3406B INDUSTRIAL & MARINE ENGINES Caterpillar

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Be sure the fuel injection line clamps are installed in the correct locations. Incorrectly installed clamps may allow the injection lines to vibrate and become damaged. The damaged lines may leak and cause a fire.

(1) Clamp location dimensions are in reference to a vertical line (1) through the center of the number one fuel pump outlet.

(2) Tighten fuel injection line nuts to ... 40 ± 7 N·m (30 ± 5 lb.ft.)

NOTE: Hold adapter assembly in position at top of injection nozzle when fuel line nut is loosened or tightened.

(3) Tighten nuts to ... 14 ± 3 N·m (10 ± 2 lb.ft.)