BMW Luxury Touring Community banner

1 - 7 of 7 Posts

·
Registered
Joined
·
493 Posts
Discussion Starter #1
Well I think my slave cylinder is giving up! Started to back out of my barn clutch pulled in 1st gear, Backed up a couple of feet and the thing started to start back forward? Got out (of the barn)and pull the clutch in when in gear and every thing see to be fine? 'Bout half way out the drive pull the clutch and it did not release? Check fluid and it seems to be OK. Got ideas.
 

·
Registered
Joined
·
12,165 Posts
bulletbill said:
Well I think my slave cylinder is giving up! Started to back out of my barn clutch pulled in 1st gear, Backed up a couple of feet and the thing started to start back forward? Got out (of the barn)and pull the clutch in when in gear and every thing see to be fine? 'Bout half way out the drive pull the clutch and it did not release? Check fluid and it seems to be OK. Got ideas.
Unfortunately, I think you already figured out the answer.

Now if you had drilled that drain hole we keep talking about, you would only be in for a slave replacement, not the clutch too.;)
 

·
Registered
Joined
·
714 Posts
Mine behaved that way after I replaced the slave cylinder and I didn't have enough fluid in the reservoir.

My guess is that the slave cylinder is leaking or the lower clutch cable is leaking since we saw corrosion on most of those when we did the weep hole drilling. Either way you need to rip the back end off and find out. Drill the hole while you are there. If your lucky you haven't contaminated the clutch yet but I wouldn't ride until it is fixed.

Good Luck,
Kevin
 

·
Premium Member
Joined
·
3,549 Posts
Anyone come up with a bracket to attach to the clutch housing so that this hole can be drilled without dismantling everything?

Bob
 

·
IBR# 366
Joined
·
16,545 Posts
Not possible. Basically, you have to get the slave cylinder out of the way before drilling the hole. And besides, the whole point is to avoid unnecessary labor by having to do the whole clutch later.
 

·
Registered
Joined
·
188 Posts
BecketMa,
If you look at the gross of uploaded images of the clutch slave know that only about .5 mm or .020" of freespace surrounds the removable slave and its containing cast void or hole. At business end (clutch actuating push rod) there is about 2-3 mm. So the total free volume inside that area is not large. I had less than 10 ml (2 teaspoons) and it coated the whole circumference of the slave cylinder. If you drill at 30mm from the face of the boss some of your new drain hole is covered by the slave but it does have .020" free for drainage which is entirely adequate. Now if you drill without all the R/R (swingarm) you will probably dent or worse drill into the external barrel of the slave housing. It is thick but all the chips will go flying and you know that ThrowOut Bearing is right there and so is the seal and bearing at the far wall of the hole. If you don't have a leaking clutch slave or pushrod seal/ bearing leak you will have...... since there are a lot of sharp shavings thrown around by the 5/16 drill bit and every time you pull that clutch handle that slave piston moves and the throwout bearing spins and on and on. I vacuumed mine clear. Also, I beleive these brake fluid seapages are slow but with no where to go the 15 ml of free space can be taken up and along the clutch rod it goes. The seal there is set to keep GL in and the Designers figured the slave seal would never leak :eek: !!!
 

Attachments

·
Registered
Joined
·
493 Posts
Discussion Starter #7
Thanks

I appreciate all the response. I'm setting still and waiting on parts. My prayer is that I have caught this when it happen and it has not contaminated the clutch. Thanks again for the reply both online and off.

This is the first time in 30 years that I don't have something to ride so I am going through some withdrawal, but I'll make it through. Just pray for me
 
1 - 7 of 7 Posts
Top