Detroit Diesel Series 60 Fuel Pump Weep Hole Leaks

Technical Service Bulletin No. 05 TS – 11

April 18, 2005

Issue:

Unnecessary replacement of fuel pumps.

Cause:

Misdiagnosis of fuel pump weep hole leaks.

Required Action:

Verify fuel pump leakage as follows:

  1. Use a rag to remove oil and road grime from engine block and fuel pump weep hole area.
  2. Place a clean rag or white blotter paper below the fuel pump to catch any leakage from the weep hole.
  3. Run the engine for a maximum of 15 minutes at 600 RPM and visually check the rag or blotter paper for drips from the weep hole.
  4. If drips were not observed on the rag or blotter paper, fuel pump replacement is not necessary. If one or more drips from the fuel pump weep hole are observed, record the number of drips and replace the fuel pump. Include the number of drips observed in the warranty claim.

Additional Information:

See page from the fuel pump of 1-2 ml per week is normal. Leaks at the fuel pump-mounting flange to the air compressor or from fuel pump fittings or lines should be fixed immediately. Refer to the Series 60 Service Manual (6SE483) for additional information.

Jimmy Finch

Dallas Branch Manager, M&D Distributors

Jimmy Finch has over 33 years of experience in Diesel Engine Sales, Service and Repair. His experience started early in life at Texas Fuel Injection Service (an early acquisition of M&D) as a job with a means to an end. Somewhere in that 33 years this job turned into a fulfilling career. He started in the injector clean up department and has held practically every position leading up to his current role as Branch Manager of the Dallas, Texas location.

In his spare time, Jimmy enjoys spending time with his wife of 24 years, Priscilla. They are currently getting ready to make their way into the empty-nesters stage of life. He also enjoys the occasional hunting trip with friends and family and chasing down potential customers by the names off their trucks.

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