Warm vs. Cold Trany Shifting. - BMW Luxury Touring Community
 
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post #1 of 10 Old Oct 10th, 2012, 6:33 pm Thread Starter
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Warm vs. Cold Trany Shifting.

Seems like this might be normal but would like to know if anyone has tackled noisy shifting when bike has warmed up? When cold the trany shifts nice and quiet. When warm the trany makes a really loud "bang" or "snap" into gear. Kinda embarrassing for such a nice ride! Yes I have checked the tyrany grease and it's topped off.

2002 BMW K1200 LT.....Bought 6/15/2012
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post #2 of 10 Old Oct 10th, 2012, 6:42 pm
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Re: Warm vs. Cold Trany Shifting.

Quote:
Originally Posted by RonHolly
Yes I have checked the tyrany grease and it's topped off.
I hope you meant to say "tranny oil." If you are comparing it to Japanese tranny's then yes it is a bit more agricultural. However it is durable.
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post #3 of 10 Old Oct 10th, 2012, 8:10 pm
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Re: Warm vs. Cold Trany Shifting.

These are what are banging when you shift gears (shift dogs). Just note the lack of wear and this one has over 100K on it.

I run Mobil 1, 75W 140 in mine and it is pretty quiet.
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John
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post #4 of 10 Old Oct 10th, 2012, 11:53 pm
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Re: Warm vs. Cold Trany Shifting.

Quote:
Originally Posted by jzeiler
These are what are banging when you shift gears (shift dogs). Just note the lack of wear and this one has over 100K on it.

I run Mobil 1, 75W 140 in mine and it is pretty quiet.
Thanks for the visuals. When I tore down my 1999LT at 167K the dogs showed minimal wear after all the banging. I rode my 2004LT to 90K with no tranny problems. I use BMW 75W 140 gear oil.
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post #5 of 10 Old Oct 11th, 2012, 8:29 am Thread Starter
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Re: Warm vs. Cold Trany Shifting.

Quote:
Originally Posted by jzeiler
These are what are banging when you shift gears (shift dogs). Just note the lack of wear and this one has over 100K on it.

I run Mobil 1, 75W 140 in mine and it is pretty quiet.
Thanks John! I can now see why it's such a loud bang when shifted. When the dogs inner-mess there is about a 1/4"-1/2" movement towards the opposing gear slot/dog. Think I will try the 75w-140 gear oil as you are using. Thanks,,
Ron

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post #6 of 10 Old Oct 11th, 2012, 9:53 am
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Re: Warm vs. Cold Trany Shifting.

if you do not preload the shifter a bit she will clunk when shifting, all the 3 shaft trannys used on the Rs or the Ks the same

Gary
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post #7 of 10 Old Oct 12th, 2012, 3:26 pm
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Re: Warm vs. Cold Trany Shifting.

My cousin is the Technical Editor for the BMW Car Club of America's Monthly Magazine RONDEL. He both drives and rides BMW's and has done extensive research on oils and lubricants for all applications. He swears by Red Line Synthetic Oils and Lubes. I know of countless instances where Red Line Gear Oil stopped 2nd gear crunching in car transmissions of owners who were not smart enough to change the transmission oil regularly. I have nothing against Mobil 1; just have an expert in the family who advises me. Another product you may wish to try is B&G Extreme Pressure Concentrate added to whatever transmission oil you choose. I have personal experience with this product and have seen amazing results.

Best wishes,

Will
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post #8 of 10 Old Oct 12th, 2012, 7:50 pm
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Re: Warm vs. Cold Trany Shifting.

Oil thread alert...gotta go!
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post #9 of 10 Old Oct 22nd, 2012, 6:58 am Thread Starter
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Re: Warm vs. Cold Trany Shifting.

Quote:
Originally Posted by jzeiler
These are what are banging when you shift gears (shift dogs). Just note the lack of wear and this one has over 100K on it.

I run Mobil 1, 75W 140 in mine and it is pretty quiet.
I used mineral 85w-140 for the gear box and really made a big differance. Shifts a lot quieter and driving down the road it seems less noisy. Good suggestion and thanks.

2002 BMW K1200 LT.....Bought 6/15/2012

Last edited by RonHolly; Oct 22nd, 2012 at 7:41 am.
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post #10 of 10 Old Oct 22nd, 2012, 7:03 am
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Re: Warm vs. Cold Trany Shifting.

Nasty,..... swearing around oil, not good. I usually keep the real swearing for failures as a result of no oil, hopefully very rare If it really bothers you, snick her into gear first then press the starter.

Dennis
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