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Cummins/Onan — Fuel Transfer Pump Motor Connections

Installation

From a Cummins/Onan service manual — check it applies to your exact model before use.

Applies to: Cummins/Onan DFAA, Cummins/Onan DFAB, Cummins/Onan DFAC, Cummins/Onan DFBF, Cummins/Onan DFCB, Cummins/Onan DFCC, Cummins/Onan DFCE, Cummins/Onan DFE

Procedure

  1. Remove the end bell cover for access to the motor wiring terminals.
  2. Disconnect the brown lead from motor terminal P103-3 and connect it to terminal P103-6.
  3. Disconnect the red lead from motor terminal P103-2; it will connect to the piggy-back terminal on the lead at P103-3.
  4. Cut the white lead from its ring connector at motor terminal P103-4 and strip 1/2 inch (12 mm) of insulation.
  5. Connect each lead of the five-lead wiring harness to the motor terminal or lead marked on it.
  6. Connect the red motor lead to the piggy-back terminal at motor terminal P103-3.
  7. Secure the end bell cover.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Strip 1/2 inch (12 mm) of insulation.

Full service-parts list: Cummins/Onan DFBF →, Cummins/Onan DFCC →, Cummins/Onan DFCE →, Cummins/Onan DFE →

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.

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