FITTING 3H0121 - Caterpillar

Illustration 1 g03365736
Illustration 2 g03365737
Bolt Tightening sequence
Table 1
Specification for 353-9858 Flywheel Housing Gp
Item Qty Part Specification Description
During assembly, inspect the following components for any foreign materials: The front face of the flywheel housing, the two sides of the flywheel housing gasket and the rear face of the cylinder block. These components must be free of the following substances: oil, fuel, water, gasket adhesive, assembly compounds, and any other foreign material.
Apply a small amount of 1U-8846 Gasket Sealant in order to fill the space between the cylinder block, the flywheel housing, and the oil pan before installing the oil pan gasket and the oil pan. The components must be assembled within 20 minutes of applying the gasket sealant.
Use the following procedure to tighten the flywheel housing bolts:
1 4 165-3932 Bolt 1. Tighten bolt (1) through bolt (9) in a numerical sequence as shown in Illustration2 to 100 20 N m (74 15 lb ft) .
2. Tighten bolt (10) through bolt (22) in a numerical sequence as shown in Illustration2 to 40 10 N m (30 7 lb ft). Bolt (14) and bolt (15) are located behind the idler gear.
3. Again, tighten bolt (1) through bolt (9) in a numerical sequence as shown in Illustration2 to 135 20 N m (100 15 lb ft).
4. Again, tighten bolt (10) through bolt (22) in a numerical sequence as shown in Illustration2 to 55 10 N m (41 7 lb ft).
2 3 223-4903 Bolt
3 1 5J-5793 Bolt
4 6 165-3930 Bolt
5 8 8D-0648 Bolt