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Johnnie
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Post subject: 88 limited gearbox final drive noise????? Posted: Sun Apr 26, 2009 7:56 pm |
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my limited has been giving me fits for awhile. symptoms as follows squeky noise at road speed (final drive output shaft speed???) it will make the noise with the clutch out but it gets worse when you hold the clutch in, I can repeat the noise on the center stand while I am right next to it and it sounds like its coming from the rear of the engine possibly from the final drive output shaft area but not 100 percent sure, its pretty loud, very annoying and gotta be leading to worse things down the road. any ideas????? John
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Brutus
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Sun Apr 26, 2009 8:33 pm |
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Joined: Sun Jan 16, 2005 12:00 am Posts: 257 Location: The Netherlands
model: 750 Paso
year: 1989
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In recent posts I've mentioned the bronze bushing in the gearbox. It's in the second gear just next where the front sprocket is fitted. If this is the case, driving on can cause damage to the second gear. You should have noticed this while shifting gear (less smooth).
cheers! Léon
_________________ _________________ Better too late than too ugly..
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Johnnie
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Mon Apr 27, 2009 3:09 pm |
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I havent experienced any problems shifting, just the noises. It sure sounds internal and unfortunatley I dont have the time or money to dive into this kind of a project, If I cant find a magic wand for this one the duck may have to go John
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jcslocum
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Mon Apr 27, 2009 8:51 pm |
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paso grand pooh-bah |
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Joined: Mon Jul 19, 2004 12:00 am Posts: 1714 Location: Eastern Shore, MD
model: 750 Paso
year: 1988
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So, with the bike in gear, the rear brake on (wheel not turning) AND the clutch in, you get this noise??
Pull the clutch cover and look at the button and bearing.
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Johnnie
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Wed Apr 29, 2009 6:46 am |
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yes Im pretty sure it does although I cant remember if I tried that specifically. I recently installed a new clutch and everything seemed alright. I will open the clutch back up and check thinkgs out again. if I dont see anything obvious I will probably take it to one of the local ducati shops and see if they can bless or condemn my baby
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Mc tool
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Thu Apr 30, 2009 8:52 pm |
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paso grand pooh-bah |
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Joined: Wed Dec 05, 2007 12:35 am Posts: 1793 Location: Newzealand
model: 906 Paso
year: 1990
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_________________ I wish I was young again............Id be heaps smarter than last time
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Johnnie
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Sat May 02, 2009 4:54 pm |
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OK its saturday morning and I pulled the Duck out of the garage for further trouble shooting. I opened up the clutch cover..... the button seems OK when I turn it it turns freely but it does feel a little gravely (if thats a real word) now when I put it back together and run it in gear it makes a little noise with the clutch out and a lot more noise with the clutch in..... if I put on the rear brake at this point to stop the rear wheel the noise stops. with body work off and my head down by the spinning parts it really sounds like its coming from the clutch, my next question is should the throwout bearing be glass smooth? it turns freely but also feels a little rough. At least I'm feeling more like this might be fixable and affordable.. thanks for all the help so far John
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jcslocum
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Sat May 02, 2009 11:38 pm |
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paso grand pooh-bah |
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Joined: Mon Jul 19, 2004 12:00 am Posts: 1714 Location: Eastern Shore, MD
model: 750 Paso
year: 1988
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Thge bearing should be smooth as glass. No gravel or rough feeling to it at all. The button spins in it at engine spped so it can make plenty of noise. There should be info in the FAQ about the bearing (rollerskate) and seal. Not a hard fix at all. You definately want to get it fixed becasue the button is unobtanium.
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Johnnie
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Tue May 05, 2009 4:01 am |
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I got the bearing coming but cant quite figure out the seal, do you have that p.n. handy. also I assume to remove I just remove the clutch cover and start pumping the clutch intil it all pops out of the cover???? John
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Desmo_Demon
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Fri May 08, 2009 1:12 pm |
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paso grand pooh-bah |
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Joined: Fri Jul 21, 2006 12:00 am Posts: 869 Location: Easley, SC
model: 750 Paso
year: 1987
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_________________ 2002 Ducati 748 monoposto 1998 Ducati ST2 1996 Suzuki GSXR-1100 1994 Bimota DB2 1988 MegaPaso 916 project 1987 Ducati Paso 750 1985 Harley FXEF 2001 Ducati M900ie (wife's) 2000 Yamaha YZF-R1 (wife's) 1998 Ducati ST2 (wife's) 1994 Suzuki GSX-750R (wife's)
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jcslocum
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Fri May 08, 2009 6:43 pm |
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paso grand pooh-bah |
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Joined: Mon Jul 19, 2004 12:00 am Posts: 1714 Location: Eastern Shore, MD
model: 750 Paso
year: 1988
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Info on the seal: viewtopic.php?t=676It's better to fix the slave before the pin is shot than find a place to make it.....
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Johnnie
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Sat May 09, 2009 7:33 pm |
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now for the 64K question I have everything apart to install the new bearing but........ how does the button come out of the bearing????? the bearing is pressed into the piston and it appears the button is pressed into the bearing, I cant see a way of getting the button off without damaging it. Is it possible that the button is just stuck from being in there so long???? should I soak it in something or just pry on it a little harder????? I know from previous postings that the button should be treated like a god....... any ideas????
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jcslocum
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Post subject: Re: 88 limited gearbox final drive noise????? Posted: Sat May 09, 2009 10:08 pm |
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paso grand pooh-bah |
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Joined: Mon Jul 19, 2004 12:00 am Posts: 1714 Location: Eastern Shore, MD
model: 750 Paso
year: 1988
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It's a slight interference fit. Use some lube and just work it out.
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