Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech
BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only.
Photo by Michael Jordan, enjoying a meal at sunset, Zangskar Valley, India

I haven't been everywhere...
but it's on my list!


Photo by Michael Jordan
enjoying a meal at sunset,
Zangskar Valley, India



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 6 May 2011
Registered Users
New on the HUBB
 
Join Date: Oct 2006
Location: Poole
Posts: 9
Gearbox output shaft oil seal

Hi,
Just wondered if anyone could help please?
Gearbox is leaking oil into swinging arm on my 1990 R100GS.
I need to replace the output shaft oil seal therefore.
Can I bang a new one in from the outside i.e. without splitting the gearbox, or does it have to be replaced from the inside, necessitating opening the gearbox to get to the inside of the gearbox cover? Am hoping won't have to open the gearbox as it involves heating etc.
Would really appreciate any know-how on this.
Thanks.
Reply With Quote
  #2  
Old 6 May 2011
AliBaba's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Apr 2001
Location: Norway
Posts: 1,379
You can change the seal without splitting the gearbox but you have to remove the carrier for the shaft.

Are you sure the seal is gone? Two other options:
  • Gearbox-vent clogged
  • There is a small v-shaped hole about the seal and this should be sealed with silicon or similar. If this hole is not filled it will act as a faulty seal.
Reply With Quote
  #3  
Old 6 May 2011
Registered Users
New on the HUBB
 
Join Date: May 2011
Posts: 4
how many km u got on it? n whare are ya?
is she a paralever?

Last edited by quinito; 6 May 2011 at 12:35. Reason: add on
Reply With Quote
  #4  
Old 7 May 2011
Registered Users
Veteran HUBBer
 
Join Date: Jun 2005
Location: Cape Town / South Africa
Posts: 207
I want to confer Alibabas comment on the vent right above the seal.
This vent was made for the older monolever models and allowed the oil filled swingarm to breathe into the gearbox. This vent are simply sealed with sealant on the parralever models but I have fixed numerous oil leaks which simply was this breather hole that was not properly blocked.

You should also make sure the gearbox vent at the speedo cable is clear as a blockage here can force oil past the seal.
The M6 screw holding the battery earth in place must have a small hole through the center. This screw sometimes get replaced by a regular screw or the hole can be blocked.

If you need to eventually replace the seal make sure the vent directly above it is blocked or else you will have some oil in the swingarm again.

My opinion is that it is safer to remove the lid for the installation of the oil seal the hard part being the removal of the output flange. Keep all the spacers in their right places and reassemble the same.
The big danger is damaging the flange to which the rubber boot attaches when removing the output flange or when installing the seal.

Torquing the nut holding the output flange to 220nm is very critical.
My best advice is to take the gearbox to a dealer for repairs and get them to service it at the same time replacing all bearings and seals.

You can save some money by removing and refitting it your self.
Reply With Quote
  #5  
Old 7 May 2011
Registered Users
Veteran HUBBer
 
Join Date: Feb 2002
Location: Coimbra, Portugal
Posts: 322
were is the v-shaped hole?

on the top or bottom?

in the right or left? (any photos?)

I’m having the same problem and I will try to block the hole!

thks
__________________
bernardo feio (Portugal)
2.5 Land Rover Lightweight / BMW R80 G/S PD / Toyota HZJ 78
Reply With Quote
  #6  
Old 7 May 2011
Registered Users
Veteran HUBBer
 
Join Date: Jun 2005
Location: Cape Town / South Africa
Posts: 207
Quote:
Originally Posted by bernardo feio lightweight View Post
were is the v-shaped hole?

on the top or bottom?

in the right or left? (any photos?)

I’m having the same problem and I will try to block the hole!

thks

On top
Reply With Quote
  #7  
Old 10 May 2011
Registered Users
Veteran HUBBer
 
Join Date: Feb 2002
Location: Coimbra, Portugal
Posts: 322
I’m having this problem for quite some time. (the recon gearbox that I bought to a GS didn’t have the V hole covered)

During the weekend I cleaned all that oil with petrol and I put some liquid gasket component in the hole

As much as I can notice the problem is now solved!!!

I didn’t had to remove the transmission neither the transmission housing

great!
__________________
bernardo feio (Portugal)
2.5 Land Rover Lightweight / BMW R80 G/S PD / Toyota HZJ 78
Reply With Quote
  #8  
Old 14 May 2011
Registered Users
Veteran HUBBer
 
Join Date: Oct 2002
Location: Stockholm - Sweden
Posts: 317
Second Alibabas comments/replies.
__________________
Drive Safely,
Albert
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
leaking seal between gearbox and drive shaft KevOK BMW Tech 2 3 Nov 2009 10:52
kle gearbox output shaft wildmetal Kawasaki Tech 0 15 Apr 2008 13:40
Output shaft(ed) mattpope Honda Tech 5 8 Mar 2008 13:38
Gearbox output shaft seal XT600E mbishop Yamaha Tech 4 12 Mar 2006 02:35
XL600 (LMF - '86) - Output Shaft Seal mkirby Honda Tech 5 23 Apr 2005 00:09

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now
, and add your information if we didn't find you.

Next HU Eventscalendar

HU Event and other updates on the HUBB Forum "Traveller's Advisories" thread.
ALL Dates subject to change.

2024:

2025:

  • Queensland is back! May 2-4 2025!

Add yourself to the Updates List for each event!

Questions about an event? Ask here

HUBBUK: info

See all event details

 
World's most listened to Adventure Motorbike Show!
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)



Ripcord Rescue Travel Insurance.

Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.

Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.

Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!


 

What others say about HU...

"This site is the BIBLE for international bike travelers." Greg, Australia

"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK

"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia

"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA

"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada

"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa

"This is the answer to all my questions." Haydn, Australia

"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany

Lots more comments here!



Five books by Graham Field!

Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook

"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.



Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!

New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.




All times are GMT +1. The time now is 16:27.