PIN 1134708 - Caterpillar

Illustration 1 g06352370Note: Coat the inlet valve stems and the exhaust valve stems with 8T-2998 Lubricant prior to installation into the cylinder head. (1) Inlet valve (2) Exhaust valve (A) Height to the step that is in the valve guide ... 22.00 0.50 mm (.866 .020 inch) (3) 224-4441 SpringAssembled Length ... 50.47 mm (1.987 inch)Load at assembled length ... 160 13 N (36 3 lb)Operating length (minimum) ... 34.92 mm (1.37 inch)Load at minimum operating length ... 385 18 N (87 4 lb)Free length after test ... 64.1 mm (2.52 inch)Outside diameter ... 23.24 mm (0.915 inch) (4) 214-0586 SpringAssembled Length ... 52.95 mm (2.085 inch)Load at assembled length ... 320 31 N (72 7 lb)Operating length (minimum) ... 37.40 mm (1.472 inch)Load at minimum operating length ... 860 34 N (190 7 lb)Free length after test ... 62.7 mm (2.47 inch)Outside diameter ... 34.0 mm (1.33 inch) (B) New valve stem diameter ... 9.441 0.008 mm (.3717 .0003 inch)The valves can be reused if the minimum dimensions for the valve stems are met.Inlet ... 9.309 mm (0.3665 inch)Exhaust ... 9.309 mm (0.3665 inch)Specifications for the valve guidesAfter installation into the cylinder head, the valve guide bore is the following value. ... 9.484 0.026 mm (.3734 .0010 inch)The valve guide can be reused. The valve guide bore must not be larger than the following value. ... 9.538 mm (.3755 inch) (C) Diameter of valve headInlet valve ... 45.00 0.13 mm (1.772 .005 inch)Exhaust valve ... 42.00 0.13 mm (1.654 .005 inch) (D) Angle of face of valve seat insertInlet valve ... 29.25 ° .25 °Exhaust valve ... 45.25 ° .25 °
Illustration 2 g01416218 (E) Depth of the bore in the cylinder head for the valve seat insertInlet ... 15.00 0.05 mm (.591 .004 inch)Exhaust ... 14.10 0.05 mm (.555 .004 inch)Note: Shrink the valve seat inserts by reducing the temperature. Shrinking the valve seat inserts allows placement into the counterbore. (F) Valve seat insertDiameter of valve seat insert (inlet valve) ... 46.025 0.013 mm (1.8120 .0005 inch)Bore in cylinder head for valve seat insert (inlet valve) ... 45.961 0.013 mm (1.8095 .0005 inch)Diameter of valve seat insert (exhaust valve) ... 43.390 0.015 mm (1.7083 .0006 inch)Bore in cylinder head for valve seat insert (exhaust valve) ... 43.320 0.025 mm (1.7055 .0010 inch) (G) Angle of valve faceAngle of the face of the inlet valve ... 29 1/4 1/4 degreesAngle of the face of the exhaust valve ... 44 1/4 1/4 degrees (H) Minimum thickness of the valve lipInlet valve ... 2.51 mm (.099 inch)Exhaust valve ... 2.03 mm (.080 inch)
Illustration 3 g01433254 (J) Maximum variation of the valve stem lengthInlet valve to inlet valve ... 0.66 mm (.026 inch)Exhaust valve to exhaust valve ... 0.66 mm (0.026 inch)