C27 and C32 Tier 4 Engines Caterpillar

Illustration 1	g02175062

Note: Use a centering tool in at least one oversize hole per manifold section in order to align the manifolds. Do not remove the centering tool until the locknuts are ready to be tightened. Refer to Illustration 1.

Note: Apply 4C-5599 Anti-Seize Compound to the threads of the locknuts before assembly.

1. Tighten all of the locknuts that secure the exhaust manifold to the engine block to a torque of 20 ± 3 N·m (15 ± 2 lb ft). Follow the numerical sequence that is shown in Illustration 1.

2. Tighten all of the locknuts that secure the exhaust manifold to the engine block to a torque of 38 ± 5 N·m (28 ± 4 lb ft). Follow the numerical sequence that is shown in Illustration 1.

Illustration 2	g02175160

(1) Torque for the clamps ... 7.5 ± 1 N·m (66 ± 9 lb in)

(2) Tighten the taperlock stud to the following torque: ... 35 ± 5 N·m (26 ± 4 lb ft)

Note: Apply 4C-5599 Anti-Seize Compound to the threads of the locknuts before assembly.

Note: Torque the nuts after the clamps are installed.

(3) Torque for the nuts ... 55 ± 5 N·m (41 ± 4 lb ft)