C9 On-highway Engine Caterpillar

Illustration 1	g01523526

Note: The sealing surfaces of the oil pan shall be free of oil, debris, gasket material that is protruding, or any other sealant. The oil pan must be assembled and tightened to the cylinder block within ten minutes of applying sealant.

Use the following procedure to install the oil pan:

1. Apply 4C-9612 Silicone Sealant to a bead of 5 mm (0.2 inch) at four places (2) on the sealing surface of the oil pan. The sealing surfaces are the following areas:
   • Connecting joint of the flywheel housing and the rear of the cylinder block

   • Connecting joint of the front housing and the front of the cylinder block

2. Tighten four bolts (1) to standard torque.

3. Start with bolt (3) and tighten all the remaining bolts in a counterclockwise sequence to standard torque.

4. Again start with bolt (3) and tighten all the bolts in a counterclockwise sequence to 31 ± 3 N·m (23 ± 2 lb ft).

(4) Torque for drain plug ... 70 ± 15 N·m (50 ± 11 lb ft)

(5) Torque for O-ring plug ... 90 ± 15 N·m (65 ± 11 lb ft)