited Warranty DEWALT tools are properly lubricated at the factory and are ready DEWALT will repair, without charge, any defects due to faulty matefor use. Tools should be relubricated regularly every sixty days to six rials or workmanship for three years from the date of purchase. months, depending on usage. (Tools used constantly on production This warranty does not cover part failure due to normal wear or tool or heavy-duty jobs and tools exposed to heat may require more 10