SPIDER 9R2491 - Caterpillar

Illustration 1 g02590237
Table 1
Specification for 223-6431 Cylinder Head Gp
Item Qty Part Specification Description
1 24 211-3123 Spring Length under test force is 67.12 mm (2.643 inch).
Test force is 320 25 N (71.9 5.6 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 (33.7 2.7 lb).
Approximate free length after test is 71.70 mm (2.823 inch).
3 24 122-7375 Valve Guide Height (A) to the step that is in the valve guide is 35.0 0.5 mm (1.38 0.02 inch).
Apply 1E1867B to the inner diameter of the valve guides immediately prior to the installation of inlet valve (4) and exhaust valve (5) into the cylinder head.
4 12 153-7023 Inlet Valve Diameter is 47.00 0.13 mm (1.850 0.005 inch).
Valve stem diameter is 9.441 0.010 mm (0.3717 0.0004 inch).
Face angle is 29.25 0.25 degrees.
5 12 153-7024 Exhaust Valve Diameter is 41.81 0.13 mm (1.646 0.005 inch).
Valve stem diameter is 9.441 0.010 mm (0.3717 0.0004 inch).
Face angle is 45.75 0.25 degrees.
Shrink the valve seat inserts by reducing the temperature. Shrinking the valve seat inserts allows placement into the counterbore.
6 12 224-3983 Seat Insert Face angle is 30.25 0.25 degrees.
Depth of the bore in the cylinder head is 14.00 0.05 mm (0.551 0.002 inch).
Outside diameter is 48.025 0.013 mm (1.8907 0.0005 inch).
Bore in the cylinder head is 47.950 0.025 mm (1.8878 0.0010 inch).
7 12 226-5561 Valve Seat Insert Face angle is 45.25 0.25 degrees.
Depth of the bore in the cylinder head is 13.90 0.05 mm (0.547 0.002 inch).
Outside diameter is 42.840 0.013 mm (1.6866 0.0005 inch).
Bore in the cylinder head is 42.774 0.025 mm (1.6840 0.0010 inch).