Author Topic: Clutch ???  (Read 5892 times)

Offline Coppertop1234

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Clutch ???
« on: September 29, 2015, 04:51:09 PM »
Just been on a lovely ride out on the F1 Nice sunny day apart from the adolescent teenage on the back of the school bus.

Thought I heard a slight ringing sound and bike was a little less responsive.Just got into the driveway and the ringing became a clattering from the clutch.

Yup definitely the clutch pull in the lever and what a rattle.
Checked all cables they are fine, can't adjust to solve the issue.

Never changed one before on a bike, is it easy enough ? Do I need any special tools?

Hints /Tips / Advice appreciated.

Cheers

Keith Senior
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton Commando
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline Johnwebley

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Re: Clutch ???
« Reply #1 on: September 29, 2015, 06:12:59 PM »
firstly,you say the bike is running not as good as before?

 it maybe clutch rattle because one or more cylinders are running rough,

does the noise lessen if you put it in gear?

 has the tickover speed altered?  slower ?


lifelong motorcycle rider,and fan

Offline Coppertop1234

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Re: Clutch ???
« Reply #2 on: September 29, 2015, 06:28:19 PM »
Cheers for comments, but definitely not clutch rattle
Bike was dragging a bit nothing much
When I got into drive and pulled in the clutch it sounded like a can of marbles and when trying to select a gear it wouldn't select only grind as if I had no clutch bite at all.

Cheers

Keith Snr

I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton Commando
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline Johnwebley

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Re: Clutch ???
« Reply #3 on: September 29, 2015, 06:41:18 PM »
suggest you remove the clutch cover,and check the clutch basket,springs .and center,


 do you have a manual?

 its not a difficult job,
lifelong motorcycle rider,and fan

Offline Coppertop1234

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Re: Clutch ???
« Reply #4 on: September 29, 2015, 07:48:11 PM »
Thanks John

I will strip at weekend and have a better look
Yes I have manual  - just watched hackaweek on you tube and it looks straight forward -apart from the tool thats required  (I had better order one)
I think it will be the clutch release lever rather than the clutch plates - unsure where i will source one of these at moment can't see anything on DSS site
« Last Edit: September 29, 2015, 08:01:09 PM by Coppertop1234 »
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton Commando
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline Chris400F

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Re: Clutch ???
« Reply #5 on: September 29, 2015, 09:40:31 PM »
... unsure where i will source one of these at moment can't see anything on DSS site
If you have a Parts List try searching for the part on DS by number.
I have known parts where the part is common to multiple models and isn't listed on the model page but comes up when you search by number.
If it still doesn't show then Google the P/N.

Offline Coppertop1234

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Re: Clutch ???
« Reply #6 on: September 30, 2015, 06:15:10 AM »
I would think it will be the clutch lifter plate bearing that has collapsed

New springs and bearing on order
« Last Edit: October 05, 2015, 02:50:41 PM by Coppertop1234 »
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton Commando
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration

Offline Coppertop1234

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Clutch - Not Torqued up
« Reply #7 on: October 05, 2015, 02:49:57 PM »
Split clutch today after ordering new parts inc heavy duty springs, so I could rebuild,only to find the clutch was not the issue.

It was the last person who worked on the clutch 25 years ago,obviously they didn't have a torque wrench as the bearing carrier had drifted loose.

No wonder it sounded like a can of marbles.







The retaining nut was loose and not locked with the lock tab



Well while i was in I replaced the bearing and seals,checked friction pads,which were fine
Torqued retaining bolt to 34lb and locked with tab
Replaced damaged bolts & torqued to 9lb
Rebuilt and all is as should be

Glad the bolts drifted out while pottering about at home and not on a run to coast

« Last Edit: October 05, 2015, 02:51:54 PM by Coppertop1234 »
I Love Tinkering with Old Classics
1970 Mobylette 50cc  
1972 Honda Cb175
1974 Yamaha Rd250  
1962 Triumph 650 Bonneville
1972 Norton Commando
1978 Honda CB400/4
1976 CB750F1 
1976 Suzuki GT750 Kettle
1978 Honda CB 750 F1 
Married Life No Bikes for a while then
1975 CB Honda 400/4 Restoration
1976 Kawasaki Z650   Restoration
2002 Suzuki GSX1400
1976 Honda cb750F1  Restoration
1978 Honda cb750 F1 Restoration
1977 CB 250 Dream    Restoration
1977 CB400/4  - The last one - Restoration