Common Failures of BYD 1266066500 Main Bearing for Song PLUS DM-i/DENZA D9 DM-i/DENZA D9 PHEV/DENZA D9 Hybrid
- Abnormal Wear: The main bearing (OE: 1266066500) in Song PLUS DM - i and DENZA D9 models often shows abnormal wear, which can lead to increased engine noise.
- Oil Leakage: A common issue in DENZA D9 DM - i, PHEV and Hybrid versions, the main bearing may experience oil leakage, affecting lubrication.
- Bearing Damage: In some cases, the main bearing 1266066500 can get damaged, causing poor engine performance.
Maintenance Tips of BYD 1266066500 Main Bearing for Song PLUS DM-i/DENZA D9 DM-i/DENZA D9 PHEV/DENZA D9 Hybrid
- First, ensure the engine is completely cooled before starting to replace the BYD main bearing (OE# 1266066500) in models like Song PLUS DM - i and DENZA D9 series. This prevents burns and thermal damage.
- Use precision measuring tools to check the crankshaft journal diameter. A proper fit between the main bearing and the journal is crucial for smooth engine operation.
- Clean the main bearing housing thoroughly. Any debris can cause premature wear of the BYD main bearing.
- Apply a thin layer of high - quality engine oil on the main bearing surfaces during installation. This reduces friction during the initial start - up.
- Double - check the orientation of the main bearing. Incorrect installation can lead to engine failure.
- Refer to the vehicle's service manual for the correct torque specifications when tightening the main bearing caps.
Warning: Do not overtighten the main bearing caps as it can cause deformation of the BYD main bearing (OE# 1266066500) and lead to serious engine damage.