COVER 4J4670 - Caterpillar

Illustration 1 g06085082
Table 1
Specification for 431-1482 Camshaft Gp
Item Qty Part Specification Description
- Before assembly of the camshaft to the cylinder block, apply a thin coat of green 8T-2998 Lubricant to the outer diameter of each camshaft journal and camshaft bearing.
1 8 2Y-5829 Nut Torque to 55 10 N m (41 7 lb ft).
A - - Diameter of the camshaft journal is 91.88 0.02 mm (3.617 0.001 inch).
2 5 311-8193 Bolt Torque to 73 12 N m (54 9 lb ft).
3 1 390-1692 Before assembly, apply green 8T-2998 Lubricant to the sides of the thrust washer. Apply a thin coat of green 8T-2998 Lubricant to the area of the camshaft bearing that is in contact with the groove of the thrust washer.
Thickness of new thrust washer is 18.50 0.05 mm (0.728 0.002 inch).
Width of the groove in new camshaft for thrust washer is 18.75 0.05 mm (0.738 0.002 inch).
Illustration 2 g06085057
Table 2
Item Qty Part Specification Description
B 1 6V-3535 Dowel Extension of the dowel from the end of the camshaft is 11.5 0.5 mm (0.45 0.02 inch).
4 8 109-3001 Taperlock Stud Torque to 35 5 N m (26 4 lb ft).
Illustration 3 g02873858
Table 3
Item Qty Part Specification Description
- - - Use the following procedure to determine the actual camshaft lobe lift:
1. Measure camshaft lobe height (D).
2. Measure the base circle (E).
3. Subtract the base circle (E) from the camshaft lobe height (D). The difference is the actual camshaft lobe lift (C).
C - - Specified camshaft lobe lift for:
Inlet lobe is 11.4017 mm (0.44888 inch).
Exhaust lobe is 17.0440 mm (0.67102 inch).