CUTTING EDGE 8D2787 - Caterpillar

1 Bore-valve guide ... .3751 .0007 in.9,527 0,018 mm2 Length-guide ... 2.872 in.72,95 mm3 Bore depth in head for insert ... .474 .001 in.12,039 0,025 mm4 Diameter-bore in head for insert (inlet) ... 1.8090 .0005 in.46,049 0,0127 mm Diameter-insert (inlet) ... 1.8120 .0005 in.46,025 0,0127 mmDiameter-bore in head for insert (exhaust) ... 1.6840 .0005 in.42,774 0,0127 mmDiameter-insert (exhaust) ... 1.6870 .0005 in.42,850 0,0127 mm5 Width-valve seat (inlet) ... .060 in.1,52 mm Width valve seat (exhaust) ... .074 in.1,88 mm6 Angle to grind insert face to reduce seat maximum diameter ... 15°15°7 Closed inlet valve minimum projection ... .075 in.1,90 mm Closed inlet valve maximum projection ... .133 in.3,38 mmClosed exhaust valve minimum projection ... .075 in.1,90 mmClosed exhaust valve maximum projection ... .133 in.3,38 mm8 Angle-valve seat ... 45°45°9 Diameter-valve seat: Inlet seat minimum permissible ... 1.714 in.43,54 mmInlet seat maximum permissible ... 1.7456 in.44,34 mmExhaust seat minimum permissible ... 1.589 in.40,36 mmExhaust seat maximum permissible ... 1.6210 in.40,40 mm