K11 Owners Group

Milton

Greetings,

I own a 1992? K100RS which so far has been a very reliable ride. I purchased it with 27.5k miles and have put about 9k on it since my purchase. Several weeks ago the right side (facing bike) fork seal blew so I decided it was time for a major tear down and maintenance service. I have got the thing down to just the transmission and engine still in the frame and I have some questions.

1. I replaced seals in both forks. My manual (Clymers) shows that my forks are for a 1991 model yet the PO and title both say 1992. Is there a way to tell for sure what year my bike is supposed to be?

2. The bobbins on the right side disk need replacing (will replace both sides) and what I have found on this site say there should be 3 spring? type bobbins (every fourth bobbin) but I don't see any difference in the bobbins that are currently on the disk. Is this K1100 specific or should the k100 be this way also? Are bobbin kits available with the correct number of normal and spring type bobbins?

3. I have my final drive off and noticed that the U-Joint has a fair amount of side-to-side play (perpendicular to the length of the drive line). Is this normal? Seems to me that there should be no side-to-side movement.

4. There was fluid in the bottom of the boot (between final drive and swing arm) when I removed the final drive. Is this normal or do I have a transmission seal or final drive seal that is leaking?

5. Where the clutch actuator arm goes into the transmission there is a little rubber bootie acting as a dust seal. When I removed the clutch cable the actuator arm fell out of this bootie and now transmission fluid is leaking out. Is this normal or is a seal gone?

6. While riding if I take my hands off the handle bars the bike pulls to the right. I can counter act this by sliding my butt off to the left and can keep it moving in a straight line but it does take some effort. What should I look for to get the think to track true?

I hate to ask so many questions right off the bat but I want this bike back to normal as the weather is turning better and I am anxious to get my leg back over her.

I'm also replacing the rubber with Michelin Pilot Road 2's and I am anxious to see how they perform as they cost an arm and a leg. Had regular Michelin Pilot Road's and got very good performance out of them; handled well and good milage (~ 11-12k).

Thanks for any advice.

Milton S.

Shameless plug.

The BMWMCC is proud to present the
36th Annual Top O' The Rockies Rally!

Paonia, Colorado

July 24-27, 2008

Flying Duck

Comments in red.

mnb · Posted: Sun Mar 16, 2008 1:18 am Post subject:

I'd recommend installing gaitors on your forks unless you like replacing seals.
_________________
M N B
1997 BMW K1100LT ABS Special Edition
2003 Husqvarna TE610e
2007 Harley Davidson Road King
2009 BMW F800GS
2011 Husqvarna TE310
2014 Ducati Multistrada Pikes Peak MNB Edition

Milton · Posted: Thu Mar 27, 2008 12:40 am Post subject:

Mr. Duck,

Thanks for your reply. I have figured out, puzzled out and just plain used your advice on some of my issues.

1. Bike was assembled 08/1991. Thanks for that link it was very useful.

2. I looked at the bobbins more carefully and every fourth one is different. There is a small ring/spring around them. The spring bobbins I took off had the spring/ring in pieces. The left side disk is very loose. I would think that they should last more than 36K. Will replace both sides.

3. Again thanks for the "synchronize u-joints" reference. There I found out that the U-Joint on the final drive is not part of the final drive but just 'stuck' on the spline. I was able to pry it off and the spline shaft running back into the fd was nice and tight as it should be. Slop was in the male/female match up in the spline. Didn't look like a seal was gone. Stupid me, I have kept an eye on the fluid level of the fd since I have owned the bike and it has never dropped. I think the fd seal is fine.

5. The bootie on the back of the transmission was shot. Got a new one.

6. Good to know they all drift to the right a bit.

Some more advice.

I have got down to my clutch and have mic'ed it at .198-.200 (new thickness is .198 - .218). Does it have much life left? I see from the Clymer's manual that they recommend replacement at .177. It is still within new tolerances.

The previous owner took off the ABS and told me he didn't think that the first generation ABS helped that much. He did sell the units though, so perhaps profit was his motive. The ring gears for the ABS are still on the wheels. I tried taking them off, since they have no useful purpose, but the hex bolts are wicked tight and I stripped out 2 heads before I gave up. How do you get those bolts out?

Do you loctite all bolts back in their holes when you reassemble or should torque specs be good enough?

What is the difference between a k100rs4v and k1100rs other than 100 more cc and a bit more torque?

Thanks,

Milton S.

Milton · Posted: Thu Mar 27, 2008 12:44 am Post subject:

lrome48 · Posted: Thu Mar 27, 2008 1:04 am Post subject:

You can also go with OEM BMW gaiters. I use the R80GS 11 rib gaiters. I'll round up the part number for you. I chose the BMW gaiter over the rancho because they are heavier gage, and are not tapered. The Ranchos sag over time, the OEM don't.I just think they look better. IMHO

I got them from Max BMW, and used the OEM Stainless clamps. Some like to use black plastic ties. Both work, matter of taste. The gaiters do prolong the life of the seals, without a doubt and are a worthy investment either way.

Larry
_________________
Larry
K75
97 K1100 LT Specialk under construction
87 SpecialK75 Carols done!
2004 K12 Special the 'Beast' delivered
K1100 Standard Custom Gone but not forgotten

Flying Duck · Posted: Thu Mar 27, 2008 1:33 am Post subject:

Shoganai · Posted: Thu Mar 27, 2008 2:01 am Post subject:

Isn't this the greatest K Site EVAR!!!! Cool

I love reading answers to questions I have yet to think to ask! Very Happy

Welcome newcomer! Wink

_________________
1993 K1100RS aka The Shop Whore
1994 K1100RS aka Blue Streak

The long road is a rainbow and the pot of gold lies there.
So slip the chain and I'm off again,
You'll find me everywhere. I'm a Rover. - JT

Nana korobi ya oki

tmarshall57 · Posted: Fri Mar 28, 2008 12:19 pm Post subject:

Mystic Red · Posted: Sat Mar 29, 2008 4:43 am Post subject:

Milton · Posted: Sat Mar 29, 2008 9:35 pm Post subject:

Milton · Posted: Sat Mar 29, 2008 9:37 pm Post subject:

BobZ(IL) · Posted: Sat Mar 29, 2008 11:15 pm Post subject:

If you don't like the look of gaitors just keep your fork tubes sprayed with WD40 or equivalent. Don't let bugs and crap harden on the tubes and your seals should last for a long, long time.
_________________
'93 K1100LT
'78 R100S
'05 R1200GS
BMWMOA, CRBMWOA, ABC, K11OG #997

Live well, do good work, enjoy the ride.

Off the grid · Posted: Sat Mar 29, 2008 11:39 pm Post subject:

That bike looks fantastic pre-teardown.

Couple questions:

1. What shock? Works?
2. The bars look really high? Barbacks I assume?

Keep us posted! I love it when someone new gets the bug.
_________________
Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"

Mystic Red · Posted: Sun Mar 30, 2008 5:05 am Post subject:

Shoganai · Posted: Sun Mar 30, 2008 5:14 am Post subject:

Milton · Posted: Sun Mar 30, 2008 4:15 pm Post subject:

Klinker · Posted: Mon Mar 31, 2008 8:07 pm Post subject:

Off the grid · Posted: Mon Mar 31, 2008 8:43 pm Post subject:

Well Drake is like the Chuck Norris of K11s.

He's made up of spare parts and ABS brains.
_________________
Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"

Milton · Posted: Sun Apr 27, 2008 9:54 pm Post subject:

For who ever is interested here are a couple of photos of the finished product after a 90 mile test drive. Took awhile but she is finally back together and running fine. Have a few electrical issues, probably plugged into the wrong connectors. Made my own manometer to sync the throttle bodies and it worked quite well. Much smoother engine and accelerates so nicely now.

Put new rubber on her, Pilot Road 2's, and man are they better than the Pilot Roads that came with the bike.

I am glad it is back together and in riding shape.

_________________
Jethro Tull: Thick as a Brick!

1992 K100RS 48K. Dead for now.
1998 Triumph Tiger 43K->56K. Doin it in the dirt.
1978 Honda CB400T 32.5K. For my boys.