Scania 9-Series - Valve specifications

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Scania CV AB 1997 01:01-02
Program 96
Exhaust valve
Clearance(coldengine) ...................................0.80 mm
Headangle..............................................44.4°-44.6°
MinimumdimensionAformachinedvalve,page10.............1.7mm
Intake valve seat
Seatangle..............................................20.0°
ContactsurfacewidthA,page11............................2.3-2.8mm
ValveseatringOD.......................................53.066 - 53.079 mm
Position for valve seat ring, diameter .........................53.000 - 53.019 mm
Position for valve seat ring, depth............................11.25 - 11.35 mm
Exhaust valve seat
Seatangle..............................................45.0°
ContactsurfacewidthA,page11............................1.9-2.6mm
ValveseatringOD.......................................49.081 - 49.092 mm
Position for valve seat ring, diameter .........................49.000 - 49.016 mm
Position for valve seat ring, depth............................11.25 - 11.35 mm
Valve guides
Length,intake...........................................68.2 mm
exhaust ..........................................68.2 mm
Height above surface for valve guide:
intake............................................16.7 mm
exhaust ..........................................16.7 mm
Rocker arm mechanism
Rockerarmbushing,ID(pressedinandmachined)..............30.007 - 30.028 mm
Surface quality ..........................................0.8Ra
Oil hole diameter drilled to same diameter as in rocker arm.