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Perkins — To eliminate air from the fuel system

Maintenance

From a Perkins service manual covering: 403C-11, 403C-15, 404C-22. Check it applies to your exact model before use.

Applies to: Perkins 403C-11, Perkins 403C-15, Perkins 404C-22

Before you start

  • Connections should be blanked off until assembly.

Procedure

  1. Loosen the vent screw on the fuel filter.
  2. Operate the hand primer until fuel, free of air, flows from the vent screw. Tighten the vent screw.
  3. Loosen the vent screw on the fuel injection pump. Operate the hand primer until fuel, free of air, flows. Tighten the vent screw.
  4. Attempt to start the engine using the starter motor for a maximum of 15 seconds, wait for 30 seconds before trying again.

Specs & values

  • Do not exceed continuous starter motor rotation of more than 15 seconds.

Full service-parts list: Perkins 403C-11 →, Perkins 403C-15 →, Perkins 404C-22 →

Source: Perkins 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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