Cummins — 4, Magnetic pickup location (3/4-16 UNF) +1. 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).
- 7. Lubricating oll dipstick
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.