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Hot Topic (More than 10 Replies) Bolts for clutch removal tool (Read 1714 times)
Soeren
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Bolts for clutch removal tool
01/30/19 at 16:18:30
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Im about to remove my clutch as I have (most likely) a leaking main seal.

I need some bolts and nuts for a clutch removal/release tool, but Im getting a little confused about the bolt size.
Some say M8x50 with 1.25 pitch, others say M8x50 with 1.0 pitch, but the stretch bolt I took form my clutch is M7.

Whats up with that? What bolt size do I need for let down bolts, on a 1983 R65?
  

'83 BMW R65
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Bob_Roller
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Re: Bolts for clutch removal tool
Reply #1 - 01/30/19 at 16:25:26
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I just checked the bolts that I have, they measure at 7 mm diameter .
Can't access my tap and die set, so i can't give you a thread pitch .
  

'81 R65
'82 R65 LS  
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
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John M
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Re: Bolts for clutch removal tool
Reply #2 - 01/30/19 at 18:11:58
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you do not need the bolts to release the clutch pressure plate on that year, they are only needed on the original heavy flywheel bikes.
  

1984 R 80 ST ,  1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7
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Tony Smith
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Re: Bolts for clutch removal tool
Reply #3 - 01/30/19 at 18:58:33
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John M wrote on 01/30/19 at 18:11:58:
you do not need the bolts to release the clutch pressure plate on that year, they are only needed on the original heavy flywheel bikes.


I was wondering if he had a pre or post 1981 bike.
  

1978 R100RS| 1984 R65 | 1992 KLE500 | 2002 R1150GSA
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Soeren
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Re: Bolts for clutch removal tool
Reply #4 - 01/31/19 at 01:28:32
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So I can just criss cross loosen the 6 bolts, without the clutch blowing up in my face?
  

'83 BMW R65
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Tony Smith
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Re: Bolts for clutch removal tool
Reply #5 - 01/31/19 at 05:30:38
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Soeren wrote on 01/31/19 at 01:28:32:
So I can just criss cross loosen the 6 bolts, without the clutch blowing up in my face?


If it is the later "clutch carrier" type rather than the older "heavy flywheel' type - Yep, you sure can.

A tip, the components of the clutch "pack" are all individually balanced and at the factory the components were matched up. A daub of white paint was applied by the factory to record how each "pack" went together.

That white paint will most likely have disappeared by now, do yourself a huge favour and mark the components before disassemble so that you can put it back together  the same way.
  

1978 R100RS| 1984 R65 | 1992 KLE500 | 2002 R1150GSA
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georgesgiralt
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Re: Bolts for clutch removal tool
Reply #6 - 01/31/19 at 07:15:57
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And if you intent to clean the clutch with some solvent, use a scribe instead of white paint....
Do ask how I know ....
  
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John M
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Re: Bolts for clutch removal tool
Reply #7 - 01/31/19 at 14:09:53
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do you have the required tools to pull the rear seal and the tool to fit the new seal. take note of the depth of the old seal before you pull it out , a slide hammer can assist in removing the old seal. they can be a little stubborn to get out and it is important to not mark the surrounding metal as it could effect the quality of the crank sealing.  Good advice given re noting the paint marks on clutch and ring gear components, they have best balance if the paint marks are duly noted and reinstalled in the same configuration.   Good Luck  it is not a particularly difficult job but requires care at every step  ...  ___Make sure you block the crank from shifting forward before starting any of the removals ___!!!!!!!
  

1984 R 80 ST ,  1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7
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Tony Smith
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Re: Bolts for clutch removal tool
Reply #8 - 01/31/19 at 16:53:30
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georgesgiralt wrote on 01/31/19 at 07:15:57:
And if you intent to clean the clutch with some solvent, use a scribe instead of white paint....
Do ask how I know ....


Yeah, me too - not my smartest moment deciding to spray them down with brake cleaner. Fortunately was able to discern just enough paint remaining to work it out - now marked by centrepunch.
  

1978 R100RS| 1984 R65 | 1992 KLE500 | 2002 R1150GSA
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Tony Smith
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Re: Bolts for clutch removal tool
Reply #9 - 01/31/19 at 17:03:06
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John M wrote on 01/31/19 at 14:09:53:
do you have the required tools to pull the rear seal and the tool to fit the new seal. take note of the depth of the old seal before you pull it out , a slide hammer can assist in removing the old seal. they can be a little stubborn to get out and it is important to not mark the surrounding metal as it could effect the quality of the crank sealing.  Good advice given re noting the paint marks on clutch and ring gear components, they have best balance if the paint marks are duly noted and reinstalled in the same configuration.   Good Luck  it is not a particularly difficult job but requires care at every step  ...  ___Make sure you block the crank from shifting forward before starting any of the removals ___!!!!!!!


Yes absolutely to blocking the crank, on my shelf is an R100 engine that the person who worked on it did not block the crank. They also failed to notice that the engine was a bit tight and they managed to start it. The results are tragic.

The easiest way to get the rear seal out is to screw some "tek screws" (also known as self tapping screws) and then use a claw hammer and big screwdriver to leaver out the old seal. With the new seal and a late model engine there is no need to measure the installed depth of the rear main seal - but you really should use the correct tool to drive it home.

If you take the flywheel off, open the oil pump and inspect the gears as a matter of course, new o-ring of course.

Last thing you may need to know. You have taken out the flywheel bolts and removed the flywheel. You now face that strange little inner device that mounts onto the end of the crank. It needs to come out so you can get the main seal (and it will need a new o-ring too) but the means of getting the little bugger out are not immediately clear. Courtesy of it being soaked constantly in oil it will strongly resist simply being pulled off - use a screw driver and light hammer on the edge of one of the holes the bolts go through and tap it around in a circle - half a turn is usually enough to break the suction and it will pull off easily.

Because there is a small possibility that you will raise an edge when you used the screw driver - use a stone to ensure the area around the bolt holes is perfectly flat.
  

1978 R100RS| 1984 R65 | 1992 KLE500 | 2002 R1150GSA
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Soeren
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Re: Bolts for clutch removal tool
Reply #10 - 02/01/19 at 15:27:18
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Thanks guys, Im soaking up every bit of information. Tommorow I am going to cut down a 6mm allen wrench and make a piece that can push agains the front engine cover and keep the crank from shifting forward.
  

'83 BMW R65
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John M
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Re: Bolts for clutch removal tool
Reply #11 - 02/01/19 at 18:01:41
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Sounds good.
  

1984 R 80 ST ,  1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7
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John M
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Re: Bolts for clutch removal tool
Reply #12 - 02/01/19 at 18:02:29
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Sounds good.
  

1984 R 80 ST ,  1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7
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Soeren
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Re: Bolts for clutch removal tool
Reply #13 - 02/02/19 at 13:58:55
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When I removed the transmission I noticed a smalle rubber ring and a spring seal tangled together next to where the clutch control enters the transmission.

I tryed to identify it in the realoem parts fiche, but can't find it.



What is it, and has more of it dropped into the transmission?
  

'83 BMW R65
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John M
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Re: Bolts for clutch removal tool
Reply #14 - 02/02/19 at 14:33:47
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Those are remnants of the clutch pushed oil seal . It can not have entered the transmission as the pushed runs thru the transmission in a hollow shaft..  No worries ,just purchase a new pushed oil seal.
There should be more of that seal still in the back transmission casting.
  

1984 R 80 ST ,  1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7
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