E60 noisy front pulley

[GR4]

My previous 520d developed a knocking noise when cold which turned out to be the dual mass front pulley breaking down. Was replaced under warranty and I later heard that this is quite commonplace on the '20d engines.
Fast forward to current car, an LCI 530d, and that too is now getting noisy in around the same area. Out of warranty now and the pulley is quite an expensive part, so does anyone know if the 'short life front pulley' issue also affects the 30d's?

[TheEnd]

I know the bit you mean, I have a feeling it is the crankshaft damper.
It's a heavy metal wheel that is attached through a rubber inner donut and they do tear and get loose.

It seems to be fairly common on diesels, and a bit awkward to swap sometimes as they are bolted on very tightly.

[roofer]

Recently changed one on my old 335d. Failed after 100k. No warning noise though. £300 from ECP, easy to get the pulley off, much faffing getting the rad out first though.

[GR4]

Thanks, that's the one, so looks like the 6 cylinder engines suffer from the same issue. What happens when it fails completely? Does the pulley collapse and throw the belts?

[phumy]

roofer said:

Recently changed one on my old 335d. Failed after 100k. No warning noise though. £300 from ECP, easy to get the pulley off, much faffing getting the rad out first though.

What is the st idea? I cant see too much wrong with it.

[roofer]

GR4 said:

Thanks, that's the one, so looks like the 6 cylinder engines suffer from the same issue. What happens when it fails completely? Does the pulley collapse and throw the belts?

You lose drive to water pump/steering etc.

[roofer]

phumy said:

What is the st idea? I cant see too much wrong with it.

A rubber connection to metal in a high torque engine?Same as a dual mass flywheel, answer to a question nobody asked. Americans have been using harmonic pulleys for years without resorting to this idea, never had one of them fail.

[phumy]

roofer said:

phumy said:

What is the st idea? I cant see too much wrong with it.

A rubber connection to metal in a high torque engine?Same as a dual mass flywheel, answer to a question nobody asked. Americans have been using harmonic pulleys for years without resorting to this idea, never had one of them fail.

Audi have been using it since at least 1981 on their old quattro turbos too.