3408C, 3412C and 3412D High Performance Marine Engines Caterpillar

Illustration 1	g01362841
Top view of the engine

(1) Fuel lines

Tighten the fuel line nuts.

Torque ... 40 ± 7 N·m (30 ± 5 lb ft)

(2) Lubricate the O-ring seal with diesel fuel.

Illustration 2	g01362847
View A-A

(3) Tighten the retainers to the following torque. ... 48 ± 7 N·m (35 ± 5 lb ft)

(4) Tighten the nut to the following torque. ... 30 ± 7 N·m (22 ± 5 lb ft)

(5) Lubricate the bore lightly with clean diesel fuel.

Illustration 3	g01362839

The clamps for the fuel line are installed at the values that follow.

Position (A) ... 564 ± 3 mm (22 ± 0.12 inch)

Position (B) ... 495 ± 3 mm (19.5 ± 0.12 inch)

Position (C) ... 429 ± 3 mm (17 ± 0.12 inch)

Position (D) ... 345 ± 3 mm (14 ± 0.12 inch)

Position (E) ... 275 ± 3 mm (11 ± 0.12 inch)

Position (F) ... 220 ± 3 mm (8.7 ± 0.12 inch)

Position (G) ... 215.2 mm (8.5 inch)

Position (H) ... 170 ± 3 mm (7 ± 0.12 inch)

Position (I) ... 155 ± 3 mm (6 ± 0.1 inch)

Position (J) ... 167 ± 3 mm (6.6 ± 0.121 inch)

Position (K) ... 53 ± 3 mm (2 ± 0.12 inch)

Position (L) ... 587 ± 3 mm (23 ± 0.12 inch)

Position (M) ... 486 ± 3 mm (19 ± 0.12 inch)

Position (N) ... 440 ± 3 mm (17 ± 0.12 inch)

Position (O) ... 425 ± 3 mm (17 ± 0.12 inch)

Position (P) ... 225 ± 3 mm (9 ± 0.12 inch)

Position (Q) ... 215.2 mm (8.5 inch)

Position (R) ... 205 ± 3 mm (8 ± 0.12 inch)

Position (S) ... 170 ± 3 mm (7 ± 0.12 inch)

Position (T) ... 85 ± 3 mm (3 ± 0.12 inch)

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Failure to properly replace or install a fuel injection line clamp may lead to fuel line failure. Fuel line failure may result in a fire hazard, which may cause personal injury or death. The fuel injection line clamps must be installed per these specifications.