Lincoln Electric SVM153-A service manual Case Front Knobs Removal and Replacement Procedure

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F-18 TROUBLESHOOTING & REPAIR F-18

CASE FRONT KNOBS - REMOVAL AND REPLACEMENT PROCEDURE

Removal

Side View

(Pull)

(Pull)

Knob Nameplate

(Push)

Section

Master

Removal:￿

￿

(Push)

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1.Rotate the handle portion of the knob to an approximate vertical orientation (switch detent may position￿ handle a few degrees off vertical). This orientation should be noted and repeated at replacement for proper￿ "D" shaft orientation.￿

2.With one hand, grasp the very bottom of vertical handle and push towards the machine nameplate and￿ pull down. At the same time and with the other hand, grasp the very top of the handle and pull the top edge￿ of the knob away from the machine nameplate. The knob should "peel" away from the nameplate and the￿ white nylon holding fingers of the knob base, from top to bottom.

Replacement

Rounded

Flat

Replacement:￿

￿

1.If the white nylon cam of the detent mechanism is removed from it's spring loaded base by the above ￿ procedure or intentionally, it should be returned before the knob replacement is attempted. Press the cam ￿ into it's spring loaded holder so it sets flat and flush (Selector Switch Only).￿

2.Orientate the knob handle to the vertical as noted above and position the knob over the base, centered ￿ and parallel.￿

3.Press the knob onto the "D" shaft and white nylon holding fingers, maintaining the parallel position. ￿ The knob should "click" into place and should not pull off with normal operation.

COMMANDER 500