IDLER GP-TRACK 7T6996 - Caterpillar

Guideline For Reusable Parts; Valves And Valve Springs, SEBF8002 and SEBF8034, have the procedure and specifications necessary for checking used valves and valve springs. (1) 9L9190 Spring for valves (outer): Length under test force ... 43.56 mm (1.715 in)Test force ... 155 22 N (35 5 lb)Use again minimum load at length under test force ... 118 N (27 lb)Length of spring at valve open position ... 30.86 mm (1.215 in)Use again minimum load at valve open position ... 660 N (148 lb)Free length after test ... 47.12 mm (1.855 in)Outside diameter ... 36.58 mm (1.440 in)Spring must not be bent more than ... 1.65 mm (.065 in)(1) 9L9172 Spring for valves (inner): Length under test force ... 43.56 mm (1.715 in)Test force ... 74 4 N (17 1 lb)Use again minimum load at length under test force ... 50 N (11 lb)Length of spring at valve open position ... 30.86 mm (1.215 in)Use again minimum load at valve open position ... 310 N (70 lb)Free length after test ... 47.12 mm (1.855 in)Outside diameter ... 25.35 mm (.998 in)Spring must not be bent more than ... 1.65 mm (.065 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: 9L7682 Inlet Valve ... 9.462 0.013 mm (.3725 .0005 in)Use again minimum diameter of the valve stem ... 9.42 mm (.371 in)9L7683 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 (inlet 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: Inlet valve ... 30 1/4 degreesExhaust valve ... 45 1/4 degrees(5) Diameter of valve head (inlet 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 of valve lip: Inlet valve ... 2.31 mm (.091 in)Use again minimum valve lip thickness ... 1.78 mm (.070 in)Exhaust valve ... 1.60 mm (.063 in)Use again minimum valve lip thickness ... 1.27 mm (.050 in)