Cummins — 4, Magnetic pickup location (3/4~-16 UNF) 11. High pressure fuel lines
A Cummins service procedure — check it applies to your exact model before use.
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Procedure
- 5. Fuel lift pump 12, Fuel injection pump
- 6. Crankcase breather tube 13, Intake air preheater (optional).
Source: manual:Cummins Diesel B Series Manual 2003 (2).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.