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Perkins — How to prime the fuel system

Operation

From a Perkins owner's manual covering: 4000 Series, 4006-23 TAG1A, 4006-23 TAG2A, 4006-23 TAG3A. Check it applies to your exact model before use.

Applies to: Perkins 4006-23 TAG1A, Perkins 4006-23 TAG2A, Perkins 4006-23 TAG3A

Before you start

  • Clean away all fluid before the engine is started.

Procedure

  1. Turn on the fuel feed from the day tank and loosen the union on the tee-piece (A1).
  2. Operate the priming pump (A2) until fuel free from air flows from the union; tighten the union (A1) securely.
  3. Loosen the union on the fuel feed pipe (B1) at the flywheel end of the fuel rail (B3).
  4. Operate the priming pump (A2) until fuel free from air flows; tighten the union (B1) securely.
  5. Loosen the union (B2) and the fuel return union (B4).
  6. Operate the priming pump (A2) until fuel free from air flows from the unions; tighten the unions securely.

Tools required

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

Source: Perkins owner's 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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