VALVE GP-RELIEF 9T7419 - Caterpillar

Illustration 1 g01416580
Section view of the cylinder head valves
(1) Inlet valve
(2) Exhaust valve Note: Coat the inlet valve stems and the exhaust valve stems with 8T-2998 Lubricant prior to installation into the cylinder head. (A) Height to the valve guide above the top surface of the cylinder head ... 12.0 0.5 mm (0.47 0.02 inch) (3) 190-6117 Spring Length under test force ... 37.70 mm (1.484 inch)Test force ... 350 17 N (78.7 3.8 lb)Approximate free length after test ... 57.80 mm (2.276 inch)Outside diameter ... 31.79 mm (1.252 inch) (4) 190-6115 Spring Length under test force ... 36.5 mm (1.44 inch)Test force ... 187 8 N (42.0 1.8 lb)Approximate free length after test ... 57.80 mm (2.276 inch)Outside diameter ... 23.18 mm (0.913 inch) (B) New valve stem diameter ... 9.441 0.010 mm (0.3717 0.0004 inch) (E) Diameter of valve heads ... 36.00 0.13 mm (1.417 0.005 inch)
Illustration 2 g01416603
View of area C
(F) Angle of face of inlet valve seat insert ... 65.00 0.25 degrees
Illustration 3 g01416597
View of area D
(G) Angle of face of exhaust valve seat insert (first cut) ... 20 1 degrees (H) Angle of face of exhaust valve seat insert (second cut) ... 45.00 0.25 degrees
Illustration 4 g01416605 (J) Depth of the bore in the cylinder head for the valve seat insert Inlet ... 9.50 0.05 mm (0.374 0.002 inch)Exhaust ... 12.00 0.05 mm (0.472 0.002 inch)Note: Shrink the valve seat inserts by reducing the temperature. Shrinking the valve seat inserts allows placement into the counterbore. (K) Angle of valve face Inlet valve ... 60.50 0.25 degreesExhaust valve ... 45.75 0.25 degrees (L) Bore in cylinder head for valve seat insert Inlet valve ... 37.000 0.015 mm (1.4567 0.0006 inch)Exhaust valve ... 37.500 0.015 mm (1.4764 0.0006 inch) (M) Outside diameter of the valve seat insert Inlet valve ... 37.060 0.013 mm (1.4591 0.0005 inch)Exhaust valve ... 37.560 0.013 mm (1.4787 0.0005 inch)