C27 and C32 Industrial and Petroleum Engines Flywheel Housing Caterpillar

Illustration 1	g01420415
Rear view of engine

Note: The front face of the flywheel housing group and the rear face of the rear housing must be free of oil, fuel, water, assembly compounds and any other contaminants during assembly. The gasket for the flywheel housing group must be free of contaminants during assembly.

Use the following procedure to tighten the bolts for the flywheel housing group:

1. Torque the bolt (1) and 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. Torque 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. Torque 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	g01426886
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)