Genuine Mazda 626 Rod Bearing

Mazda 626 Rod Bearing Parts and Q&A

• Bearing Set
  F801-23-105C
  Q: What essential steps and considerations should be taken during an engine overhaul for Rod Bearing replacement and inspection on Mazda 626?

  A:

  When performing an engine overhaul, it is necessary to change the main and connecting rod bearings and keep the former bearings to examine them since the latter bearings might tell about the state of the engine. Failure can be caused by several factors such as a lack of lubrication, dirt, engine overload and corrosion among others which should be corrected before reassembling the engine to prevent a repeat of the same. In inspecting the bearings, they must be taken out of their place and laid on a clean surface to afford of matching any trouble with the crankshaft journal. The contaminants may be entered into the engine by assembly errors, filters, or breathers and may contain metal chips and abrasives by machining or improper cleaning. These foreign particles may be embedded in the bearing material and larger ones may result in scoring or gouging. Maintenance of all parts through extensive cleaning and regular replacement of oil and filter is essential in order to avoid such failures. Excessive heat, overloading, leakage of oil, and blocked passages may result in lubrication problems, wiping off of bearing material and overheating. Driving behavior is also big determinant of bearing longevity; the full throttle driving at low speeds may result in high load to squeeze oil and short trips may result in corrosion because of lack of heat. There is also inappropriate fitting of bearings which can lead to oil deprivation or elevated locations that lead to failure.