General 01.8 352/352 A Valve tappet bores Normal Repair stage III mm mm 28,033 28,783 28,000 28,750 Cylinder head Valve sea! Exhaust ~-------- a ------~~ l--- a Valve seat rings must be renewed il the machining limit is exceeded when remachining the valve seat.
UKD 30 402 21 42 - 04 1.2/3 Repair stage 1 mm 28,233 28,200 Repair stage 11 mm 28,533 28,500 Overall height of cylinder head mm 92,10 91,90 1,00 0,05 0,015 0,10 Permissible material allowance mm lengthwise Permissible roughness of mating surface crosswise Permissible parallel misalignment lengthwise of upper to lower mating surface mm mm mm Pressure test in water bar 2.5 1.8 to 2.5 Nozzle projection relative to lower edge of cylinder head mm Peak-to· valley height of lower mating surface mm 0,008 up to 0,016 Valve seat ring diameter a for new rings Inlet mm 42 ± 0,01 Exhaust mm 34+ 0,01 Width b Inlet mm 1,6 up to 2,0 Exhaust mm 2,0 up to 2,5 Reference dimension C Inlet mm 2,8 + 0,2 Exhaust mm 2,6 + 0,2 Permissible runout 01 valve seat mm 0,03 Distance between cylinder head mating surface and valve head Valve seat angle Inlet mm 0,7 + 0,5 Exhaust mm 0,7 + 0,5 Inlet and exhaust Inside Inlet Exhaus!
· 45.- 10' - 20' Correction cut · 60· 75· · Outside Inlet and exhaust · 30·