C27 and C32 Generator Set Engines Caterpillar


Flywheel Housing

Usage:

C27 2A3


Illustration 1g02568161
Rear view


Illustration 2g02568076
Tightening sequence

Table 1
Specification for 239-3646 Flywheel Housing Gp 
Item  Qty  Part  Specification Description 
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. 
Check assembled installation depth of the crankshaft seal group with the crankshaft at maximum rearward position. 
Use the following procedure to tighten the flywheel housing bolts. Tighten the bolts in the numerical sequence as shown in the Illustration 2. 
245-3803 Bolt  Tighten bolt (1) through bolt (2) to 55 ± 10 N·m (41 ± 7 lb ft)
2H-6488 Bolt  Tighten bolt (3) through bolt (10) to 135 ± 20 N·m (100 ± 15 lb ft)
24  0L-1143 Bolt  Tighten bolt (11) through bolt (34) to 47 ± 9 N·m (35 ± 7 lb ft)
The seal and the sleeve of the crankshaft seal group must not be used if the seal and the sleeve have been separated. 
The seal driver must not contact the seal within the 177.80 ± 0.25 mm (7.000 ± 0.010 inch) diameter.
Distance from the sleeve to the seal is 6.15 to 6.55 mm (0.242 to 0.258 inch)
Installation depth of the sleeve from the rear face of the crank shaft is 1.5 ± 0.5 mm (0.06 ± 0.02 inch)

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