KIT- 4575257 - Caterpillar

Illustration 1 g03538778
Table 1
Specification for 486-6227 Cylinder Head Gp
Item Qty Part Specification Description
1 12 252-7802 Inlet Valve Apply clean engine oil to the stem prior to installation.
Diameter (B) is 9.441 0.008 mm (0.3717 0.0003 inch)
Face angle (D) is 60.75 0.25 degrees
Valve head diameter (F) is 44.50 0.13 mm (1.752 0.005 inch)
2 12 394-4400 Exhaust Valve Apply clean engine oil to the stem prior to installation.
Diameter (C) is 9.441 0.010 mm (0.3717 0.0004 inch)
Face angle (E) is 45.75 0.25 degrees
Valve head diameter (G) is 41.50 0.13 mm (1.634 0.005 inch)
3 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)
4 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)
5 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 (A) from the cylinder head surface to the step of the valve guide is 20.0 0.5 mm (0.79 0.02 inch)
6 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)
Installation depth for valve seat insert is 6.40 0.11 mm (0.251 0.004 inch).
7 12 300-3566 Valve Seat Insert Insert angle is 44.75 0.25 degrees
Outer diameter is 42.390 0.013 mm (1.6689 0.0005 inch)
Bore in the cylinder head is 42.320 0.015 mm (1.6661 0.0006 inch)
Installation depth for valve seat insert is 4.80 0.11 mm (0.188 0.004 inch).