Genuine Mitsubishi Cordia Rod Bearing

Mitsubishi Cordia Rod Bearing Parts Questions & Experts Answers

• Bearing Set
  MD071298
  Q: What Rod Bearing inspections should be carried out on crankshaft crankpins, and what steps should be taken if scoring is evident on Mitsubishi Cordia?

  A:

  The crankshaft crankpins should be checked for clogged oil holes and scoring; if scoring is found, these crankpins must be machined undersize and the same undersize bearings fitted in all the rods. The manufacturer requires that crankpins and rod bearings with little wear and normal wear patterns be checked for fit with Plastigage. Remove oil from all wear surfaces. Cut the Plastigage inserts to the width of the bearing. Apply the insert to a part of the crankpin that is away from an oil hole. Install and torque the rod cap to specification without turning the crankshaft. Once the connection rod bolts and caps have been removed, read the width of the Plastigage at its widest part and compare this dimension with the included scale to find the actual bearing clearance; if within specification, reuse the bearings. In addition, with the rod assembled and torqued, measure the side clearance between the connecting rod side surface and the crank cheek. Excessive wear indicates the need for rod and cap replacement to restore clearance. Upon replacing bearings, ensure the backs of bearings and the inner surfaces of the rod and cap are dry while the bearings and crankpins are clean engine oil. Bearings should be installed with notches in bearing, rod, and cap aligned so that they do not spin. Notches in rod and cap should be on the same side to avoid misalignment. The rod bolts should be torqued evenly in stages to the specification. When assembling the rods and caps, they must be fitted in the correct numerical sequence. The arrows on the top of the pistons must be pointed towards the crankshaft pulley. The markings on the sides of the rods must be aligned. If in doubt, check that the cap is correctly fitted on the rod. Then check that the two bearing notches are on the same side.