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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Jul-04-2016, 04:39:59 PM   #41
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Default Re: SMG Pump Motor Replacement On Car - DIY

GREAT DIY!! Saving this for future use.
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Old Wed, Jul-06-2016, 09:57:11 PM   #42
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Default Re: SMG Pump Motor Replacement On Car - DIY

Did you just suck out the old oil with a turkey baster? I might try this before doing the motor...

I did a track day in the heat on Saturday and it only dropped out of gear once and it was my fault for ignoring the light...for the rest of the day I didn't get any more lights or drops. This was very interesting because the outside air temp and my oil temp went up but the smg was still happy...I think this can be attributed to increased airflow (moving around the track faster as the day went on and my lap times went down).
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Old Wed, Jul-06-2016, 11:07:04 PM   #43
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Default Re: SMG Pump Motor Replacement On Car - DIY

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Originally Posted by M3RING View Post
Did you just suck out the old oil with a turkey baster? I might try this before doing the motor...

I did a track day in the heat on Saturday and it only dropped out of gear once and it was my fault for ignoring the light...for the rest of the day I didn't get any more lights or drops. This was very interesting because the outside air temp and my oil temp went up but the smg was still happy...I think this can be attributed to increased airflow (moving around the track faster as the day went on and my lap times went down).
I used a Mixmizer (pictured below) but a turkey baster would probably do the same thing. I had an empty liter of oil from my last oil change and shot the old SMG oil into it so I could put roughly the same amount back in from the new bottle.



Ideally, you'd want to circulate and bleed the system, but this has worked pretty good for me so far. Today was showing 105 on my instrument cluster and I got stuck behind an accident for a bit. After I got past the accident, I ran through a few gears and let it pull close to red line. No cog light or any issues for the rest of the way home. Previously, I would try to keep the revs as low as possible as a few pulls would almost always trigger the light. Because of this, it's almost like a brand new car to me again. It's fun to drive when I'm not constantly worrying or waiting on the light to show up on hot days.
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Old Sun, Jul-10-2016, 03:47:18 PM   #44
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Default Re: SMG Pump Motor Replacement On Car - DIY

Anybody know the specifications( torque, rpm, etc) of the oem SMG pump motor?
Johannes could you please disclose some data, since you already sourced a replacement.
Thank you.
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Old Mon, Jul-11-2016, 01:38:43 PM   #45
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Default Re: SMG Pump Motor Replacement On Car - DIY

Thank you for your request. I hope you will understand that we can not publish detailed datas here.

Johannes

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Originally Posted by ///3Mojo View Post
Anybody know the specifications( torque, rpm, etc) of the oem SMG pump motor?
Johannes could you please disclose some data, since you already sourced a replacement.
Thank you.
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Old Fri, Jul-15-2016, 01:51:38 PM   #46
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Default Re: SMG Pump Motor Replacement On Car - DIY

I wanted to give a quick update. I've put almost 1,000 miles on the car and I haven't had a cog light once. Between the motor and the oil, I think this is now considered a solution, at least in my case. The car shifts great and hasn't missed a beat, even with heavy traffic and high heat situations with the AC on the max setting.

Example of what I'm dealing with each day

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Old Fri, Jul-15-2016, 03:16:12 PM   #47
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Default Re: SMG Pump Motor Replacement On Car - DIY

Nice one Steve. I'll be ordering my rebuild kit next week.
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Old Fri, Jul-15-2016, 04:27:02 PM   #48
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Default Re: SMG Pump Motor Replacement On Car - DIY

I think I will need this. After being in stopped traffic downtown for 3 hours due to Honda Indy road closures, my cog light came on. Never lost gear though.
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Old Fri, Jul-15-2016, 09:51:00 PM   #49
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Default Re: SMG Pump Motor Replacement On Car - DIY

Noted you had the COG light when you just replaced the pump. So is it safe to assume just changing the fluid will prevent this issue? Will mixing the fluid with pentosin have any ill effects.
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Old Fri, Jul-15-2016, 10:30:05 PM   #50
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Default Re: SMG Pump Motor Replacement On Car - DIY

steve,

before changing out the motor, did you ever perform the accumulator pressure test? just trying to understand how you were able to isolate the motor as the issue and not the accumulator .

thanks..

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Originally Posted by Steve M3 View Post
Thanks everyone!

To answer a few questions. Yes, I ordered the repair kit from BE. It came with everything needed except for the tool to push the pins out. I ordered that separately and don't see how you could really do the job cleanly without it. It's a simple tool, but the last thing you'd want to do is to break the SMG wiring harness connector as I doubt you could get a replacement part.

As far as performance, the car has been working great over the last two days and 100+ miles I've put on it. The real test will be my commute to/from work this week as it will be in the mid to high 90s. With all of the concrete and other cars around, I'm sure the ambient temp reported by my dash will be 100+. Typically, I've had problems any time the car showed 90+ degrees in the past.

As far as the power output of the motor, I'm not 100% sure. It is slightly smaller than the OEM motor but felt heavier in my hands. The smaller size made it much easier to put everything back together, which was a plus. I'll send a link to this thread to BE and see if they can clarify specific output of the motor compared with the OE unit.
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Discussing SMG Pump Motor Replacement On Car - DIY in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)