3406E and 3456 Industrial Engines – Cylinder Head

The bolts that are marked “X” are 216 mm (8.5 inch) long. The lengths of the remaining bolts are 194 mm (7.6 inch) long.

Apply 6V-4876 Lubricant to the bolt threads and both sides of the washers. Tighten the bolts in the following step sequence:

1. In a numerical sequence, tighten bolts 1 through 26.

   Torque for bolts … 270 ± 15 N·m (200 ± 11 lb ft)

2. In a numerical sequence, tighten bolts 1 through 26.

   Torque for bolts … 450 ± 15 N·m (330 ± 11 lb ft)

3. In a numerical sequence, again tighten bolts 1 through 26.

   Torque for bolts … 450 ± 15 N·m (330 ± 11 lb ft)

Note: The flatness of the cylinder head should be within a total of 0.13 mm (.005 inch). Also, the flatness of the cylinder head should be within a maximum of 0.05 mm (.002 inch) for any 150 mm (6.0 inch) span.

(A) Cylinder Head Thickness

Thickness of a new cylinder head … 120.00 ± 0.15 mm (4.724 ± 0.006 inch)

Minimum thickness of a used cylinder head … 119.50 mm (4.705 inch)

Orientation of bearing joint (B) … 20° ± 5° above horizontal

(C) Diameter of camshaft bore … 90.985 ± 0.020 mm (3.5821 ± 0.0008 inch)

The depth of installation of the sleeve bearings is important. Install sleeve bearings (4) to the following depths:

Dimension (D) … 8.0 ± 0.5 mm (0.31 ± 0.02 inch)

Dimension (E) … 178.1 ± 0.5 mm (7.01 ± 0.02 inch)

Dimension (F) … 349.5 ± 0.5 mm (13.76 ± 0.02 inch)

Dimension (G) … 521.0 ± 0.5 mm (20.51 ± 0.02 inch)

Dimension (H) … 692.4 ± 0.5 mm (27.26 ± 0.02 inch)

Dimension (J) … 863.8 ± 0.5 mm (34.01 ± 0.02 inch)

Dimension (K) … 1035.3 ± 0.5 mm (40.76 ± 0.02 inch)