R1100gs rear main seal

[boxerscott]

My 1995 manufacture engine requires a new main rear seal. I have been sent one from motorworks who insist it is the correct one. I question that cos in a nutshell it wont fit or even start to fit into the recess where i very carefully, painstakingly removed the old one from. I even have the bmw special tool and a fecking large rubber mallet for caressing it in with. There is no way this seal they have sent me can be right. It is a 65x85x7mm seal. For starters the crank case recess is not 7mm deep and the the leading outer edges of the seal seem way too fat to lead into the recess. I have noticed on the Parts list post that 2 different seals were used in manufacture during 1995 a 5mm one and a 6mm one. Can anyone help?

Chris.

 

[Stewart H]

Is the numbering on the old seal legible? how do the two seals compare ?

Stewart

 

[boxerscott]

If life could be so simple! The old seal, baked in for 14 years did not surrender itself so easily! It had to be picked and teased out bit by bit carefully and painstakingly

 

[Steptoe]

My 1995 manufacture engine requires a new main rear seal. I have been sent one from motorworks who insist it is the correct one. .

Ring your local or any BMW dealer and give them the frame number - they'll send you a seal that will fit, and i expect for less money than you've already paid. .

Why do people always do it the hard way.

 

[Ash]

Ring your local or any BMW dealer and give them the frame number - they'll send you a seal that will fit, and i expect for less money than you've already paid. .

Why do people always do it the hard way.

i take mine to a nice middle aged gentleman when my rear end leaks
who does a superb job and may i say at most satisfactory costs.

 

[boxerscott]

Ring your local or any BMW dealer and give them the frame number - they'll send you a seal that will fit, and i expect for less money than you've already paid. .

Why do people always do it the hard way.

Done this, they are coming up with the same product code number, which is a 65x85 x7mm seal... it does not fit. Point taken about using your dealer other than the others, but they do not carry large amount of stocks...

Chris.

 

[boxerscott]

Spoken at length again with Motorworks. They insist that according to thier reference my 95 bike should need the 85mm single seal. I have measured the crank bore recess and i reckon it is more like 83mm. They inform me that there is a an 83mm seal which is identical in form to the 85mm and forms part of a two seal job for later engines (1997.) The Clymer manual (up to 05) makes no reference to the two seal variant. I can see no way in which I have the later engine as the depth of the crank bore recess can only be about 7mm. I have ordered the 83mm seal as I am hoping, er praying, for it to fit into the recess.

 

[boxerscott]

Penny has dropped and problem is solved. Sounds ridiculous but i was trying to put new seal over what was left of old one.They have a metal ring encapsulated into them which exposed itself as i was picking and prising it out. I thought this was a structural part of the crank bore Spent fecking ages cleaning off that rubber.

 

[Stewart H]

glad you found that, I was wondering whether your engine was a one off, see you at the GOTC

Stewart

 

[MattW]

Penny has dropped and problem is solved. Sounds ridiculous but i was trying to put new seal over what was left of old one.They have a metal ring encapsulated into them which exposed itself as i was picking and prising it out. I thought this was a structural part of the crank bore Spent fecking ages cleaning off that rubber.

Oops

Glad you've solved the problem