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R1100 Pulley upgrade


r77toy

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Here's a quoted response :

 

"The original pulleys were spot welded crank and would separate, The alt pulley was alloy.. and sometimes would loosen up..

Yes I know I have seen both of the factory bad ones with over a 100k to...

But there were "some failures"

ps it was supposed to be for a better belt to..

http://www.nmpcs.com/r11r/v-belt.pdf"

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Afternoon Jeff

 

Your 1996 should have the later belt & pulley. Supposedly any 1100 built after 09/1994 had the better belt & pulley.

 

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  • 2 weeks later...
OldBMWMaster
Afternoon Jeff

 

Your 1996 should have the later belt & pulley. Supposedly any 1100 built after 09/1994 had the better belt & pulley.

 

Mine was manufactured 10/95...it broke last week. Total separation of the pulley and the metal interior wheel that sends the signal to the HES

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Afternoon Jeff

 

Your 1996 should have the later belt & pulley. Supposedly any 1100 built after 09/1994 had the better belt & pulley.

 

Mine was manufactured 10/95...it broke last week. Total separation of the pulley and the metal interior wheel that sends the signal to the HES

 

Afternoon OldBMWMaster

 

I don't understand the total separation (what happened?).

 

The pulley clamps the rotor in place when torqued down.

 

If the rotor falls off the pulley upon pulley removal the service manual has a caution to glue it back on the pulley before re-assembly.

 

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My RS was manufactured in 11/95 and has the later type belt and pulley. The Haynes manual explains how to tell the difference.

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OldBMWMaster

I don't know how it happened. All I know is there was total separation. I bought some metal/metal glue and put it all back together. I am headed out in a few minutes for a 3 day trip. I have also ordered the upgraded pulley.

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OldBMWMaster

Got back last night; over 700 miles. No problems with the pulley. I guess you really can glue together metal pulleys.

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