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"KRS/GT" Technical Q&A K1200RS/GT Technical Questions/Answers

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  #1  
Old 08-19-2018, 04:19 PM
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Crankshaft seal (Hall Sensor)

Trying to kill my oil leak, I managed to make it worse. I think I installed the seal on the crankshaft incorrectly. The manual doesn't show a clear picture. The shaft has a mark from the previous seal close to the cam chain gear, and as installed, the sealing surface on this one is to the very outside of the shaft. I'm an idiot. Didn't remember how the old one was positioned. Is this right or wrong?


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Old 08-20-2018, 06:01 AM
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Re: Crankshaft seal (Hall Sensor)

Hi Chris,
I have answered this question in my sticky on cam chain guide replacement. But, I need to know what you are using to guide you through this process. Clymer or BMW shop manual? You really do need to be using one or the other and not winging it with no guidance.
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Old 08-20-2018, 12:49 PM
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Re: Crankshaft seal (Hall Sensor)

Hi Kiwi,
I answered your queries in your sticky thread, but I don't want to hijack your thread for my 'F-up'.
I have another question: If I've inserted the seal properly, am I supposed to have the sealing surface of that seal angled in, towards the cam gear? When I installed the timing cover, that seal just pushed into place, naturally, the sealing lip is angled out. Is there some trick to get it folded in, so it seals properly? Does this make any sense? Am I overthinking this, like everything else?
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Old 08-20-2018, 01:08 PM
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Re: Crankshaft seal (Hall Sensor)

Preform it on a socket!Socket with an OD close to the cam gear flange.

Yes lip goes inward.And NO oil on the lip of a Teflon seal.
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Old 08-20-2018, 04:24 PM
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Re: Crankshaft seal (Hall Sensor)

Time zones in Kiwi Land are so out of whack with you lot up there that I cannot communicate easily at the same time, although there is a little overlap. Yes, Pierre is correct on this. Seal lip goes inwards and progressively larger sockets are ideal to anneal the lip to enlarge it just enough to slip over the cam chain flange. The seal will be a tiny bit larger than the cam flange when it slides on but it will close up snug by itself. Given the abuse you have dealt the seal forcing it backwards, I would probably put that seal down to experience and fit a new one. At least you don't have to wait two weeks for parts and don't worry about hijacking a thread - you are still on topic anyway
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Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID, Factory GT heated seat. 172,000km
1991 K1. Schwartz metallic black, fully restored. 74,000km SOLD
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Granddads ride
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