Alternator damper ok??
#11
10-08-2010, 12:00 PM
I've read a dozen threads about the alternator damper, part #5 in this diagram: http://www.mrcycles.com/fiche_sectio...1990&fveh=3020 causing starting problems. From the diagram, I can see that the starter clutch, part #4, is also on the starter. Does that ever cause the starting problem? I see it's more expensive than the alternator damper.
If you or anyone else ever needs a good starter clutch I have one going begging - postage only.
Why is it always the most inaccessible parts that break down, eh ? 
#12
10-08-2010, 12:40 PM
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#13
10-13-2010, 06:17 AM
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Well ended up replacing damper with a used one from salvage yard.
And all is well. Now cranks normally and starts quickly. Will check,
and adjust carb sync. tonight then on to other things.
My thanks to all. With out this forum I'd still be in the , WHATS WRONG
stage instead of the IT'S FIXED stage. Also if Stuconz happens
to read this, your write up with pic's was outstanding. Your video
got me headed down the right path instead of the many wrong one's
others, including shops have taken. Brakes, tires, then test ride
Time.
Take Care
Tim
And all is well. Now cranks normally and starts quickly. Will check,
and adjust carb sync. tonight then on to other things.
My thanks to all. With out this forum I'd still be in the , WHATS WRONG
stage instead of the IT'S FIXED stage. Also if Stuconz happens
to read this, your write up with pic's was outstanding. Your video
got me headed down the right path instead of the many wrong one's
others, including shops have taken. Brakes, tires, then test ride
Time.
Take Care
Tim
#15
03-05-2011, 06:25 PM
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me too
i found stus video after spending 2 weeks checking and double checking everything coils ,carbs out cleaned and back in, starter motor rebuilt,all conector taken apart cleaned and put back,hoping it is the damper going to have it out tomorrow and have a look will order a new 1 from mr cycles cheaper than uk honda not going to risk a second hand unit ,all the best with yours 
Hey everyone, new member and I hope someone can give be some good advice. Working on a 1990 CBR1000F for my daughter's boyfriend. It has
always had a slow cranking issue and I told him I'd look at it for him.
He says he has had replaced the alternator/ Rec/ Reg and I have installed a new fully charged battery. When I finally got it started it runs great and
charging system works great. BUT that very strange noise and very slow
cranking when trying to start. Then I found this forum and STU'S video,
that's the exact noise and slow cranking I now know the problem is the
alternator damper. Only problem is now that it is out it seems to be ok.
Can not rotate the inner shaft just with my finger through the center as
suggested or when I place it back on the alternator shaft. It may rotate just
under a quarter inch then locks and will not rotate further.
I was guessing it would rotate a full 360 deg. with very little resistance.
Am I testing it correctly?
Is the quarter inch movement than locking normal function
or am I seeing a problem? Im a bit unsure to call it good because it is
exactly the same as the video.
Thanks for any suggestions
Tim
always had a slow cranking issue and I told him I'd look at it for him.
He says he has had replaced the alternator/ Rec/ Reg and I have installed a new fully charged battery. When I finally got it started it runs great and
charging system works great. BUT that very strange noise and very slow
cranking when trying to start. Then I found this forum and STU'S video,
that's the exact noise and slow cranking I now know the problem is the
alternator damper. Only problem is now that it is out it seems to be ok.
Can not rotate the inner shaft just with my finger through the center as
suggested or when I place it back on the alternator shaft. It may rotate just
under a quarter inch then locks and will not rotate further.
I was guessing it would rotate a full 360 deg. with very little resistance.
Am I testing it correctly?
Is the quarter inch movement than locking normal function
or am I seeing a problem? Im a bit unsure to call it good because it is
exactly the same as the video.
Thanks for any suggestions
Tim
#16
03-06-2011, 06:43 AM
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#17
03-06-2011, 01:14 PM
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took out the damper today took it all apart cleaned with brake cleaner and put it back in with out oiling it , engine cranked over lovely thats proved it to be the problem ,have to get a new one on order and not have to wait too long for it ? fingers crossed ,really want thisnbike up and running to go to isle of man tt this year ,the knees wont take the traveling on the zx6r unless i stop every 60 miles or so,antway hears hoping and all the best gary
#18
03-11-2011, 03:01 PM
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#19
05-21-2013, 11:01 PM
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If you've read this thread so far and have a MkI bike (87-89) then the damper is no longer available from Honda.
i am investigating the MkII damper to see if it can be used instead.
If you have a MkII bike I suggest you buy a new damper now if you plan to keep the bike because as sure as sure can be they will discontinue it.
Partzilla.com - OEM Powersports Parts from Honda, Kawasaki Polaris, Suzuki and Yamaha at discounts up to 80% off MSRP are cheapest at the moment, but watch the postage
Owen
i am investigating the MkII damper to see if it can be used instead.
If you have a MkII bike I suggest you buy a new damper now if you plan to keep the bike because as sure as sure can be they will discontinue it.
Partzilla.com - OEM Powersports Parts from Honda, Kawasaki Polaris, Suzuki and Yamaha at discounts up to 80% off MSRP are cheapest at the moment, but watch the postage
Owen
