C27 and C32 Tier 4 Engines Caterpillar

Illustration 1	g01609413
Rear view of the engine

Note: Before installation of the flywheel housing, inspect the front face of the flywheel housing and the rear face of the rear housing. The components must be free of the following substances: oil, fuel, water, assembly compounds and any other contaminants

Use the following procedure to tighten the flywheel housing bolts:

1. Tighten the bolt (1) through bolt (2) in the numerical sequence that is shown in Illustration 1 to 55 ± 10 N·m (41 ± 7 lb ft). These bolts are 3/8-16 X 4 3/4 inches.

2. Tighten the bolt (3) through bolt (10) in the numerical sequence that is shown in Illustration 1 to 135 ± 20 N·m (100 ± 15 lb ft). These bolts are 1/2-13 X 5 inches.

3. Tighten the bolt (11) through bolt (34) in the numerical sequence that is shown in Illustration 1 to 47 ± 9 N·m (35 ± 7 lb ft). These bolts are 3/8-16 X 2 1/2 inches.

Illustration 2	g01609414
Section A-A

Note: Check assembled installation depth of the crankshaft seal group with the crankshaft at maximum rearward position.

(B) Assembled installation depth of the crankshaft seal group ... 6.52 ± 0.13 mm (0.257 ± 0.005 inch)

Note: The seal and the sleeve of the crankshaft seal group must not be used if the seal and the sleeve have been separated.

(35) The seal driver must not contact the seal within the following diameter. ... 177.80 ± 0.25 mm (7.000 ± 0.010 inch)