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Front Brake Lever Not Returning Completely

 
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CTDOM



Joined: 03 Jun 2017
Posts: 2

PostPosted: Mon Jun 12, 2017 10:24 pm    Post subject: Front Brake Lever Not Returning Completely Reply with quote

Hi All,

New to the K11's and have been lurking for a bit. I have recently acquired a 93 K1100RS. I have noticed that the front lever does not completely return to the full out position. If I push it out with my fingers it does go back but not on its own. Brakes work well and I don't feel anything strange. Fluid looks clean but I will flush some new fluid through.

Any thoughts?

Thanks!
DOM
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
Posts: 10082
Location: Bumf***, WA

PostPosted: Mon Jun 12, 2017 11:42 pm    Post subject: Reply with quote

You need to pull the pivot pin and lube things up a bit.

Not as easy as it sounds though.

Locate the Allen head of the pivot pin on the underside of the master cylinder.

Use a good Allen wrench fully seated in that head. It will be hard to turn (if memory serves, BMW used strong Loctite on that so it doesn't loosen and fall out) so you want the Allen wrench as deep into the head as possible so you don't strip the head and cause yourself more woes.

Once it reaches the end of the threads it will not fall right out so you may need to work it a bit to get it the rest of the way out.

Then clean it up, put some fresh lube on it and reinstall it but don't overtighten it when putting it back in.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
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CTDOM



Joined: 03 Jun 2017
Posts: 2

PostPosted: Tue Jun 13, 2017 9:33 pm    Post subject: Reply with quote

Yes indeed. I spent some time trying to find the best and snuggest fitting Allen wrench I had in the tool box. Unfortunately it was all for not since the bolt stripped anyways. It was not budging.

SO I have spritzed my best penetrant in the pivot and hope for the best.

Anyone have an extra master brake assembly?

Thanks,
Domenic
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
Posts: 10082
Location: Bumf***, WA

PostPosted: Tue Jun 13, 2017 11:29 pm    Post subject: Reply with quote

I've seen references to pounding a Torx bit into a stripped Allen head to get the bolt out.

Do you have any Easy-Outs on hand? That might also work.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
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robleyd
Flying Brick Rider


Joined: 23 Jul 2009
Posts: 398
Location: Murbko, Australia

PostPosted: Wed Jun 14, 2017 5:02 am    Post subject: Reply with quote

Those bolts seem too be made of the best quality german cheese Surprised However easy-outs worked for me, with a little bit of cautious drilling.
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1996 K1100 LT
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Grunter
Flying Brick Rider


Joined: 30 Sep 2015
Posts: 367
Location: North East England

PostPosted: Fri Jun 23, 2017 5:18 pm    Post subject: Lever not returning Reply with quote

This may be due to a different reason. I had a R1100RT which has the same basic front brake master cylinder and \i had this problem where it was not returning enough to close off the brake light switch.

After investigation this turned out to be a build up of corrosion inside the master cylinder that was making the friction too great to allow the lever to return. You may well find (as I did) you will also have replace the seals after cleaning out the cylinder
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1997 K1100LT
1994 R1100RS
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jay k.
Mad Brick Rider


Joined: 17 Apr 2003
Posts: 93
Location: E. Haddam, CT

PostPosted: Wed Jun 28, 2017 10:05 am    Post subject: Reply with quote

I had the same problem with my '96RS. I got used to pushing the brake lever back out with the back of my index finger so that the brake light would go off.
I ultimately replaced all of the the original rubber brake lines with braided stainless.
Once the new lines were properly bled, problem solved.
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'20 R1250RS - The RS
'96 K1100RS/SE - The Bagger
'05 R1100S Boxer Cup Replica - The Boxer
'14 Ducati Monster 1200S - The Duc
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
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PostPosted: Wed Jun 28, 2017 1:04 pm    Post subject: Reply with quote

When I bought my K1100RS in Malibu and rode it home up the coast it had this sticking brake lever issue. It was quite handy as a "hill holder" at stop lights on the hilly streets of San Francisco.

(I resolved it by pulling and re-lubing the pivot pin.)
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
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SugarHillCTD
Site Admin


Joined: 10 Oct 2007
Posts: 4240
Location: Now in Eastern Pennsylvania

PostPosted: Wed Jun 28, 2017 9:30 pm    Post subject: Reply with quote

Flying Duck wrote:
When I bought my K1100RS in Malibu and rode it home up the coast it had this sticking brake lever issue. It was quite handy as a "hill holder" at stop lights on the hilly streets of San Francisco.

(I resolved it by pulling and re-lubing the pivot pin.)


Hill holder. Laughing Good one Drake.

Great place for that.
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John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
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PeteRRT1160



Joined: 02 Aug 2016
Posts: 1
Location: Washington Michigan

PostPosted: Thu Jul 13, 2017 5:55 am    Post subject: Pivot bolt issue Reply with quote

CTDOM wrote:
Yes indeed. I spent some time trying to find the best and snuggest fitting Allen wrench I had in the tool box. Unfortunately it was all for not since the bolt stripped anyways. It was not budging.

SO I have spritzed my best penetrant in the pivot and hope for the best.

Anyone have an extra master brake assembly?

Thanks,
Domenic


Domenic, I had the same issue with my 1994 K 1100 RS. email me.[/b]
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