PISTON & ROD GP 4P7472 - Caterpillar

GUIDELINE FOR REUSABLE PARTS; VALVES AND VALVE SPRINGS, Forms SEBF8002 and SEBF8034, have the procedure and specifications necessary for checking used valves and valve springs. (1) 9N5496 Spring for valves (outer): Length under test force ... 45.47 mm (1.790 in.)Test force ... 185.0 18.0 N (41.6 4 lb.)Use again minimum load at length under test force ... 166 N (37.3 lb.)Length of spring at valve open position ... 30.23 mm (1.190 in.)Use again minimum load at valve open position ... 600 N (135 lb.)Free length after test ... 51.77 mm (2.038 in.)Outside diameter ... 39.62 mm (1.560 in.)Spring must not be bent more than ... 1.80 mm (.071 in.)(1) 9N5495 Spring for valves (inner): Length under test force ... 42.47 mm (1.672 in.)Test force ... 91.2 9.0 N (20.5 2 lb.)Use again minimum load at length under test force ... 81.9 N (18.4 lb.)Length of spring at valve open position ... 27.23 mm (1.072 in.)Use again minimum load at valve open position ... 295 N (66.3 lb.)Free length after test ... 48.77 mm (1.920 in.)Outside diameter ... 26.67 mm (1.050 in.)Spring must not be bent more than ... 1.70 mm (.067 in.) (1) 1W4259 Spring for valves (single spring): Length under test force ... 45.77 mm (1.802 in.)Test force ... 216 22 N (48 5 lb.)Use again minimum load at length under test force ... 194 N (44 lb.)Length of spring at valve open position ... 33.1 mm (1.30 in.)Use again minimum load at valve open position ... 735 N (163 lb)Free length after test ... 50.7 mm (1.996 in.)Outside diameter ... 39.6 mm (1.559 in.)Spring must not be bent more than ... 1.8 mm (.070 in.)(2) Distance from the end of the valve to the valve spring spacer seat ... 52.40 0.38 mm (2.063 .015 in.)(3) Diameter of valve stem: 7C362 and 9L7682 Intake Valve ... 9.462 0.013 mm (.3725 .0005 in.)Use again minimum diameter of the valve stem ... 9.42 mm (.371 in.)9L7683 and 9N5125 Exhaust Valve (tapered stem):Head end of valve stem ... 9.411 0.013 mm (.3705 .0005 in.)Use again minimum diameter of the head end of valve stem ... 9.37 mm (.369 in.)Lock end of valve stem ... 9.436 0.013 mm (.3715 .0005 in.)Use again minimum diameter of the lock end of valve stem ... 9.408 mm (.3704 in.)Bore in the valve guides (intake and exhaust) ... 9.512 0.013 mm (.3745 .0005 in.)Maximum permissible bore in the valve guides (worn): Measure 19.0 mm (.75 in.) deep in valve guide bore from both ends of the valve guide ... 9.550 mm (.3760 in.)(4) Angle of valve face: Intake valve ... 30° 15'Exhaust valve ... 45° 15'(5) Diameter of valve head (intake valve) ... 53.19 0.13 mm (2.094 .005 in.) Diameter of valve head (exhaust valve) ... 45.82 0.13 mm (1.804 .005 in.)(6) Thickness