ADVrider

Go Back   ADVrider > Bikes > Road warriors
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-16-2013, 03:16 PM   #1
Cpt. Ron OP
Advrider #128
 
Cpt. Ron's Avatar
 
Joined: Jul 2001
Location: Sacramento, CA
Oddometer: 3,243
R1150RT Front Crankshaft seal

OK, so what's the trick to replacing the seal that is on the front of the crankshaft within the alternator bracket? Mine leaks, even after replacement. The manual calls for "pre-shaping", which I'm not doing or not doing right. I'm tired of tearing the RTP down to this level to try to fix this.

Any advice?
__________________
Cpt. Ron

"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner
Cpt. Ron is online now   Reply With Quote
Old 03-16-2013, 06:13 PM   #2
Cpt. Ron OP
Advrider #128
 
Cpt. Ron's Avatar
 
Joined: Jul 2001
Location: Sacramento, CA
Oddometer: 3,243
I think I found it:

http://www.maxbmwmotorcycles.com/fic...11338342_1.pdf
__________________
Cpt. Ron

"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner
Cpt. Ron is online now   Reply With Quote
Old 03-16-2013, 09:40 PM   #3
bensgone
Gnarly Adventurer
 
bensgone's Avatar
 
Joined: Nov 2009
Location: nw oregon
Oddometer: 263
Pre shape in what way? What year is your rt?
bensgone is offline   Reply With Quote
Old 03-17-2013, 05:51 AM   #4
kraven
Hegelian Scum
 
kraven's Avatar
 
Joined: Jul 2005
Location: Asheville NC
Oddometer: 4,792
You said front crank seal in your op and then posted something about a fix for the rear seal as a solution.

I think you should take it to someone and pay them for their expertise, ride your bike, and be happy.
__________________
So there I was walking into a biker bar in Chattanooga with liberty spikes on my head and a drag queen beside me... - bcurvin
kraven is offline   Reply With Quote
Old 03-17-2013, 10:17 AM   #5
Cpt. Ron OP
Advrider #128
 
Cpt. Ron's Avatar
 
Joined: Jul 2001
Location: Sacramento, CA
Oddometer: 3,243
I may be new to these seals, but I won't be paying someone to wrench on my bikes. The parts are costly enough without paying for labor. I would be out riding, but I'm wrenching and posting here, instead.

Yes, I said front seal. The factory manual I have says that pre-shaping is required before installing the front crankshaft seal (mentioned in the first post). The link I posted demonstrates BMW's oil seals that need to be "pre-shaped" before installation (wasn't an easy find, either). I imagine it's similar to other seals on my bike as well as other BMW's. It also mentions a special tool which is typical for manufacturers.

I was hoping that someone would: #1 understand what I'm talking about and/or have been here; #2 have a routine or procedure that works for installing the seal correctly.
__________________
Cpt. Ron

"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner
Cpt. Ron is online now   Reply With Quote
Old 03-17-2013, 11:16 AM   #6
k-moe
Beastly Adventurer
 
Joined: Jun 2012
Oddometer: 2,544
From reading that Pdf, what they want you to do is bend the lip of the seal toward the inside of the engine case before installing it so that it will press against the shaft once it's installed. I think you can use a bit of thin-walled tubing to make the tool. It will need to have an i.d. that will allow it to slip over the shaft, and an o.d. that isn't so large as to damage the seal. My thought is that you lubricate the tube/tool and place it in the seal from the front so that it bends (pre shapes) the inner lip of the seal (leaving the back of the tube flush with the back of the seal so you don't damage the shaft during installation), then you place the tube/tool on the shaft and drive the seal in, and finally remove the tube.
Having said that, it seems that the tool is only needed if the shaft that the seal is going on isn't chamfered. If the shaft does have a chamfered end it looks like you can shape the seal with your fingers as you install it onto the shaft.

This is only a thought, not a description of the factory-approved procedure.

Alternatively you could go to a bearing house with the old seal and see if they can match it to a more traditional type of oil seal that wouldn't require a special instillation technique.


Also....try this http://www.bmwmoa.org/forum/showthre...l+installation

k-moe screwed with this post 03-17-2013 at 11:29 AM
k-moe is offline   Reply With Quote
Old 03-17-2013, 11:29 AM   #7
Cpt. Ron OP
Advrider #128
 
Cpt. Ron's Avatar
 
Joined: Jul 2001
Location: Sacramento, CA
Oddometer: 3,243
Replacing the seal is pretty straight forward for anyone who has done something similar. The only difference is pre-shaping the inner seal lip. Why they did this, I don't know. Sure, the seal may last longer than traditional seals in this duty, but if you have to replace it whenever the alternator comes out of the bike, I think the benefit is lost.

Here you go:






The new seal:






This is the point where the pdf document I linked above comes in to play. If you don't do this step, the inner lip folds the wrong way during installation, causing leaks. The factory manual doesn't go into detail on this step.

The new seal after pre-shaping with fingers and some oil:




Wrap some electrical tape over the nose and lubricate with some oil.




The trick is to keep the inner lip of the seal "going the wrong way" when pushing the seal on the crankshaft.




Appropriate seal driver:




Gently and squarely drive it home:




Remove the tape and you're done. Well, you still need to put the rest of the bitch back together....

__________________
Cpt. Ron

"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner
Cpt. Ron is online now   Reply With Quote
Old 03-30-2013, 04:36 PM   #8
bensgone
Gnarly Adventurer
 
bensgone's Avatar
 
Joined: Nov 2009
Location: nw oregon
Oddometer: 263
Nice pic-write up, thank you!
bensgone is offline   Reply With Quote
Old 03-30-2013, 07:12 PM   #9
Anorak
Woolf Barnato
 
Anorak's Avatar
 
Joined: Jul 2004
Location: OAK
Oddometer: 33,373
I'm recall that the front cover doesn't have to come off to remove the alternator. Remove the ABS assembly.
__________________
'Gonna get me a six pack...push people off the highway!'

"they live off the carrion of our mutual distrust and bribe us with symbols that equate hatred with manhood."

"I mean at the end of the day, I was addicted to Starting Fluid for Christ's sake!"

"Yeah, that guy sure is terrible at touching moms"
Anorak is offline   Reply With Quote
Old 04-04-2013, 08:57 PM   #10
Cpt. Ron OP
Advrider #128
 
Cpt. Ron's Avatar
 
Joined: Jul 2001
Location: Sacramento, CA
Oddometer: 3,243
Quote:
Originally Posted by Anorak View Post
I'm recall that the front cover doesn't have to come off to remove the alternator. Remove the ABS assembly.
I thought of that at the time. That seemed like more work than the way I went (per the manual) due to the multiple brake lines and such. In hindsight, you may have been right......
__________________
Cpt. Ron

"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner
Cpt. Ron is online now   Reply With Quote
Old 04-04-2013, 08:59 PM   #11
Cpt. Ron OP
Advrider #128
 
Cpt. Ron's Avatar
 
Joined: Jul 2001
Location: Sacramento, CA
Oddometer: 3,243
Quote:
Originally Posted by bensgone View Post
Nice pic-write up, thank you!
Thank you. However, not all (was) well in my garage.....

it didn't work. Still leaked. I'm better at taking pictures and riding than working on flower-delicate BMW seals.....

So I went a different route. Stay tuned.
__________________
Cpt. Ron

"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner
Cpt. Ron is online now   Reply With Quote
Old 04-06-2013, 09:23 PM   #12
bensgone
Gnarly Adventurer
 
bensgone's Avatar
 
Joined: Nov 2009
Location: nw oregon
Oddometer: 263
Staying tuned! This is my first bmw, 02 1150rt, so you bet I am staying tuned. I bought it on new years day and love it so far but didn't realize the inherant problems this model till later. The abs light is unplugged but the servo still works so that is first, seals and tchain rails after. Please pm me with any info you have for me, thanks!
bensgone is offline   Reply With Quote
Old 05-16-2013, 06:13 AM   #13
Ianuk
Adventurer
 
Joined: Jan 2011
Location: Norwich. Norfolk. UK
Oddometer: 80
How did you get on with a different seal, I'm having the same trouble with mine.
__________________
Alice: how long is forever?
White rabbit: Sometimes, just one second.

Be kind whenever possible. It is always possible.
-the Dalai Lama
Ianuk is offline   Reply With Quote
Old 05-16-2013, 10:00 AM   #14
larryboy
Chopper Rider
 
larryboy's Avatar
 
Joined: Jan 2005
Location: On a set of 50,000 mile tires.
Oddometer: 14,248
Quote:
Originally Posted by Cpt. Ron View Post
it didn't work. Still leaked.

How's the knee?


Here's how I do that type of seal...put it over the snout backwards, it will pre-form it, leave it like that for a day, take it off and install properly as quick as you can. Forming it with your fingers will leave it not quite even at some point and it will leak again. Quality seals come with a form popped into the seal, it keeps it formed until the time the form is removed and the seal installed.
larryboy is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 10:47 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014