mxu 250 300 Workshop-manual : Page 123

Microfiches
Image preview

Page 121

Image preview

Page 122

Image preview

Page 124

Image preview

Page 125

1 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 325 330 335 340 345 350 352
          7. CYLINDER HEAD/VALVES                                                        MXU 300/250

                                                 Rocker Arms                   Stop Plate
 CAMSHAFT HOLDER DISASSEMBLY
 Take out the valve rocker arm shafts.
 Remove the valve rocker arms, arm shafts
 and stop plate.




                                                                  Rocker Arm Shafts




 CAMSHAFT HOLDER INSPECTION                        Camshaft Holder
 Inspect the camshaft holder for wear or
 damage.

 Inspect the rocker arm shaft for blue
 discoloration or grooves.
 If any defects are found, replace the rocker
 arm shaft with a new one, then inspect
 lubrication system.


                                                                  Rocker Arm Shafts




                                                                             Rocker Arm Bore
 Inspect the rocker arm bore, cam lobe
 contact surface and adjuster surface for
 wear/pitting/scratches/blue discoloration.
 If any defects are found, replace the rocker
 arm shaft with a new one, then inspect
 lubrication system.




                                                Contact Surface       Adjuster Surface



                                                                                            7-6