The valve disc of the secondary exhaust valve of the air pre-cooler compressor broke off and fell into the piston cylinder, causing damage to the inner wall of the cylinder
Thread Content
May I ask, 1. What causes the valve disc to crack?； 2. How to repair the piston cylinder body?
This phenomenon is a normal form of wear, caused by hair strand fatigue. To prevent this, it needs to be replaced regularly. As for the issue of cylinder scoring, it is recommended to use a rounded emery stone to smooth out the damaged scuffed areas, so that they no longer scratch the piston rings and the component can be used again.
The area where the strain occurred is too deep! Can’t hold your breath anymore, right?
For better repair, it is recommended to take it to Hangqi; cold spraying technology can be used to fix the defects, and after further precision machining to the installation dimensions, it can be used safely for a long time
Honing to no more than 0.2 mm; if exceeded, first use a boring machine to remove chips and then perform honing, while using non-standard supports and sealing rings
Won’t the leaking occur if the torn area isn’t repaired?
It’s just that the efficiency decreases accordingly; it’s not a big deal at all. In fact, the gap at the seam of the piston ring is much larger than this. You can try fixing it and see how it works. If it seems annoying from a psychological perspective, and you don’t mind spending money, it’s best to purchase cylinder liners directly from the manufacturer and install them – that way there’s no need to worry about it :)