SWITCH-FNR 3443271 - Caterpillar

Illustration 1 g01445699
Note: Before installation of valves into the cylinder head, lubricate the inlet valve stem and the exhaust valve stem with clean engine oil. (A) Height to the step in the valve guide ... 20.0 0.5 mm (0.79 0.02 inch)
Illustration 2 g01445692
Inlet valve (1) Inlet valve (B) Valve stem diameter ... 9.441 0.008 mm (0.3717 0.0003 inch) (C) Valve face angle ... 60.75 0.25 degrees (D) Diameter of the valve head ... 44.50 0.13 mm (1.752 0.005 inch) (E) Valve lip thickness ... 3.50 0.20 mm (0.138 0.008 inch) (2) 224-4441 Spring Length under test force ... 50.47 mm (1.987 inch) Test force ... 160 13 N (36.0 2.9 lb) Approximate free length after test ... 64.1 mm (2.52 inch) Outside diameter ... 23.24 mm (0.915 inch)
Illustration 3 g01445690
Exhaust valve (3) Exhaust valve (F) Valve stem diameter ... 9.441 0.008 mm (0.3717 0.0003 inch) (G) Valve face angle ... 45.75 0.25 degrees (H) Diameter of the valve head ... 41.50 0.13 mm (1.634 0.005 inch) (J) Valve lip thickness ... 3.25 0.10 mm (0.128 0.004 inch) (4) 332-2152 Spring Length under test force ... 52.95 mm (2.085 inch) Test force ... 320 31 N (71.9 7.0 lb) Approximate free length after test ... 62.7 mm (2.47 inch) Outside diameter ... 34.0 mm (1.34 inch)Note: Before installing the valve guides, apply clean engine oil to the valve guide bore. (5) Valve guide Bore of the installed valve guide ... 9.508 0.013 mm (0.3743 0.0005 inch) Maximum recommended diameter of the valve guide bore ... 9.544 mm (0.3757 inch)Note: Do not use a combination of a valve and a valve guide that has a difference of 0.13 mm (0.005 inch) or more. (6) Inlet valve insert Angle of the valve insert ... 29.75 0.25 degrees Diameter of the valve insert ... 45.525 0.013 mm (1.7923 0.0005 inch) Bore in the cylinder head for the valve insert ... 45.461 0.015 mm (1.7898 0.0006 inch) (7) Exhaust valve insert Angle of the valve insert ... 44.75 0.25 degrees Diameter of the valve insert ... 42.390 0.015 mm (1.6689 0.0006 inch) Bore in the cylinder head for the valve insert ... 42.320 0.015 mm (1.6661 0.0006 inch)