Craftsman 11218 Operation Manual - Page 10

MAINTENANCE ! WARNING: To ensure safety and reliability, repairs, maintenance and adjustments MUST be performed by a qualified service technician at a Sears Service Center. ! WARNING: For your safety, ALWAYS turn off switch and unplug sander from the power source before performing any maintenance or cleaning. It has been found that electric tools are subject to accelerated wear and possible premature failure when they are used to work on fiber glass boats and sports cars, wallboard, spackling compounds or plaster. The chips and grindings from these materials are highly abrasive to electrical tool parts, such as bearings, brushes, commutators, etc. Consequently, it is not recommended that this tool be used for extended work on any fiberglass material, wallboard, spackling compound or plaster. During any use on these materials, it is extremely important that the tool is cleaned frequently by blowing with an air jet. ! WARNING: Always wear safety goggles or safety glasses with side shields during power tool operations, or when blowing dust. If operation is dusty, also wear a dust mask. ROUTINE MAINTENANCE ! WARNING: DO NOT at any time let brake fluids, gasoline, petroleum- based products, penetrating oils, etc. come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic, which may result in serious personal injury. Periodic maintenance allows for long life and trouble-free operation. A cleaning and maintenance schedule should be maintained. As a common preventive maintenance practice, follow these recommended steps: ! WARNING: For your safety, ALWAYS turn off switch and unplug sander from the power source before performing any maintenance or cleaning. 1. When work has been completed, clean the tool to allow smooth functioning of the tool over time. Clean the tool with compressed air. 2. Use clean damp cloths to wipe the tool. Use a brush to brush off and clean the sander's Backing Pad. 3. Keep the motor air openings free from oil, grease and sawdust or woodchips, and store tool in a dry place. LUBRICATION Your Craftsman® Professional Orbital Sander has been properly lubricated and is ready to use. No further lubrication is needed under normal operating conditions. All bearings in the sander are lubricated for the life of the tool. 20 MAINTENANCE cont. BRUSH REPLACEMENT (see Fig. 11, 11a, 11b and 11c) 1. Unplug the sander. ! WARNING: Failure to unplug the sander could result in accidental starting causing possible serious personal injury. 2. Remove (3) screws from top cover of sander and remove top cover (see Fig. 11). 3. Locate the (2) Carbon Brush / Brush Holder Assemblies (see Fig. 11a). They are connected to red wire lead terminals and are in position on each side of the armature. 4. Carefully lift these (2) assemblies (see Fig. 11a and 11b) out of their positions (NOTE: Remember how they are positioned so that you can put them back in position correctly.) 5. Check the ends of the carbon brushes (see Fig. 11b) for wear. If either brush has less than 1/4-in. length of carbon remaining, replace both. DO NOT REPLACE ONE SIDE WITHOUT REPLACING THE OTHER. 6. To replace assemblies, disconnect the red wire lead terminals from the assemblies (see Fig. 11c), attach new assemblies to the lead terminals and place the assemblies back into their original positions next to the armature. Make sure the curvature of the end of the brushes matches the curvature of the armature and that the brushes move freely in brush holder assemblies. Fig. 11a 7. Reassemble the top cap with the (3) screws and do not overtighten. Armature Fig. 11 Fig. 11b Red wire lead terminals Fig. 11c Carbon Brush/ Brush Holder Assemblies Disconnect 21 27675 2/11/08