Common Failures of BYD 1017378300 Differential Pinion Seal for Han EV/Tang EV/Atto3 PLUS EV/Yuan PLUS EV/Atto3 PRO EV/Yuan PRO EV/Dolphin EV/Qin PLUS DM-i/Song PLUS EV/Song PLUS DM-i/Song PRO EV/Song PRO DM-i/Seal EV/eT3/D1 EV/KING DM-i/Chazor DM-i/Seal5 DM-i/Destroyer 05 DM-i/DENZA D9 EV/DENZA D9 DM-i/DENZA D9 PHEV/DENZA D9 Hybrid
- Oil Leakage: In many BYD models like Han EV and Atto3 PLUS EV, the Differential Pinion Seal (OE 1017378300) often leaks oil, which can lead to insufficient lubrication.
- Premature Wear: Frequent high - speed driving in models such as Song PLUS EV may cause premature wear of the Differential Pinion Seal, reducing its sealing performance.
Maintenance Tips of BYD 1017378300 Differential Pinion Seal for Han EV/Tang EV/Atto3 PLUS EV/Yuan PLUS EV/Atto3 PRO EV/Yuan PRO EV/Dolphin EV/Qin PLUS DM-i/Song PLUS EV/Song PLUS DM-i/Song PRO EV/Song PRO DM-i/Seal EV/eT3/D1 EV/KING DM-i/Chazor DM-i/Seal5 DM-i/Destroyer 05 DM-i/DENZA D9 EV/DENZA D9 DM-i/DENZA D9 PHEV/DENZA D9 Hybrid
- First, ensure you have the correct BYD Differential Pinion Seal (OE# 1017378300) for your Han EV, Tang EV or other listed models. Check the seal for any visible damage before installation.
- Next, clean the differential pinion area thoroughly to prevent debris from getting trapped. A clean surface ensures a better seal.
- Apply a thin layer of lubricant to the lip of the BYD Differential Pinion Seal. This helps with smooth installation and reduces the risk of damage.
- When installing, use a proper seal installer tool to ensure even pressure. Avoid using sharp objects that could cut the seal.
- After installation, rotate the pinion shaft a few times to check for proper seating of the BYD Differential Pinion Seal. This helps to confirm a good fit.
Warning: Do not over-tighten the Differential Pinion Seal during installation. Over-tightening can cause the seal to deform and lead to leaks.