Cummins Marine Fuel Filter Backing from Fuel Filter Head in Marine Applications (B4.5 & QSB 6.7 Engines)

After observing many occurrences of the on-engine fuel filters “dropping” off of the filter head on Cummins Marine QSB 6.7 and B4.5 engines, Cummins issued a Technical Service Bulletin (TSB) TSB240112 that both shows how to assess the issue and … Read More

6BTA 5.9 & QSB Series Belt Wrap Configurations

6BTA 5.9 & QSB Series Belt Wrap Configurations

Cummins Marine EP9 Nippon Denso Fuel Solenoids

EP9 Fuel Solenoids There are two types of external fuel Nippon Denso EP9 injection pump solenoids that I have seen used on the marine engines by Cummins.  Pics  below:            “NUB” style                             Ball Joint Style                       Note: Both … Read More

Pictures of “upside down” Sherwood 1722 & 1727 Seawater Pumps

SAE Pump Motor Mounting Flanges and Shafts

SAE PTO Pad Pump Motor Mounting Flanges and Shaft Specifications

Delphi CAV Injection Pump Cylinder Numbering

Delphi CAV Injection Pump Cylinder Numbering

Understanding the Cummins Marine QSB 6.7 Serpentine Belt System

Cummins Mechanical B & C Coolant and Raw Water Flow Diagrams

Cummins Mechanical B & C Coolant and Raw Water Flow Diagrams

EP9 Nippon Denso Injection Pump Throttle Linkage

EP9 Nippon Denso Injection Pump Throttle Linkage

QSB 5.9 Walker Airsep

Learning your Cummins Marine QSB 5.9 Engine

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