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SMG Help

Discuss problems you have had or are having with your Z4
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markplant
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Post by markplant » Wed May 24, 2017 10:12 am

Good find mac, let's hope if the op can get this it sorts the issues,
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Post by McDade » Wed May 24, 2017 11:13 am

Thanks guys,

I was very despondent yesterday, you guys have perked my spirits! Il keep you posted

Ive messaged the guy on eBay and started putting the feelers out

Cheers
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mac27040
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Post by mac27040 » Wed May 24, 2017 11:29 am

these also offer a repair on M3 pumps so might repair yours worth a call.

https://shop.bba-reman.com/product-category/make/bmw/
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MACK
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Post by MACK » Wed May 24, 2017 12:15 pm

mac27040 wrote: Wed May 24, 2017 11:29 am these also offer a repair on M3 pumps so might repair yours worth a call.

https://shop.bba-reman.com/product-category/make/bmw/
you could also try ECU Testing and see if they can help. But before spending big get an indie or better still bmw specialist to properly look at the faults codes
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Post by Behr » Wed May 24, 2017 11:30 pm

I can recommend Auto Trans Gloucester. I am sure he does SMG work from when he gave me a tour of his facility a few years ago. They do everything in house and it's like an operating theatre. Main dealers send him cars! He took my 1971 BMW 3HP12 box and completely rebuilt it with new old stock parts.

Worth a call maybe.
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Post by Rusky » Thu May 25, 2017 9:02 pm

Just read this :o :o Hope you manage to sort this minus the 3 grand price tag. :thumbsup:
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Post by McDade » Tue Jun 12, 2018 5:14 pm

Hello everyone, long time no speak.

As my Z has been off the road now for over a year, I've not spent a huge amount of time here.

I do have some potentially good news for me, but maybe for others experiencing this kind of issue.

As it transpires, the SMG hydraulic unit (BMW PN: 23427507163) is made up of a number of components, including the motor that is at fault (BMW PN: 23427571297). Apparently BMW do not make the individual motor and will only sell in a bundle, hense the £3000 bill.

http://www.realoem.com/bmw/enUS/showpar ... 3427571297

I've since been in contact with a Germany company (www.smgsociety.com) who sell the motor individually OEM for around £200, with a guide DIY replacement.

I will be taking the existing motor out in the next two weeks with a view of testing this. Touch wood this is the faulty part, and there is now some light at the end of the tunnel for my Zed.

Thanks
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Post by bladeowner » Tue Jun 12, 2018 5:26 pm

I took the motor apart last week and rejuvenated it. Might be worth a try to prove it is the motor. See here viewtopic.php?f=2&t=106752
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kis
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Post by kis » Wed Jun 13, 2018 9:27 am

I remember from your post before, what process to gain access? Is it similar to the M3? Driver's side wheel / front control arm sort of area?
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Post by bladeowner » Wed Jun 13, 2018 12:34 pm

No , it's underneath the gearbox. There is a heat shield to remove and then a cover plate. That's the easy bit. The pump is on a a bracket with torx screws that are fiddly to get at. The motors earth cable is also fiddly - I changed it later for a hex bolt. The positive cable unclips from the mount and pulls apart. The pump pulls off the expansion tank that needs a container to catch the fluid. My system had no pressure in it - you can check with INPA. There are 2 screws holding the pump onto the motor. The tabs on the motor can be bent back to take it apart. I couldn't find exactly the same size brushes so I bought bigger and ground down to size. I cleaned the comm in a lathe with fine emery and replaced the brushes and re assembled. The hydraulic parts weren't disassembled and so when I reassembled and topped up the expansion tank it all worked.
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Post by patriot66 » Wed Jun 13, 2018 1:26 pm

bladeowner wrote: Wed Jun 13, 2018 12:34 pm No , it's underneath the gearbox. There is a heat shield to remove and then a cover plate. That's the easy bit. The pump is on a a bracket with torx screws that are fiddly to get at. The motors earth cable is also fiddly - I changed it later for a hex bolt. The positive cable unclips from the mount and pulls apart. The pump pulls off the expansion tank that needs a container to catch the fluid. My system had no pressure in it - you can check with INPA. There are 2 screws holding the pump onto the motor. The tabs on the motor can be bent back to take it apart. I couldn't find exactly the same size brushes so I bought bigger and ground down to size. I cleaned the comm in a lathe with fine emery and replaced the brushes and re assembled. The hydraulic parts weren't disassembled and so when I reassembled and topped up the expansion tank it all worked.

Top work ! I've had a poke around the pump/tank just inspecting/checking for leaks etc last year when I changed the gearbox oil on mine and as you say space is very limited indeed :thumbsup:
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Post by McDade » Thu Jun 14, 2018 10:07 am

bladeowner wrote: Tue Jun 12, 2018 5:26 pm I took the motor apart last week and rejuvenated it. Might be worth a try to prove it is the motor. See here viewtopic.php?f=2&t=106752
Thanks very much for that, it gives me much more confidence that someone else here has found the pump and managed to rejuvenated
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Post by McDade » Mon Jun 10, 2019 9:27 am

bladeowner wrote: Wed Jun 13, 2018 12:34 pm No , it's underneath the gearbox. There is a heat shield to remove and then a cover plate. That's the easy bit. The pump is on a a bracket with torx screws that are fiddly to get at. The motors earth cable is also fiddly - I changed it later for a hex bolt. The positive cable unclips from the mount and pulls apart. The pump pulls off the expansion tank that needs a container to catch the fluid. My system had no pressure in it - you can check with INPA. There are 2 screws holding the pump onto the motor. The tabs on the motor can be bent back to take it apart. I couldn't find exactly the same size brushes so I bought bigger and ground down to size. I cleaned the comm in a lathe with fine emery and replaced the brushes and re assembled. The hydraulic parts weren't disassembled and so when I reassembled and topped up the expansion tank it all worked.
Hello, Its taken me near enough a year to get on and take a look at this properly. I managed to remove the motor over the weekend, and its dead. Fingers crossed this is the actual fault, and the replacement will resolve the issue

With regards to filling the fluid reservoir back up, does this need to be done from underneath the car prior to putting the new pump on or is there a nozzle underneath the bonnet somewhere?

Thanks
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2003 BMW Z4 3.0i, Black wi/ Red, SMG - The bit on the side

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Post by bladeowner » Mon Jun 10, 2019 9:44 am

McDade wrote: Mon Jun 10, 2019 9:27 am
bladeowner wrote: Wed Jun 13, 2018 12:34 pm No , it's underneath the gearbox. There is a heat shield to remove and then a cover plate. That's the easy bit. The pump is on a a bracket with torx screws that are fiddly to get at. The motors earth cable is also fiddly - I changed it later for a hex bolt. The positive cable unclips from the mount and pulls apart. The pump pulls off the expansion tank that needs a container to catch the fluid. My system had no pressure in it - you can check with INPA. There are 2 screws holding the pump onto the motor. The tabs on the motor can be bent back to take it apart. I couldn't find exactly the same size brushes so I bought bigger and ground down to size. I cleaned the comm in a lathe with fine emery and replaced the brushes and re assembled. The hydraulic parts weren't disassembled and so when I reassembled and topped up the expansion tank it all worked.
Hello, Its taken me near enough a year to get on and take a look at this properly. I managed to remove the motor over the weekend, and its dead. Fingers crossed this is the actual fault, and the replacement will resolve the issue

With regards to filling the fluid reservoir back up, does this need to be done from underneath the car prior to putting the new pump on or is there a nozzle underneath the bonnet somewhere?

Thanks

Fill the reservoir from underneath the car after the motor/pump is back on. I rigged up a filling device by using a clutch bleeding container and a rubber bulb as the reservoir opening is right up in the tunnel. BTW. I ended up putting a new motor on as the brushes weren't up to the job - but in theory it is a fix.
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Post by bladeowner » Mon Jun 10, 2019 9:51 am

20190610_094702.jpg
20190610_094702.jpg (103.83 KiB) Viewed 955 times
Filler to force fluid up into reservoir
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