Table of contents: Examination ↓ Selection of inserts ↓
Causes of bearing wear
1. Reduction of the metal's tensile strength, jagged scratches
2. Incorrectly planted; bright (polished) stripes
3. Scratched with dirt; dirt has eaten into the bearing surface
4. Lack of oil; the top layer has worn off
5. Excessive wear; the top layer has worn off over the entire surface
6. The bearing is deformed; the top layer has worn off in a circle
Examination
Even though old bearing shells are replaced with new ones during engine overhaul, it is necessary to carefully inspect the old shells. Inspection of the shell can reveal the cause of its wear.
Bearing failure occurs due to lack of lubrication, the presence of dirt and other foreign particles, engine overload and corrosion.
Selection of inserts
To select the correct bearings, use the lubrication gap size, which can be measured using a plastic measuring tape. If you have any problems selecting bearings, contact a specialist.
[The original version of the article is posted on the website: AUDImanual]