Lincoln Electric SVM107-B service manual Brush Removal and Replacement, Procedure

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F-44 F-44

TROUBLESHOOTING & REPAIR

BRUSH REMOVAL AND REPLACEMENT (continued)

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PROCEDURE

1.Remove the spark plug wires.

2.With the 5/16” nut driver, remove the 6 sheet metal screws from the case top.

3.Remove the rubber gasket (cover seal) from the lift bail.

4.Remove the fuel cap. The rubber gasket for the fill tube with come off with the case top.

5.Remove the case top, then reinstall the fuel cap.

6.With the 5/16” nut driver, remove the 5 screws holding the right case side.

7.Remove the right case side by lifting up and out.

8.With the needle nose pliers, gently remove the blue and the red wires from the brushes. See Figure F.10.

9.With the 7/16” wrench, remove the brush holder assembly bracket from the stator frame.

10.With the 5/16” open end wrench, remove the two screws that secure the brush hold- er assembly to the bracket. Slide the brush holder assembly out of the bracket.

11.To change the brushes, use the slot head screw driver to pop off the plastic retainer on the back of the brush holder assembly.

12.Remove the old brushes and insert the new ones. One corner of the terminal clip is beveled so that the brush can go in only one way.

13.Snap the plastic retainer back onto the brush holder. The brushes may need some repositioning; wiggle them slightly to help them seat properly on the slip rings.

14.To reinstall the brushes, depress the spring-loaded brushes into the holder and slip a suitable non-metallic, fairly stiff retainer through the slots at the top and bottom of the holder. A cable tie works well; see Figure F.10. This will hold the brushes up so that you can easily install the holder.

15.Slide the brush holder assembly back into the bracket and, with the 5/16” open end wrench, install the two screws that hold it in place.

16.With the 7/16” wrench, install the brush holder assembly bracket to the stator frame.

17.Slowly remove the non-metallic retainer from the brush holder and let the brushes snap back against the slip rings.

18.With the needle nose pliers, connect the red and the black wires to the appropriate terminals on the brushes. The red wire is inboard.

19.Check the wire connections for clearance and tightness.

20.Reinstall the case side, fuel cap, lift bail gasket, case top, and spark plug wires.

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