C7 Marine Engine Caterpillar


Cylinder Head

Usage:

C7 C7B



Illustration 1g01385905

Use the following procedure to install the bolts:

  1. Tighten bolt (1) through bolt (14) in a numerical sequence.

    Tighten the bolts to the following torque. ... 300 ± 15 N·m (220 ± 10 lb ft)

  1. Loosen bolt (1) through bolt (14) until the washers are loose under the bolt heads.

  1. Tighten bolt (1) through bolt (14) in a numerical sequence.

    Tighten the bolts to the following torque. ... 130 ± 15 N·m (95 ± 10 lb ft)

  1. Retighten bolt (1) through bolt (14) in a numerical sequence.

    Tighten the bolts to the following torque. ... 130 ± 15 N·m (95 ± 10 lb ft)

  1. Turn bolt (1) through bolt (14) in a numerical sequence.

    Turn the bolts to the following value. ... 90 degrees (1/4 turn)

    Note: Lubricate the bolt threads, the underside of the bolt heads, and the washers with 4C-5591 Anti-Seize Compound prior to assembly.

  1. Tighten bolt (15) through bolt (20) in a numerical sequence.

    Tighten the bolts to the following torque. ... 55 ± 7 N·m (41 ± 5 lb ft)




Illustration 2g01395444

(21) Apply 6V-6640 Sealant to the bore (21) prior to assembly. The installation depth of the cup plug is measured from the face of the cylinder head to the top edge of the plug. Depth of installation ... 1.25 ± 0.25 mm (0.049 ± 0.010 inch)

(22) Apply 4C-9506 Retaining Compound to the first three threads of the plugs. Tighten the plugs to the following torque. ... 184 ± 18 N·m (136 ± 13 lb ft)

(A) Height of new cylinder head ... 158 ± 0.15 mm (6.220 ± 0.006 inch)




Illustration 3g01395453

(C) Apply 9S-3263 Thread Lock Compound to the cylinder head at location (B) .




Illustration 4g01395456

(24) Tighten a new 154-8025 Socket Setscrew (orifice) that has the dry Loctite into location (24) . Tighten the socket setscrew (orifice) to the standard torque.

The new 154-8025 Socket Setscrew and the former 142-7290 Socket Setscrew (orifice) may be reused. Apply 154-9731 Thread Lock Compound to the threads of the socket setscrew (orifice). Tighten the socket setscrew (orifice) to the standard torque.

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