dinkstreet 300 i abs 1 Manuale-dofficina : Pagina 69

          6. CYLINDER HEAD/VALVES                                                     Downtown 300i ABS


 SERVICE INFORMATION
 GENERAL INSTRUCTIONS
 · The cylinder head can be serviced with the engine installed in the frame. Coolant in the radiator
   and water hoses must be drained.
 · When assembling, apply molybdenum disulfide grease or engine oil to the valve guide movable
   parts and valve arm sliding surfaces for initial lubrication.
 · The valve rocker arms are lubricated by engine oil through the engine oil passages. Clean and
   unclog the oil passages before assembling the cylinder head.
 · After disassembly, clean the removed parts and dry them with compressed air before inspection.
 · After removal, mark and arrange the removed parts in order. When assembling, install them in
   the reverse order of removal.

 SPECIFICATIONS                                  Standard (mm)
                Item
 Valve clearance (cold)      IN                        0.10
                             EX                        0.10
 Cylinder head compression pressure                 16 kg/cm
 Camshaft cam height          IN                     34.2987
                              EX                     34.1721
 Valve rocker arm I.D.        IN                 10.0010.015
                              EX                 10.0010.015
 Valve rocker arm shaft       IN                 9.9729.987
 O.D.                         EX                  9.9729.987
 Valve seat width             IN                       1.2
                              EX                       1.2
 Valve stem O.D.              IN                  4.9904.975
                              EX                  4.9704.955
 Valve guide I.D.             IN                   5.005.012
                              EX                   5.005.012
 Valve stem-to-guide          IN                 0.0100.037
 clearance                    EX                 0.0300.057

 TORQUE VALUES




 SPECIAL TOOL

 Valve spring compressor            E063




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