HARNESS AS-ENGINE 3989259 - Caterpillar

Illustration 1 g01344855
Typical example
The valve spring (1) may be used on the inlet valve or the exhaust valve. When the valve springs are replaced the valve springs must be replaced in pairs. (1) Valve springs Assembled length ... 40.68 mm (1.6016 inch)Load at assembled length ... 155.05 7.75 N (35 2 lb)Operating length (minimum) ... 20.2 mm (0.7953 inch)Load at minimum operating length ... 312 15.6 N (70 4 lb)Free length after test ... 40.68 mm (1.6016 inch)Inside diameter ... 19.5 0.25 mm (0.7677 0.0098 inch)
Illustration 2 g01344859 (A) Valve face angle Inlet ... 60 degreesExhaust ... 45 degrees (B) Length of valve Inlet valve ... 108.15 mm (4.2579 inch)Exhaust valve ... 107.928 mm (4.2491 inch) (C) Valve stem diameter Inlet ... 5.942 to 5.957 mm (0.2339 to 0.2345 inch)Exhaust ... 5.927 to 5.942 mm (0.2333 to 0.2339 inch) (D) Valve head Diameter of inlet valve head ... 35 0.12 mm (1.3780 0.0047 inch)Diameter of exhaust valve head ... 33 0.12 mm (1.2992 0.0047 inch)