3500 Industrial Engines Caterpillar

Illustration 1	g01988553

(1) Before assembly, lubricate the threads of the pipe plug with 4C-5599 Anti-Seize Compound.

Use the following procedure to tighten the bolts of the cylinder head that is shown in Illustration 1:

Note: Before assembly, coat the threads of the bolt with clean engine oil.

1. Tighten the bolt 1 through bolt 8 in the numerical sequence to 30 ± 5 N·m (22 ± 4 lb ft).

2. Tighten the bolt 1 through bolt 8 in the numerical sequence to 100 ± 15 N·m (74 ± 11 lb ft).

3. Tighten the bolt 1 through bolt 8 in the numerical sequence to 450 ± 15 N·m (332 ± 11 lb ft).

4. Loosen the bolt 1 through bolt 8 in the numerical sequence to an angle of 90 ± 5 degrees.

5. Tighten the bolt 1 through bolt 8 in the numerical sequence to 410 ± 15 N·m (302 ± 11 lb ft).

Note: Tighten the bolts (2) only after the cylinder head bolts have been given final torque.

(2) Torque for the bolts ... 55 ± 10 N·m (41 ± 7 lb ft)

Illustration 2	g01413732

(A) Height of the new cylinder head ... 142.00 ± 0.15 mm (5.591 ± 0.006 inch)

Note: Before assembly, apply 6V-6640 Sealant to the bore of the cup plugs.

(B) Installation depth of the cup plugs from the surface of the cylinder head ... 9.0 ± 0.5 mm (0.35 ± 0.02 inch)

(D) Installation depth of the cup plugs from the surface of the cylinder head ... 1.0 ± 0.5 mm (0.04 ± 0.02 inch)