C27 and C32 Tier 4 Engines Caterpillar

Illustration 1	g02079518

(1) Tighten the taperlock studs 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.

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

(A) Orientation for the clamps is 90 ± 2 degrees.

(B) Orientation for the clamps is 32.5 ± 2 degrees.

Illustration 2	g02079880
View A-A

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 required to be tightened in the numerical sequence that is shown in Illustration 2.

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 2.

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 2.

Illustration 3	g02080054
View A-A

(1) Tighten the taperlock studs to the following: ... 35 ± 5 N·m (26 ± 4 lb ft)

(2) Torque for the clamps ... 7.5 ± 1 N·m (6 ± 1 lb ft)