Genuine Mazda MPV Camshaft

Mazda MPV Camshaft Parts and Q&A

• Camshaft
  G601-12-420
  Q: How should the camshaft and cylinder head bearing surfaces be visually checked for damage, and what steps should be taken if any issues are found on Mazda MPV?

  A:

  Inspect the surfaces of the camshaft and Cylinder Head bearing, pitting, and score marks, galling, and abnormal wear, should be examined visually, and a replacement of the head is required, with the services of an automotive machine shop being consulted. Check camshaft runout A dial indicator is mounted to one of the center journals and is zeroed, the cam shaft is turned slowly and the dial indicator is read, make records of these values and compare them with the recommended runout, changing the cam shaft in case of higher than recommended runout. Determine the height of the camshaft lobes using a micrometer and when any of the lobe heights is found to be lower than the minimum allowed height, change the camshaft. Measure the journal diameter of each journal and take note of it and compare with the standard journal diameter, should the journals come up short of the standard journal diameter, substitute camshaft. Check the contact and sliding surfaces of each hydraulic lash adjuster and score or damaged parts are replaced. Lastly, examine the rocker arms and shafts, with regard to unusual wear, pits, galling, mark of the score, and roughness; but do not make an attempt to repair rocker arms, by grinding the pads; replace defective parts.