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Faults, Fixes and DIY Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix!


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Old Wed, Sep-03-2008, 10:22:57 PM   #1
mr.andersen
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Default Smg Pump Replacement Diy Feeler

Did my own R&R SMG Pump. just trying to see if there is any interest in a DIY. I'd hate to waste the my time on it, if no one cares.
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Old Tue, Sep-09-2008, 09:37:38 PM   #2
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i've got smg, i care.. post it up. when did your pump go out?
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Old Tue, Sep-09-2008, 09:41:58 PM   #3
mr.andersen
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pump went out at 70K
I am working on a DIY now, because many people have been asking for it. In short, the biggest factor in the cost will be where you source your replacement PUMP. brandnew new one at the stealer will run you $2000. There is a website GetBmwparts.com (by tischer? sp) you can source the part from them for about 1500. A used pump, if you are patient will cost around 500 bucks. additionally, one mechanic i know mentioned to to me that some companies are actually able to refurb your existing pump for less money, allthough i remain sceptical. you will also need a computer tool to bleed your transmission. i used Autoenginuity.
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Old Tue, Sep-09-2008, 09:50:57 PM   #4
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y do u need a computer tool to bleed the pump cant it be done with out one
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Old Tue, Sep-09-2008, 09:58:48 PM   #5
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Quote:
Originally Posted by Nadee///M3 View Post
"bleed your transmission."
what doe you mean by this?
And smg transmission is a basic six speed transmission where the changing of gears and clutch operation is done via an SMP pump, which inturn is controlled by a computer and a bunch of sensor. there is a diagram of it somewhere on the internet. basically, when the pump fails, it needs to be replaced.
in a nutshell:
1) depressurise the pump
2) remove intake manifold
3) Remove hydrauilc lines from the smg pump (there are 4 of them)
4) put everything back together
5) bleed the air out of the system.
Basically when you replace the pump, you introduce air into a hydraulic system that is kept under 1200psi(i think) under normal operating conditions. and air in a hydraulic system make the whole thing, well..., not work. therefore, the system needs to be bled. that is accomplished by enaging transmission gears one at a time using this autoenginuity tool i purchased. ($400). Thanks to rallyguy, who is a member of this forum the replacement pump only cost me 500 dollars. total cost of repairs was: 1000 with all the little parts and fluids; $600 if i decide to sell autoenginuity tool on ebay. dealer price: $3500 bucks. my choice was clear.
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Old Tue, Sep-09-2008, 10:04:17 PM   #6
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Quote:
Originally Posted by mr.andersen View Post
And smg transmission is a basic six speed transmission where the changing of gears and clutch operation is done via an SMP pump, which inturn is controlled by a computer and a bunch of sensor. there is a diagram of it somewhere on the internet. basically, when the pump fails, it needs to be replaced.
in a nutshell:
1) depressurise the pump
2) remove intake manifold
3) Remove hydrauilc lines from the smg pump (there are 4 of them)
4) put everything back together
5) bleed the air out of the system.
Basically when you replace the pump, you introduce air into a hydraulic system that is kept under 1200psi(i think) under normal operating conditions. and air in a hydraulic system make the whole thing, well..., not work. therefore, the system needs to be bled. that is accomplished by enaging transmission gears one at a time using this autoenginuity tool i purchased. ($400). Thanks to rallyguy, who is a member of this forum the replacement pump only cost me 500 dollars. total cost of repairs was: 1000 with all the little parts and fluids; $600 if i decide to sell autoenginuity tool on ebay. dealer price: $3500 bucks. my choice was clear.

owe ok thanx post that diy in case i need it
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Old Tue, Sep-09-2008, 10:47:01 PM   #7
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Quote:
Originally Posted by mr.andersen View Post
And smg transmission is a basic six speed transmission where the changing of gears and clutch operation is done via an SMP pump, which inturn is controlled by a computer and a bunch of sensor. there is a diagram of it somewhere on the internet. basically, when the pump fails, it needs to be replaced.
in a nutshell:
1) depressurise the pump
2) remove intake manifold
3) Remove hydrauilc lines from the smg pump (there are 4 of them)
4) put everything back together
5) bleed the air out of the system.
Basically when you replace the pump, you introduce air into a hydraulic system that is kept under 1200psi(i think) under normal operating conditions. and air in a hydraulic system make the whole thing, well..., not work. therefore, the system needs to be bled. that is accomplished by enaging transmission gears one at a time using this autoenginuity tool i purchased. ($400). Thanks to rallyguy, who is a member of this forum the replacement pump only cost me 500 dollars. total cost of repairs was: 1000 with all the little parts and fluids; $600 if i decide to sell autoenginuity tool on ebay. dealer price: $3500 bucks. my choice was clear.
nice.. can't wait to see your diy man.
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Old Mon, Sep-15-2008, 11:16:05 PM   #8
ISPEEDM3
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subscribed to the DIY... just in case!!
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Old Tue, Sep-16-2008, 07:01:23 PM   #9
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i wonder how hard is it to rebuild the pump. can't be that complicated?? someone should take one apart and see what's inside...
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Old Tue, Sep-16-2008, 07:05:04 PM   #10
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I know this will differ depending on drivers style of driving but at what mileage do these pumps go out on typically well maintained street driven cars?
Do the SMG pumps last over 100k?
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Discussing Smg Pump Replacement Diy Feeler in the Faults, Fixes and DIY Forum - Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)