BEARING-COVER 4680643 - Caterpillar

Illustration 1 g06346020
Typical example
Table 1
Item Qty Part Specification Description
1 24 247-9908 Spring Length under test force is 67.12 mm (2.643 inch).
Test force is 320 25 N (72 6 lb).
Approximate free length after test is 76.70 mm (3.020 inch).
2 24 211-3122 Spring Length under test force is 60.14 mm (2.368 inch).
Test force is 150 12 N (34 3 lb).
Approximate free length after test is 71.70 mm (2.823 inch).
A - - Height from top of the cylinder head to the top of the valve guides is 35.0 0.5 mm (1.38 0.02 inch).
3 24 122-7375 Valve Guide Apply clean engine oil to the bore before assembly.
Bore in the valve guide for valves is 9.502 0.013 mm (0.3741 0.0005 inch).
4 12 490-7200 Exhaust Valve Apply clean engine oil to the valve stems prior to installation in the cylinder head.
Face angle is 45.75 0.25 degrees.
Stem diameter is 9.441 0.010 mm (0.3717 0.0004 inch).
Valve head diameter is 41.81 0.13 mm (1.646 0.005 inch).
5 12 490-7198 Inlet Valve Apply clean engine oil to the valve stems prior to installation in the cylinder head.
Face angle is 60.75 0.25 degrees.
Stem diameter is 9.441 0.010 mm (0.3717 0.0004 inch).
Valve head diameter is 47.00 0.13 mm (1.850 0.005 inch).
6 12 226-5561 Valve Seat Insert Face angle is 45.25 0.25 degrees.
Outside diameter is 42.840 0.013 mm (1.68661 0.00051 inch).
Bore in the cylinder head for valve seat insert is 42.774 0.025 mm (1.6840 0.0010 inch).
Depth of bore in the cylinder head for seat insert is 13.90 0.05 mm (0.547 0.002 inch).
7 12 280-3979 Valve Seat Insert Face angle is 30.25 0.25 degrees.
Outside diameter is 48.025 0.013 mm (1.8907 0.0005 inch).
Bore in the cylinder head for seat insert is 47.950 0.025 mm (1.8878 0.0010 inch).
Depth of bore in the cylinder head for seat insert is 14.00 0.05 mm (0.551 0.002 inch).