Rust developing on a/c compressor pulley
 

Working in dealers and repair shops i always see subarus with this issue..now its building up a rusty dust on my a/c pulley..What is the cause of this?

Cheap metal and coating.

Maybe, since the A/C clutch is sometimes magnetized, it’s attracting metal particles from the surrounding air ….. :iono:


humfrz

Pics? The clutch is metal on metal, so it WILL rust if you don't use the A/C (much like brakes that are sitting)

Why is this an issue??

It was a slow day in Morrisville, PA ...... ??


humfrz

LMAO No kidding! :lol:

"Rust is another name for iron oxide, which occurs when iron or an alloy that contains iron, like steel, is exposed to oxygen and moisture for a long period of time. Over time, the oxygen combines with the metal at an atomic level, forming a new compound called an oxide and weakening the bonds of the metal itself."

There now we know what causes rust.

I was bored and wondering. Makes sense i dont ever use my ac

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my two sub pulleys start bleed out oil and make bearing sound so i replace the bearing