Old W140 guy with a new W220 - Page 2 - Mercedes-Benz Forum
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post #11 of 18 (permalink) Old 01-13-2018, 04:06 AM
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Quote:
Originally Posted by MercedesMikeNAtlanta View Post
I pressurized the system again, but nothing happened. Now the pump is making a strange sound. That's why I'm going to rebuild the pump and try again.

Converting to regular shocks/struts is my last resort. I'd like to keep the car original.
Rebuilding the pump is properly difficult, and not that cheap either. One of the best options IMHO is to buy a reconditioned tandem pump from Rock Auto. I always encourage people to keep their ABC going. It's not an easy system to look after, but it's cheaper than a conversion, and you get the advantage of active suspension!

I second the suggestion to get SDS. What people usually get is a Chinese clone; the real ones are very expensive. Installing on the Dell laptop is a faff. If you can find someone who's done the work and is selling a little-used system, that would be a good option.

I think it's also worth getting WIS and EPC on a DVD from ebay or amazon so have cheap, quick and easy access to all the documentation on your PC.

Nick
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post #12 of 18 (permalink) Old 01-13-2018, 04:20 AM
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Hi,

/\ /\ /\ +1 to all of that

I have rebuilt lots of different pumps............

To elaborate on what Nick says, the problem is that the "Hard Parts" Seize and you cannot buy spares off the shelf, yeah, seals etc are readily available from a Hydraulics Supplier, but that isn't the problem, the re conditioners actually strip loads of used Pumps and use the Metal Hard Parts to make up a good unit.

They may get commonly busted up parts manufactured, they also will Machine damaged Castings and fit oversized newly manufactured parts, which they buy in batches..............
Not something the average DIY Guy has access to

If you do manage to find someone who supplies Parts, please let me know, I have 3 u/s Pump Core Units here.
Assuming it was profitable, I would rebuild them and put them into stock, for the next Vehicle with a broken pump

Re the SDS, that's exactly how I bought my first Kit, an owner had sold his MB and had no further use for it, I bought it plug and play

Cheers Dave
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post #13 of 18 (permalink) Old 01-13-2018, 07:57 AM
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"...I bought it plug and play"

It's really too bad that you can't buy the experience in using it at the same time...
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post #14 of 18 (permalink) Old 01-15-2018, 02:05 PM Thread Starter
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Thanks for the help. The parts to rebuild the pump should arrive on Wednesday. I'm trying to get it back in the car by the weekend. I'll keep everyone posted on the progress and if I need to get a "professionaly" rebuilt tandum pump.
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post #15 of 18 (permalink) Old 01-15-2018, 02:51 PM
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Originally Posted by MercedesMikeNAtlanta View Post
Thanks for the help. The parts to rebuild the pump should arrive on Wednesday. I'm trying to get it back in the car by the weekend. I'll keep everyone posted on the progress and if I need to get a "professionaly" rebuilt tandum pump.
.................and snap a few pictures along the way to share!

Thanks and good luck!

Bob
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post #16 of 18 (permalink) Old 01-16-2018, 09:08 AM
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Quote:
Originally Posted by MercedesMikeNAtlanta View Post
Thanks for the help. The parts to rebuild the pump should arrive on Wednesday. I'm trying to get it back in the car by the weekend. I'll keep everyone posted on the progress and if I need to get a "professionaly" rebuilt tandum pump.
Hi,

Hmmmm, I'm interested to see how this pans out, there's an awful lot of bits inside these pumps that get melted when they run dry, pic below, sorry about the quality, it's the only one I've got atm

Where did you get the rebuild kit, any chance of a pic of what parts it contains please ??

Cheers Dave
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post #17 of 18 (permalink) Old 01-16-2018, 10:24 AM
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I thought about a rebuild, too. Turns out my "professionally reman'd" tandem pump has a small leak, and given the labour required to replace that pump, I'd like to do it only once. My guess is that whoever did the rebuild probably put good metal parts in, but they didn't do the seals right. The kit with the seals is somewhere around US $90.

The major issue I face with this is that I don't have the tool to pull off the pulley-holder wheel from the shaft. It looks like it's a very tight press-fit. I tried the one I got from the local auto parts store, and that's just not strong enough. If I can get that pulley wheel off, then I think replacing the seals on this pump is doable.

Anybody got a suggestion for how to get that wheel off, and then back on, without damaging things?

Last edited by cowboyt; 01-16-2018 at 10:38 AM.
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post #18 of 18 (permalink) Old 01-16-2018, 10:46 AM
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I haven't been able to get the pulley off of a standard (single, non-ABC) pump off...
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