C11 and C13 Engines Cylinder Head Valves Caterpillar


Cylinder Head Valves
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Illustration 1g06422744

Table 1
Item  Qty  Part  Specification Description 
12  252-7802 Inlet Valve  Apply clean engine oil to the stem prior to installation.
Diameter (D2) is 9.441 ± 0.008 mm (0.3717 ± 0.0003 inch)
Face angle (D4) is 60.75 ± 0.25 degrees
Valve head diameter (D6) is 44.50 ± 0.13 mm (1.752 ± 0.005 inch) 
12  248-1467 Exhaust Valve  Apply clean engine oil to the stem prior to installation.
Diameter (D3) is 9.441 ± 0.008 mm (0.3717 ± 0.0003 inch)
Face angle (D5) is 45.75 ± 0.25 degrees
Valve head diameter (D7) is 41.50 ± 0.13 mm (1.634 ± 0.005 inch) 
24  224-4441 Spring  Length under test force is 50.47 mm (1.987 inch)
Test force is 160 ± 13 N (36 ± 3 lb)
Approximate free length after test is 64.1 mm (2.52 inch) 
24  332-2152 Spring  Length under test force is 52.95 mm (2.085 inch)
Test force is 320 ± 31 N (72 ± 7 lb)
Approximate free length after test is 62.7 mm (2.47 inch) 
24  268-2953 Valve Guide  Apply clean engine oil to the bore prior to installation.
Bore before assembly is 9.508 ± 0.013 mm (0.3743 ± 0.0005 inch)
Installation height (D1) from the cylinder head surface to the step of the valve guide is 20.0 ± 0.5 mm (0.79 ± 0.02 inch) 
12  260-4855 Valve Seat Insert  Insert angle is 29.75 ± 0.25 degrees
Outer diameter is 45.525 ± 0.013 mm (1.7923 ± 0.0005 inch)
Bore in the cylinder head is 45.461 ± 0.015 mm (1.7898 ± 0.0006 inch) 
12  224-1270 Valve Seat Insert  Insert angle is 44.75 ± 0.25 degrees
Outer diameter is 42.390 ± 0.015 mm (1.6689 ± 0.0006 inch)
Bore in the cylinder head is 42.320 ± 0.015 mm (1.6661 ± 0.0006 inch)