TUBE AS 1043826 - Caterpillar

Illustration 1 g00883943
(1) End play of a new camshaft ... 0.10 to 0.41 mm (0.004 to 0.016 inch)Maximum permissible end play of a worn camshaft ... 0.53 mm (0.021 inch) (2) Camshaft thrust washer Thickness of thrust washer ... 5.49 to 5.54 mm (0.216 to 0.218 inch) Depth of the recess in the cylinder block for the thrust washer ... 5.46 to 5.54 mm (0.215 to 0.218 inch) Tolerance of the thrust washer in cylinder block front face ... -0.05 to +0.08 mm (-0.002 to +0.003 inch) (3) Camshaft journal
Table 1
Diameter of Camshaft Journals for 3054 Engines    
Camshaft Journal     Standard Diameter    
1    
50.71 to 50.74 mm (1.9965 to 1.9975 inch)    
2    
50.46 to 50.48 mm (1.9865 to 1.9875 inch)    
3    
49.95 to 49.98 mm (1.9665 to 1.9675 inch)    
Table 2
Diameter of Camshaft Journals for 3056 Engines    
Camshaft Journal     Standard Diameter    
1    
50.71 to 50.74 mm (1.9965 to 1.9975 inch)    
2    
50.46 to 50.48 mm (1.9865 to 1.9875 inch)    
3    
50.20 to 50.23 mm (1.9764 to 1.9775 inch)    
4    
49.95 to 49.98 mm (1.9665 to 1.9675 inch)    Maximum permissible wear of the camshaft journals ... 0.05 mm (0.002 inch)Internal clearance of the camshaft journals ... 0.06 to 0.14 mm (0.0025 to 0.0055 inch)
Illustration 2 g00883945
(4) Camshaft lobe lift Inlet lobe ... 7.62 to 7.69 mm (0.2999 to 0.3029 inch) Exhaust lobe ... 7.71 to 7.79 mm (0.3036 to 0.3066 inch) (5) Camshaft lobe height (6) Base circleTo determine the lobe lift, use the procedure that follows:
Measure the camshaft lobe height (5) .
Measure the base circle (6) .
Subtract the base circle that is found in Step 2 from the camshaft lobe height that is found in Step 1. The difference is the actual camshaft lobe lift.Maximum permissible clearance between the actual lobe lift and the specified lobe lift of a new camshaft ... 0.05 mm (0.002 inch)