3408C and 3412C Marine Engines Caterpillar


Flywheel Housing

Usage:

3412 60M



Illustration 1g01377443

Rear view




Illustration 2g01377455

Left side view

(1) Apply 154-9731 Thread Lock Compound to stud serration and both sides of gasket before assembly.

(2) Torque for the drain plug ... 55 ± 14 N·m (41 ± 10 lb ft)

(3) The front face of the flywheel housing and the rear face of the cylinder block must be free of oil, fuel, water, dirt and any other contaminants during assembly.




Illustration 3g01392827

View A-A

(4) The pipe plug must not protrude above the surface after assembly.

(5) Apply a continuous bead of 4C-9612 Silicone Sealant immediately prior to assembling the flywheel housing. After assembly of the flywheel housing, remove any excess sealant from the flange with a straight edge.




Illustration 4g01392832

(6) Cylinder block

(7) Apply 4C-9612 Silicone Sealant to the T-shaped joints immediately prior to the installation of the gasket for the pan. The application of the sealant should cover the entire width of the T-shaped joints, as shown.




Illustration 5g01377457

Tightening sequence

Use the following procedure to tighten the bolts for the flywheel housing:

  1. Tighten bolts (1) through bolts (17) in a numerical sequence.

    Torque ... 40 ± 10 N·m (30 ± 7 lb ft)

  1. Again tighten bolts (1) through bolts (8) in a numerical sequence.

    Torque ... 135 ± 20 N·m (100 ± 15 lb ft)

  1. Again tighten bolts (9) through bolts (17) in a numerical sequence.

    Torque ... 55 ± 10 N·m (41 ± 7 lb ft)

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