Cummins/Onan — Transfer Switch Replacement
Repair & overhaul · Transfer Switch Assembly
From a Cummins/Onan service manual covering: GT30160EQ5KA000, GT40063XN52A000, GT40063YN52A000, GT40063ZN52A000. Check it applies to your exact model before use.
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Procedure
- Install the new switch on the mounting panel.
- Lift the switch and panel assembly and place the assembly into the cabinet and hang it on the studs on the rear wall. Install the four nuts and washers. Torque the nuts per Table 9-1.
- Reconnect all control and power wiring.
- Close the transfer switch door.
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Torque nuts per Table 9-1 (Metric Hardware Torques)
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.