Getting the clutch oil seal out from the gearbox.

[Steve in Kent]

I'm in the process of replacing the gearbox on my 2002 R1150GS and the clutch slave bore and oil seal looked very manky.

I've cleaned all the gunk in the bore and went to get that oil seal out, but it will not budge.

It's the one on the gearbox end of the input shaft.

I've got a set of oil seal picks, but it just will not move.

Any suggestions as to get the thing out?

 

[DrFarkoff]

I just had to do this about a month ago It took a Bump hammer and an adapter I made up

I did the drill and self tapper method but it was so tight it jammed

The problem with the one I was working on was that the previous fitter had pushed it all the way to the end

If as it should be its about 6 or 8 mm back from the bottom end you may be able to knock it off kilter and get a pull on it then

 

[mikeyboy]

If the box is on the bench I’d remove the end cover,
That said I’d fit new bearings and all of the seals before refitting it.
60 or 70 squids in parts,peace of mind,

 

[DrFarkoff]

Normally I would have done the same but it was a favour for someone

Splitting the box is pretty average for you and I "but" somewhat daunting for the average DIY person

Unfair advantage springs to mind

 

[mikeyboy]

Normally I would have done the same but it was a favour for someone

Splitting the box is pretty average for you and I "but" somewhat daunting for the average DIY person

Unfair advantage springs to mind

True,but the 1150 box is pretty easy on the tooling and with a clymer manual it’s well within the skill set of most competent home mechanics.

 

[mikeyboy]

I'm in the process of replacing the gearbox on my 2002 R1150GS and the clutch slave bore and oil seal looked very manky.

I've cleaned all the gunk in the bore and went to get that oil seal out, but it will not budge.

It's the one on the gearbox end of the input shaft.

I've got a set of oil seal picks, but it just will not move.

Any suggestions as to get the thing out?

Pm me if you fancy a challenge,
I’ll talk you through taking the cover off.

 

[Welshman]

Sorry to Hijack, which bearings do you find fail most often, in my experience its the intermediate shaft?

 

[Steve in Kent]

Thank you for all of the replies.

The reason I am replacing the box is because my 85k miles one has started to get a noisy input bearing.

I had a chat with an ex BMW guy who said it would be cheaper for me to get a low mileage box than have him replace the bearings etc.

I bought a box with with 15k on it, and looking at the splines they are like new, so maybe the mileage is correct, (it was from a reputable BMW spares business).

The clutch slave bore looked really manky though, and I thought I might as well change the manky looking seal as well.

Ever wished you hadn't started something?

I'll take Mikeyboy up on his offer though.

I've got the Clymer, Haynes, and BMW workshop manual, and even though I am an engineer, (not a mechanic), gearboxes fill me with dread.

Is it possible to remove the rear housing leaving all of the shafts in the clutch housing by just heating up the rear housing in the bearing areas?

I assume it's best to replace all of the seals in the rear housing as it's already off.

 

[Steptoe]

i use a small flat bladed screwdriver to open up the seal at two points 180 degrees to each other, then hook in two hardened picks with 90 degree angled ends and pull the seal out... sometimes a bit of heat (hot air gun) is need to soften the seal.

 

[Steve in Kent]

Just got back from my friend.

He did what I was loathe to do.

Used a couple of wire cutters to grip the two self tapper's threads I'd screwed in, and levered on them against the housing face.

It popped straight out.

 

[Welshman]

Thank you for all of the replies.

The reason I am replacing the box is because my 85k miles one has started to get a noisy input bearing.

I had a chat with an ex BMW guy who said it would be cheaper for me to get a low mileage box than have him replace the bearings etc.

I bought a box with with 15k on it, and looking at the splines they are like new, so maybe the mileage is correct, (it was from a reputable BMW spares business).

The clutch slave bore looked really manky though, and I thought I might as well change the manky looking seal as well.

Ever wished you hadn't started something?

I'll take Mikeyboy up on his offer though.

I've got the Clymer, Haynes, and BMW workshop manual, and even though I am an engineer, (not a mechanic), gearboxes fill me with dread.

Is it possible to remove the rear housing leaving all of the shafts in the clutch housing by just heating up the rear housing in the bearing areas?

I assume it's best to replace all of the seals in the rear housing as it's already off.

I am an engineer not a mechanic, its not difficult.

 

[Steve in Kent]

I am an engineer not a mechanic, its not difficult.

It's out now, so all good.