Tommyboy928

when change your ABC pump , and it does not last long, the reason is that mecanic mix up bolt nr. 400 and bolt nr. 410 on this drawing, i read many post that people have blown pumps after short time changed pumps. IF MIX up this 2 bolts that look simular for anybody that take them off, and fit them back in wrong place, the pump will last short time. If ask Mercedes mecanic, they dont even know this is the issue why some pump last short time.

techman

I have seen pumps fail quickly if they are not bleed after installation. When there not they run dry and burn out.
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Tommyboy928

thats another case, but if mix up this 2 bolts up, and is easy do it. BOLT nr. 400 in picture, is bigger diameter inside, and it connected direct on the pump.
Pressure for pump is to high. i bet not many know this is a issue.

here is good write up for change pump.

https://www.benzworld.org/threads/di...quote=13748897

Jules 75ZT

That link doesn't seem to be a write up but just the symptoms he had 🤔