Cummins/Onan AT U C D ‘400 - 4X / 11 10 C — removed, con=

For the Cummins/Onan AT U C D ‘400 - 4X / 11 10 C.

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Procedure

1. Carefully pull outward on bottom of control
2. Lower control accessory panel from cabinet. Top
3. Remove the top hinge pin from control accessory
4. Lift up new control accessory panel into cabinet,
5. Insert the screw in bottom hinge pin and tighten

Source: manual:962-0500 Onan AT (spec A-C) Transfer Switch Service Manual (08-1979).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.