That's good to know Dan, maybe I can fix this pump then.
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Max
Charleston SC
On Thu, Mar 12, 2020 at 1:34 PM dan--- via Mercedes
wrote:
> Yeah, that’s one of the “smart” pumps. They can be opened and serviced. No
> electronics to speak of if they like the W140 and W210 versions, but
Yeah, that’s one of the “smart” pumps. They can be opened and serviced. No
electronics to speak of if they like the W140 and W210 versions, but some
contacts that can be adjusted to control state change (pressure/vacuum) and
high/low pressure/vacuum thresholds.
Lots of info on BW on these as I
Looks like this pump was common to all the 124 cars as well as others.
https://www.programainc.com/item_detail.aspx?idproduct=107&idcategory=0&sf=124%20800%2021%2048
I've got the pump from Wilton's sedan, should be able to swap that in and
have an answer.
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Max
Charleston SC
On Thu,
There was an early Hella 126 pump that was quite stupid, but I've only ever
seen one of those. As one might expect, the diaphragm on the snap switch
failed. The later pumps are bidirectional motor/pumps, with electronics. Far
fewer moving parts.
-- Jim
___
Don't know the answer to that, I'm speculating now. I've got some research
to do about which pumps are shared and which are unique.
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Max
Charleston SC
On Thu, Mar 12, 2020 at 11:09 AM dan--- via Mercedes
wrote:
> Are the pumps on the late W124s a separate unit like PSE pumps on la
Are the pumps on the late W124s a separate unit like PSE pumps on later models,
or the “dumb” kind like the “football” found in W126 models?
I ask because the “dumb” pumps don’t have any logic, just a pressure actuated
snap switch that reverses rotation, changing from vacuum to pressure and
vic
> ...the CLS control circuit, which ... is integral to the pump, is the faulty
> component.
Yes, if the signal from the door lock is indeed correct, it is. At this point
diving into the
pump can't hurt. My first suspicion would be bad solder joints, but re-capping
too while
you're there could
Last night I had some time to diagnose the central locking system (CLS) on
the '94 E320 wagon that Floyd helped me "rescue" a couple months ago.
The LF door lock, when turned with the key to lock or unlock, would
physically lock that door, but no activation of the CLS. The RF door, upon
locking,
