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Thedodge Brick Rider
Joined: 28 Apr 2011 Posts: 33 Location: Old Isleworth, middx, West london, England.
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Posted: Tue Jun 14, 2011 4:08 pm Post subject: clutch replacement |
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Clutch is slipping under heavy load, due to my oil leak. Engine oil, not gearbox. I don't have a problem doing this work, i am trying to find out if there is a way of removing the back end of the bike without disconnecting tha abs modulator, rather, unbolting and "tying"it up out of the way? Any first hand information from those who have done this would be much appreciated.  _________________ K1100 lt 97' |
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whyoldbill Flying Brick Rider
Joined: 12 Jun 2006 Posts: 440 Location: in the boonies, northwest of Columbus, Ohio
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Posted: Tue Jun 14, 2011 4:56 pm Post subject: Re: clutch replacement |
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| Thedodge wrote: | Clutch is slipping under heavy load, due to my oil leak. Engine oil, not gearbox. I don't have a problem doing this work, i am trying to find out if there is a way of removing the back end of the bike without disconnecting tha abs modulator, rather, unbolting and "tying"it up out of the way? Any first hand information from those who have done this would be much appreciated.  |
From my experience, and I tried everything I could think of to avoid pulling that abs modulator, I can tell you that you will never get that plate out that it sits on if you don't remove the modulator.
It's really not as bad as it might seem. Upon reassembly, bleed the air from the modulator and then the calipers.
Bill _________________ '02 - GL1800
The desired effect is what you get when you improve your interplanetary funksmanship - George Clinton |
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2xcelr8 Big Brick Rider
Joined: 29 Sep 2009 Posts: 71 Location: SE Wisconsin
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Posted: Tue Jun 14, 2011 10:12 pm Post subject: Pull It. |
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+1 I agree 100%. Been there, tried that. You can't move it far enough with the hard lines connected. _________________ Doug
'96 K1100RS, '94 K1100LT, '84 Honda VF700F Interceptor (4 sale) |
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Scott_Anderson Site Admin
Joined: 05 Sep 2006 Posts: 3122 Location: Central Iowa, USA
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Posted: Tue Jun 14, 2011 10:50 pm Post subject: |
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Dont' waste your time trying to avoid removing it. At the very least remove/disconnect the brake(hard) lines, you can leave the electrical connected and tie the unit up out of the way and be ok. I did this with my '97 when I did my clutch spline lube, only cause I hadn't figured out how to remove the cover over the electrical connections.
I removed the entire assembly when I did the clutch on the '95 and believe me it was a whole lot easier working in there without that abs unit hanging in the way. _________________ Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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Rafal Flying Brick Rider

Joined: 05 Jan 2009 Posts: 257 Location: Wroclaw, Poland
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Posted: Wed Jun 15, 2011 3:55 am Post subject: |
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Hello!
When changing the output seal one must remember, that the new seal have to be installed dry and it must face 0,5 mm above engine block surface.
And remember to mark clutch housing assembly parts in order to put them back the same way the were assembled in factory (balancing issue).
Best regards, _________________ Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone , but not to far .
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micky77 Brick Rider
Joined: 05 Jun 2007 Posts: 25 Location: Fort Collins, Co
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Posted: Wed Jun 15, 2011 6:59 pm Post subject: |
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| Any tricks to installing a new seal and keeping the face at 0.5 mm above the block surface? |
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Scott_Anderson Site Admin
Joined: 05 Sep 2006 Posts: 3122 Location: Central Iowa, USA
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Posted: Wed Jun 15, 2011 9:33 pm Post subject: |
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Very slow and carefully.
I personally fabricated a setting tool out of a black iron pipe coupling and a couple of worm band clamps. It wasn't perfect but it did work. _________________ Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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Rafal Flying Brick Rider

Joined: 05 Jan 2009 Posts: 257 Location: Wroclaw, Poland
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Posted: Thu Jun 16, 2011 2:01 am Post subject: |
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| micky77 wrote: | | Any tricks to installing a new seal and keeping the face at 0.5 mm above the block surface? |
There You go:
http://k-technik.pytalhost.com/index.php?option=com_content&task=section&id=19&Itemid=93 3rd drawing from the top.
I have had the tool made to work with big size screw instead of handle )I can look for drawings in the evening). With a little help of 2kg hammer work like a charm !
Best regards _________________ Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone , but not to far .
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old guy old bike Flying Brick Rider
Joined: 18 Jul 2007 Posts: 373 Location: Lisbon, OH
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Posted: Thu Jun 16, 2011 7:47 am Post subject: |
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I have a buddy that works at a GM dealer. They had a seal tool that worked perfect. He didn't know what it actually fit because the mechanics just had a big box of seal installation tools and grab the one that looks right to them. Not sure that it is an effective process at the hourly rates charged.
Anyway, I just gave him my old seal and he matched it up.
Jeff _________________ 1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Thu Jun 16, 2011 8:37 am Post subject: |
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If it were the rear main seal leaking then it wouldn't oil the clutch. The clutch nut O-ring on the other hand... _________________ 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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Thedodge Brick Rider
Joined: 28 Apr 2011 Posts: 33 Location: Old Isleworth, middx, West london, England.
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Posted: Thu Jun 16, 2011 2:38 pm Post subject: |
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| Flying Duck wrote: | | If it were the rear main seal leaking then it wouldn't oil the clutch. The clutch nut O-ring on the other hand... |
It does seem to be that in most cases it is indeed the "O" ring that fails, and not the main seal. If the main seal is ok then i will save myself the work. I can machine a setting tool if needed. _________________ K1100 lt 97' |
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jr'sbmw Big Brick Rider
Joined: 04 Nov 2008 Posts: 54 Location: Fl
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Posted: Fri Jun 17, 2011 6:56 am Post subject: |
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| I pull the abs unit up on my LT and wire it to a small piece of wood across the frame. Then remove the bolts holding the tray. I have never had trouble removing the tray and have done this on 3 occasions without problems. |
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micky77 Brick Rider
Joined: 05 Jun 2007 Posts: 25 Location: Fort Collins, Co
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Posted: Fri Jun 17, 2011 12:12 pm Post subject: |
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| So back to the rear main seal - how does one know if it needs replaced or not. I.E. - oil dripping out, physical burn, or what - thanks. |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Fri Jun 17, 2011 1:32 pm Post subject: |
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If your weep hole is weeping then you need to take the transmission off to determine where the oil is leaking. If it's leaking inside the clutch basket then it's the O-ring. If it's leaking in front of the clutch basket then it's the seal.
If it's been leaking for a while and has contaminated your clutch plate then it's the O-ring. _________________ 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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Number 6 Flying Brick Rider

Joined: 05 Feb 2011 Posts: 481 Location: Paris area, France
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Posted: Sun Jun 19, 2011 4:15 pm Post subject: |
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| jr'sbmw wrote: | | I pull the abs unit up on my LT and wire it to a small piece of wood across the frame. Then remove the bolts holding the tray. I have never had trouble removing the tray and have done this on 3 occasions without problems. |
+1, no need to remove the ABS2 unit. _________________ I am not a number, I am a free man.
94 K1100LT |
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kstones Brick Rider
Joined: 11 Mar 2006 Posts: 38 Location: N Yorks, England.
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Posted: Mon Jun 20, 2011 10:11 am Post subject: clutch repair |
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the ABS unit is a bugger but has to be moved to get out many pieces including the gearbox itself. when i did my clutch i could not see how to remove the ABS completely (how to disconnect the cables) so i just disconnected the pipes and hung it up. A real PITA. The swage nut spanners (wrenches??) i found here in the UK would not fit over some of the nuts as the spanner walls were too thick; so i put had a look to see where they were being restricted and put them in the vice and filed them down with a nice big rough rasp so that they fitted fully over the nuts; you don't want the nuts getting rounded off so don't be afraid of filing down the spanners as much as you need; you'll still have plenty of wall thickness to do the job. If a spanner goes AWOL on you it's cheap to get another; not so if you round off a swaged end pipe nut!! The bleeding of the system is not a big job; bleed it down to the ABS unit first, then go to the calipers one at a time, filling and bleeding till air bubble free at each stage.
i was told later you can get the ABS unit off by disconnecting that bunch of cables going into it by removing a cover on the back of the unit and then getting at a plug unit underneath the cover. That would have made life a lot easier.
Getting the exhaust off needs a 13mm for all the exhaust nuts; but if they're tight and corroded then you might need a 12 mm "tapped" on to do the removal. A stud breakage is nasty but will need individual attention. A full set of new studs and nuts and gasket rings makes a nice job of the refit.
my main problem though was supporting the engine and the rest of the bike when the stand and the gearbox itself are removed. However you do it make it safe - i'm sure you DON'T need to be told that, but just in case....!!
The German way of putting all the bits together left me quite unimpressed by the lack of consideration for us poor buggers who need to get in there after normal use. With the ABS out of the way it is all a lot easier.
When putting the new O ring onto the end of the output shaft first wrap the threads with electrical tape as many times round as need to smooth the threads and preserve the O ring while getting it onto the shaft, then take off the tape.
The necessity of the correct seal position can be understood as you should be able to see the drain hole further in after the seal has been fitted; the consequences of covering it are obvious. Just tap it in a little at a time with a bit oversize socket or maybe something more refined and have good look before doing any more and do not go too far.
After you finish each stage of the rebuild take time to go round all the bolts and nuts etc you've fitted and check they're tight; i didn't do that with the centre stand and found it hanging off a bit after getting back on the road and had to fix it correctly then; oh dear.
As they say it's not a big job; just a hell of a lot of little ones, one after another.
Good luck
Tony. |
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Jeeves Big Brick Rider
Joined: 25 Apr 2011 Posts: 72 Location: Vancouver Island,B.C. Canada
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Posted: Mon Jun 20, 2011 12:29 pm Post subject: |
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| Flying Duck wrote: | | If it were the rear main seal leaking then it wouldn't oil the clutch. The clutch nut O-ring on the other hand... | Duck do you still go by the email i saw on your parts list??if so i sent you a question,,if not let me know how to buy from you Jeeves,,ps i'm on paypal _________________ K1100 RS 1993,the fast mystic red one with the burnished gold stuff
K 75 C 1986 black,naked and collector plate
R 75/5 1971 black naked and beautiful and under construction,,but getting closer by the day |
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Number 6 Flying Brick Rider

Joined: 05 Feb 2011 Posts: 481 Location: Paris area, France
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Posted: Mon Jun 20, 2011 4:10 pm Post subject: |
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| Rafal wrote: | | it must face 0,5 mm above engine block surface. |
Where did you get that info? Always seen and did myself at exact engine block surface. _________________ I am not a number, I am a free man.
94 K1100LT |
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Scott_Anderson Site Admin
Joined: 05 Sep 2006 Posts: 3122 Location: Central Iowa, USA
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Posted: Mon Jun 20, 2011 7:12 pm Post subject: |
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| Number 6 wrote: | | Rafal wrote: | | it must face 0,5 mm above engine block surface. |
Where did you get that info? Always seen and did myself at exact engine block surface. |
BMW Tech bullitin #2798 issued 11/19/97. _________________ Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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Number 6 Flying Brick Rider

Joined: 05 Feb 2011 Posts: 481 Location: Paris area, France
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Posted: Tue Jun 21, 2011 1:07 am Post subject: |
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| Scott_Anderson wrote: | | Number 6 wrote: | | Rafal wrote: | | it must face 0,5 mm above engine block surface. |
Where did you get that info? Always seen and did myself at exact engine block surface. |
BMW Tech bullitin #2798 issued 11/19/97. |
Is it accessible online? _________________ I am not a number, I am a free man.
94 K1100LT |
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