Final Drive - Another Thread - K-Bikes.com - Excellence in Motion
 
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post #1 of 8 (permalink) Old Aug 8th, 2009, 7:54 am Thread Starter
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Final Drive - Another Thread

Having purchased my 07 K1200GT with 4000 miles and only 12 months old the previous owner supplied me with all the paperwork from his 600 mile service, I was happy to see a oil/filter change, final drive oil changed and recall warranty work preformed on the oil tank vent and the center stand was checked also.
Now my mileage is at 11700 and just to be on the safe side I have decided to perform another final drive oil change, rather than to drop the final drive I choose to removed the drain plug (the magnet was packed with metal partials) & insert a 1/4 plastic tube to the bottom of the drive and began to pump the oil out. It's not working, something is wrong, removed the tube and re-inserted it and pumped again, total amount of very dirty black oil removed was about 1 oz. To make a long story short, the final drive was hastily drained at one time (I am suspecting the 600 mile service) and not quite totally drained and then re-assembled without any oil being added.
There was and is no sign of play or leaks, I filled with 200 cc of 75/90 and will run for about 1000 miles and then do it again, I hope that the oil that was removed will be a sufficient amount to send to Blackstone Laboratories for an analysis (may take several weeks, I will keep you posted).
I will not name the dealer involved (bike was purchased out of state) for obvious reasons, and BMW wonders why the rear ends are failing!
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post #2 of 8 (permalink) Old Aug 8th, 2009, 9:28 am
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Quote:
Originally Posted by Ropal
Having purchased my 07 K1200GT with 4000 miles and only 12 months old the previous owner supplied me with all the paperwork from his 600 mile service, I was happy to see a oil/filter change, final drive oil changed and recall warranty work preformed on the oil tank vent and the center stand was checked also.
Now my mileage is at 11700 and just to be on the safe side I have decided to perform another final drive oil change, rather than to drop the final drive I choose to removed the drain plug (the magnet was packed with metal partials) & insert a 1/4 plastic tube to the bottom of the drive and began to pump the oil out. It's not working, something is wrong, removed the tube and re-inserted it and pumped again, total amount of very dirty black oil removed was about 1 oz. To make a long story short, the final drive was hastily drained at one time (I am suspecting the 600 mile service) and not quite totally drained and then re-assembled without any oil being added.
There was and is no sign of play or leaks, I filled with 200 cc of 75/90 and will run for about 1000 miles and then do it again, I hope that the oil that was removed will be a sufficient amount to send to Blackstone Laboratories for an analysis (may take several weeks, I will keep you posted).
I will not name the dealer involved (bike was purchased out of state) for obvious reasons, and BMW wonders why the rear ends are failing!
How can you be sure you got it all out? Especially if you didn't follow the recommended drainage procedure. Although 1 oz vs 200cc is a big difference.
Why not give the name of the dealer? Are you going back to them for possible service or warranty claim?

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post #3 of 8 (permalink) Old Aug 8th, 2009, 9:33 am
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I agree with JCW, you should name the dealer. It might help prevent this happening to someone else.

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post #4 of 8 (permalink) Old Aug 8th, 2009, 11:01 am
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I'd try to document this as well as you can, and definitely bring it to the dealer's attention. They may try to claim it leaked out, but if so that would be kind of ridiculous because if an entire normal fill leaked out over that period of miles it would make a very obvious mess.
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post #5 of 8 (permalink) Old Aug 8th, 2009, 11:49 am
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I agree with JCW - are you sure you got all the old oil out? The final drive is packed very tightly inside, so it's very difficult to get even a small hose down to the very bottom. I'm concerned that you have now over filled it and you might be putting undue stress on the seals. BMW has recommended lowering the final drive fill from 230 mL to 180 mL, so I'd want to be damn sure that the fluid level is correct..

I'd say drop the FD and drain it properly rather than just assuming it was running dry for 11,100 miles. In this case you can't really blame the dealer, because you just don't have enough info here.

But I'm more concerned with your statement that "the drain plug magnet was packed with metal partials." Some fine grey paste is normal there, but if you saw actual metal pieces then that's very bad.

Unfortunately, because you didn't drop the final drive and drain it properly, you can't really say for sure what happened before you got the bike. Plus it's been running fine for the last 8,000 miles at least . . .

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post #6 of 8 (permalink) Old Aug 8th, 2009, 12:12 pm
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I have not done this yet, had the dealer do it at 600 miles, but I remember reading that you need to rotate the rear wheel while placing the tubing into the final drive in order to get it past the gears, and to the bottom of the drive. Anyone remember reading something like that? By the way some dealers themselves change the oil using an electric vacum pump, and don't drop the final.

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post #7 of 8 (permalink) Old Aug 8th, 2009, 2:23 pm
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I had a small hose on a syringe but couldn't get it snaked down to the bottom without moving the gears which I thought may cut the hose and then what? I don't know if they changed the size of the housing when they added the drain plug (making it possibly easier to snake down?) to those drives without one.

Still, I'd be concerned with whatever metallic critter lies in the bottom of the drive isn't going to come out using the drain hose method. If a dealer were doing this, I'd be a bit concerned.


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post #8 of 8 (permalink) Old Aug 8th, 2009, 3:31 pm
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Quote:
Originally Posted by Meese
I agree with JCW - are you sure you got all the old oil out?
And I agree with JCW and Meese. I mis-read your original post and thought that you removed the drain plug and actually verified that there was no oil in there. If all you did was try a drain tube then I would have very little confidence that you got much of the oil out, or that it's even possible to do it that way. In which case you may be running very overfilled at this point.
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