GS100PD clutch slip / adjustment

[Captain Black]

Been out for a ride tonight on my GS 100 PD, not sure if it makes a difference but its an 89 MY with the kick starter.

When I'm in 4th or 5 th on A roads 60/70 mph ( ish )

I pull the throttle back to the stop and I'm sure its slipping higher up the rev range at about 5K rpm. The clutch lever seems to engage on release near the end of its travel but setting off, stopping , idle at a stop all seem ok. I noticed also the engine seems less noisy lever pulled in, then its more ( how do you describe noises !) rumbles / knocks ?

Is it like the Ducati dry clutch and perfectly normal ?

Question is can I adjust ( done search but nothing is coming back ) and how tricky is it to do ? Or am I looking at maybe a new clutch ?

Bike has 26k KM on I assume its maybe original as the bikes in nice order.
Maybe just ride it but don't nail the throttle ? Am I abusing the clutch doing that ?

 

[B Murr]

So all is well except for when at 5k rpm which will be a time that loads of torque going in and lots of wind resistance etc. I'd be guessing a bit of grease or oil on the clutch plate.

 

[solidstate100]

With the lever pulled in the gearbox layshaft stops spinning, hence the reduction in noise (which is a deepish metallic chukka - chukka - chukka at idle). Normal. Imbalance between the cylinders can make this worse. Might be worth just checking oil level and condition for piece of mind.

Irrespective of the adjustment and take up point, if there is free play at the lever and clutch actuating arm, there should be no slip, and yes if you continue to ride it with it slipping you will hasten its demise.

Could be oil contamination, or it could be worn out, or, if there is no free play, could be adjustment.

You sure it hasnt done 126,000 km?

 

[DrFarkoff]

Have you any free play in the cable?

 

[Kenny]

Clutch actuating arm should be 202mm ( plus or minus 1mm ) from gearbox mounting lug. Set this then 3mm play. If still slipping, probably clutch goosed !

 

[Captain Black]

Thanks for the replies.

I can't confirm the milage as its a German import ( BAMW) but its in good original nick so I'd say not 126 k km. certainly doesn't look a high miler, unless its had a a clock change, I'll pop in the garage later and check the cable adjustment and report back .

I'm guessing a major job if the clutch is goosed ?Any good specialists in the north west anyone ?

I kinda thought the noise was ok a bit like a Ducati 748 noise bout not as bad.

Yep all is well until the 5k mark and you start laying the torque down I assume ?

 

[chrisshrops]

It sounds like grease or oil in the plates or just worn plates anyway itIs an easy job to change them .
I did mine the other week it takes a couple of hours ,motobins or works had the oil proof siebenrock plate on special offer

 

[Captain Black]

It sounds like grease or oil in the plates or just worn plates anyway itIs an easy job to change them .
I did mine the other week it takes a couple of hours ,motobins or works had the oil proof siebenrock plate on special offer

Thanks I'll try the adjust first. Need to do it in daylight hours but at footy tmrw with a bloody 12.45 KO, cuts the day in half.

It looks a big job to me ! I'm up for maintenance / minor repairs improvements but don't fancy pulling the back of my bike off, locking cams etc etc etc.

I'll try find local ish specialist if needed Steptoe , Mikeyboy are far far away !

 

[DrFarkoff]

Just screw the knurled adjuster screw in a bit so that you have at least 2mm of freeplay at the lever

And then go for a run it'll will save you panicing about measurements and phaffing around on your hands and knees

Adjust and go test drive it! If it doesn't slip = the clutch cable was too tight

 

[Captain Black]

Just screw the knurled adjuster screw in a bit so that you have at least 2mm of freeplay at the lever

And then go for a run it'll will save you panicing about measurements and phaffing around on your hands and knees

Adjust and go test drive it! If it doesn't slip = the clutch cable was too tight

Well checked the free play at the bar and its at about 5mm, I'd doubt I could let anymore out as the lower 201 mm adjustment seems fine .

I don't want to ride it for fear of making it worse

 

[Captain Black]

Clutch actuating arm should be 202mm ( plus or minus 1mm ) from gearbox mounting lug. Set this then 3mm play. If still slipping, probably clutch goosed !

Did that Kenny from the lug to the arm ( ie where the nipple meets the arm in its recess is bob on at 201 mm .

That's with my accurately cut to lengh ( 201 mm ) new wooden meat skewer

 

[solidstate100]

Well checked the free play at the bar and its at about 5mm, I'd doubt I could let anymore out as the lower 201 mm adjustment seems fine .

I don't want to ride it for fear of making it worse

Looks like you might be having that box out then........its not as bad as you thiink, honest!

 

[Captain Black]

Looks like you might be having that box out then........its not as bad as you thiink, honest!

Hmmm well if it needs to come out it needs to come out. Does the back of the bike need to come off like the GS 1150.
Is it a two hour job for a pro and an 8 hour job for a novice ? Who the nearest specialist to Manc Land on here ? Would it be ok to ride if I nursed the revs ? And is it a ride in ride out ( ie I'd have to wait ) same day jobby ? Is it plates or other stuff as well so what do I purchase in way of parts or is it wait and see until its in bits ? Needless to say the local stealership is out of the question.

 

[chrisshrops]

https://m.youtube.com/watch?v=uVKPGcf0xag

Follow this on you tube and bobs your aunty

 

[Captain Black]

https://m.youtube.com/watch?v=uVKPGcf0xag

Follow this on you tube and bobs your aunty

Thanks I'll take a look later, but can't say I feel like crawling around on my hands and knees for hours .

 

[DrFarkoff]

I cannot watch that American loudmouth Clampet any more

Basically If you are not confident find an independent

There's not that Much to do Its just remembering what to do in the sequence and how to fit it all back together again

 

[Captain Black]

Watched that film and I can do that!

However ! My problem is inside garage space and the fact I don't have a lift , the days of me crawling around on the floor for long periods are gone .

He mentioned in the film 8 " ( 203.5 mm ) to the centre of the cable nipple in the actuator arm, now I'm 201mm to the arm recess where the nipple seats , in other words not to the nipple at all in my case. Can these small increments make a difference ? And do I still have room for minor adjustments ? Would it make a difference ?

I see they sell the " line up " tool at motor works , wonder if the flywheel lock is available ?

I'd have a go if I had the space but I don't unless I leave my poor old car outside ..

I'm also thinking I don't know why it's goosed, if indeed it is. If oil has leaked on the plates where does this job lead regarding replacing any seals ?

On first search I can't see any local " independents " I'll keep looking . I'll speak with motor works re parts I may need etc.

 

[chrisshrops]

Oil may be be grease from the spline lube if someone was keen ,and you don't need to lock your flywheel as you are not taking it of ,I don't think the slip will be the cable mate

 

[solidstate100]

Dont get too twisted up about minor incremental differences. The fact is, if you have free play, you shouldnt have slip. The clutch alignement tool is worthwhile, but you dont nessecaritly need the flywheel locking tool IME, a well placed tyre lever or large screwdriver blade can work (that said its still a nice tool to have).

Either way if the clutch is worn out or oll contaminated it going to have to be replaced. If there is oil then either the oil pump cover gasket, crank main seal, or gearbox input seal will need attention (or it could be an excess of input spline lube maybe), all are doable, and while you have the box out may be worth doing, as is the input spline lubrication, for peace of mind.

 

[Captain Black]

It sounds like grease or oil in the plates or just worn plates anyway itIs an easy job to change them .
I did mine the other week it takes a couple of hours ,motobins or works had the oil proof siebenrock plate on special offer

Ok think I'll have a crack at this next weekend.,
Looked on motobins and they have the heavy duty /oil proof friction pâté at about 100 gbp is that the one ?

What else do I need .....diaphragm spring ?

Is there a special lube for the splines ?

I thought buy the lining up tool for re fitment

New clutch retention bolts as these are torqued , same with drive shaft bolts

I'd like to have everything before I start next weekend

Guess if I hit snags I can just reinstall the swing arm pivots so at least I can move the bike around to allow me access to my other crap.