SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: SL320 secondary air pump

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Old 11-29-2017, 08:20 AM
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1995 sl320
SL320 secondary air pump

I haven't found anything on the subject, perhaps I am using the wrong terminology. However, the other day, I heard a loud squeal followed by the battery light coming on. Being close to home, I just continued but discovered that the engine belt had come apart and was laid out on the top of the engine cover. The "smog pump", or air pump, was seized tighter than a drum. Anybody have experience with this and, more importantly, can the pump be repaired? Just looking at options before buying a new, or overhauled, unit. Thanks in advance.
Old 11-29-2017, 02:48 PM
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'09 S600, (2) R129 300SLs, '03 SL500, '03 SL55
Originally Posted by helimd
...more importantly, can the pump be repaired?
Doubtless the pump can be repaired, but locating the needed resources could be a daunting task. Surely it is cheaper and preferable to simply purchase a replacement used pump from eBay.
Old 03-02-2018, 06:38 AM
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R129 SL500 '1996
Do you have a part number helimd? Might be able to help you.

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