CAP. 1S7890 - Caterpillar

Illustration 1 g03369757
Table 1
Specification for 381-8743 Camshaft Gp
Item Qty Part Specification Description
1 4 8T-0338 Bolt Torque to 35 8 N m (26 6 lb ft).
Illustration 2 g03369759
348-9820 Camshaft
Table 2
Item Qty Part Specification Description
B - - Diameter of camshaft bearing journal is 77.850 0.025 mm (3.0650 0.0010 inch).
2 - - Maximum exhaust lobe lift at zero degrees is 9.41655 mm (0.37073 inch).
3 - - Maximum injector lobe lift at zero degrees is 14.21529 mm (0.55966 inch).
4 - - Maximum inlet lobe lift at zero degrees is 12.60667 mm (0.49632 inch).
- - - Use the following procedure to find the actual lobe lift (C):
1. Measure the camshaft lobe height (D).
- - - 2. Measure the base circle (E).
- - - 3. Subtract the base circle measurement in step 2 from the camshaft lobe height in step 1. The difference is the actual lobe lift.
- - - The maximum permissible difference between the actual lobe lift in step 3 and the specified camshaft lobe lift of a new camshaft is 0.10 mm ( 0.0034 inch).