S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

SAP motor fix

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Old 08-09-2022, 03:12 PM
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C280 1995
SAP motor fix

Hi friends. Does anybody know, how to dig into the motor of SAP (w221 s550 '06) ? I guess I have a broken contact inside, disassembled almost everything, but stuck on removing the motor out of its plastic case (on the photo)

. Any ideas please?
Old 08-10-2022, 01:48 PM
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no idea what the SAP is.... on the pic above 4 metal tangs at 2 4 8 and 10 o'clock with ends peened over - do you straighten and that plate falls off?

ebay is full of spares...
Old 08-10-2022, 02:07 PM
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Originally Posted by BOTUS
no idea what the SAP is....
Secondary air pump
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Old 08-10-2022, 04:48 PM
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Originally Posted by BOTUS
no idea what the SAP is.... on the pic above 4 metal tangs at 2 4 8 and 10 o'clock with ends peened over - do you straighten and that plate falls off?

ebay is full of spares...
Visually tangs are free, they are not peened over. Also, two screws, removed from the plastic case tells me, that the plate should be removed with motor.
Old 08-11-2022, 02:34 PM
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youtube ? - on BMW ABS esp pump the release requires a hole to be drilled in the correct pace on the motor casing to release an internal bit holding it together

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