BLOCK 4416252 - Caterpillar

Illustration 1 g01356572
(1) Exhaust valve
(2) Inlet valve Note: The inlet and exhaust valve stems must be coated with clean unused engine oil prior to installation in the cylinder head.Note: The tips of the inlet and exhaust valves must be coated with 8T-2998 Lubricant. The lubricant must be applied after assembly of the retainer. (3) 137-6718 Spring Length under test force ... 80.27 mm (3.160 inch)Test force ... 662 33 N (150 7.4 lb)Free length after test ... 92.08 mm (3.625 inch)Outside diameter ... 28.82 mm (1.135 inch) (4) 140-6188 Spring Length under test force ... 60.4 mm (2.38 inch)Test force ... 302.5 18.0 N (68.0 4.0 lb)Free length after test ... 67.5 mm (2.66 inch)Outside diameter ... 28.6 mm (1.13 inch) (5) Valve guide Outside diameter of new valve guides Inlet valve guides ... 13.030 0.008 mm (0.5130 0.0003 inch)Exhaust valve guides ... 16.000 0.008 mm (0.6299 0.0003 inch)Diameter of new valve guide bore Inlet valve guides ... 8.072 0.013 mm (0.3178 0.0005 inch)Exhaust valve guides ... 9.512 0.013 mm (0.3745 0.0005 inch)Note: Install the valve guide from the spring side of the cylinder head. Check the diameter of the valve guide bore for distortion after installation into the cylinder head. (6) Diameter of new valve stems Inlet valve stems ... 8.000 0.008 mm (0.3150 0.0003 inch)Exhaust valve stems ... 9.441 0.010 mm (0.3717 0.0004 inch)Note: The inlet valves and exhaust valves may be reused if the valve stems are not greater than the minimum diameters.Minimum diameter of a valve stem that is worn Inlet valve stems ... 7.965 mm (0.3136 inch)Exhaust valve stems ... 9.408 mm (0.3704 inch) (A) Height to the top of the valve guides after installation Inlet valve guides ... 23.0 0.5 mm (0.91 0.02 inch)Exhaust valve guides ... 17.8 0.5 mm (0.70 0.02 inch)Note: After you press the valve guide into the cylinder head, install the seal onto the top of the valve guide.Note: The inlet valve guides and the exhaust valve guides can be reused if the valve guide bores are not greater than the maximum diameters.Maximum diameter of a valve guide bore that is worn Bore of inlet valve guide ... 8.080 mm (0.3181 inch)Bore of exhaust valve guide ... 9.538 mm (0.3755 inch) (B) Diameter of the head of the valve for new valves Inlet valve head ... 40.00 0.13 mm (1.575 0.005 inch)Exhaust valve head ... 43.00 0.13 mm (1.693 0.005 inch) (C) Angle of the valve faces for new valves Inlet valve face ... 29.75 0.25 degreesExhaust valve face ... 45.0 0.25 degrees
Illustration 2 g01356581 (D) External diameter of