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 Post subject: Rev counter gears part# 066792160
PostPosted: Wed Oct 05, 2011 7:13 pm 
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Joined: Tue Feb 14, 2006 12:00 am
Posts: 75
Location: Oslo Norway
model: 907 I.E.
year: 1992
Hello.

Does anybody know the number of teeth on these gears, or have them easily accessible so you could count them for me?

Have got a lead for a set but need the numbers and i have put my bike in winter storage 400kms away...

All pasos uses the same part number, (part 13 in the picture).

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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Wed Oct 05, 2011 11:22 pm 
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paso grand pooh-bah
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Location: Newzealand
model: 906 Paso
year: 1990
The #13 , as pictured on my paso has 19 teath , as does the one on my SS , dunno about the other (cam ) gear

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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Thu Oct 06, 2011 2:22 am 
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paso grand pooh-bah
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Joined: Tue Jul 29, 2008 9:50 pm
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Location: Hilltown,Pennsylvania
model: 906 Paso
year: 1990
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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Thu Oct 06, 2011 6:45 am 
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Joined: Tue Feb 14, 2006 12:00 am
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Location: Oslo Norway
model: 907 I.E.
year: 1992
Thanks!!! saved me for a long travel. :thumbup:


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Fri Apr 27, 2012 6:50 pm 
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Joined: Tue Feb 14, 2006 12:00 am
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Location: Oslo Norway
model: 907 I.E.
year: 1992
Hello.

Bringing back this old topic, I am finally ready to fit the replacement gears and are surprised how loose the fit is on the camshaft,
you can easily slip it on and off with your fingers.
I thought this was supposed to be a press fit and are worried that it might be slipping on the shaft, but both the old and new gears are the same fit, Is this how it is supposed to be?

Håvard


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Fri Apr 27, 2012 9:35 pm 
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Joined: Thu Apr 03, 2008 4:38 pm
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Location: Boston, MA
model: 907 I.E.
year: 1993
h1a wrote:
Hello.

Bringing back this old topic, I am finally ready to fit the replacement gears and are surprised how loose the fit is on the camshaft,
you can easily slip it on and off with your fingers.
I thought this was supposed to be a press fit and are worried that it might be slipping on the shaft, but both the old and new gears are the same fit, Is this how it is supposed to be?

Håvard


Don't worry, it gets clamped up tight when you tighten the timing pulley nut.

Sam


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Sun Apr 29, 2012 4:48 pm 
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Joined: Tue Feb 14, 2006 12:00 am
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Location: Oslo Norway
model: 907 I.E.
year: 1992
Thanks :thumbup:
It is back together now and working as you said.


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Mon Oct 05, 2015 1:33 am 
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Joined: Thu Jun 11, 2015 7:31 am
Posts: 21
Location: USA
model: 907 I.E.
year: 1993
HI , My REVOLUTION COUNTER GEARS are not spinning when the engine is running .... Where can i find a Replacement ?

Also does anyone Know what other bikes Use the same set Up ? and what other Model of Bikes Are compatible...?


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Mon Oct 05, 2015 5:16 am 
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paso grand pooh-bah
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Location: Newzealand
model: 906 Paso
year: 1990
H20doctor wrote:
HI , My REVOLUTION COUNTER GEARS are not spinning when the engine is running .... ?

:D is your timing pulley nut tight :) .....no shit! my rear cylinder cam pulley nut was loose when I got the bike , sworth a look. :)

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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Mon Oct 05, 2015 8:49 am 
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paso grand pooh-bah
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Location: Scotland
model: 907 I.E.
year: 1994
H20doctor wrote:
HI , My REVOLUTION COUNTER GEARS are not spinning when the engine is running .... Where can i find a Replacement ?

Also does anyone Know what other bikes Use the same set Up ? and what other Model of Bikes Are compatible...?


The carbed 750SS and 900SS use the same revcounter drive, but do what McTool suggests and check that timing pulley nut first.

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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Mon Oct 05, 2015 4:46 pm 
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Location: USA
model: 907 I.E.
year: 1993
Where is this timing pully nut located


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Mon Oct 05, 2015 11:28 pm 
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paso grand pooh-bah
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Location: Newzealand
model: 906 Paso
year: 1990
on the timing pulley :D If you remove the belt cover off the front (horizontal ) cylinder you will be able to see the cam belt goes around a pulley ( about 50mm dia ) , this is the cam pulley for that cylinder and there is a nut in the middle that not only attaches the cam pulley to the cam shaft ( with a key ) but when done up it clamps the tacho drive gear to the camshaft ( inside the motor ) . If tis nut is loose its possible that the camshaft wont drive that gear ( cam spins as usual but the gear , not being clamped to the shaft , does not spin at all or very slowly ). If it is loose I would want to check the condition of the keyway in the cam pulley , the shaft , and the key itself . Mine had flogged out all 3 and I had to get real sneaky to fix it without needing a 2nd mortgage . Giving the pulley a wiggle to see if its loose wont cut it , the best way for you would be to simply re-torque the nut correctly , and if you are able to further tighten that nut much more than 1/2 a flat Id assume it was loose ( check the keyways ).
I really believe that the reason my nut was loose was because the last owner left it loose , I met him at a rally and he wanked on about all the stuff he had done to the bike and, as time went by I began to realise the list of things he had "fixed " was pretty much the same as the list of things I had discovered that had been butchered ...............yeah , he was the original "penis fingers "

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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Tue Oct 06, 2015 12:14 am 
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Joined: Thu Jun 11, 2015 7:31 am
Posts: 21
Location: USA
model: 907 I.E.
year: 1993
Mc tool wrote:
on the timing pulley :D If you remove the belt cover off the front (horizontal ) cylinder you will be able to see the cam belt goes around a pulley ( about 50mm dia ) , this is the cam pulley for that cylinder and there is a nut in the middle that not only attaches the cam pulley to the cam shaft ( with a key ) but when done up it clamps the tacho drive gear to the camshaft ( inside the motor ) . If tis nut is loose its possible that the camshaft wont drive that gear ( cam spins as usual but the gear , not being clamped to the shaft , does not spin at all or very slowly ). If it is loose I would want to check the condition of the keyway in the cam pulley , the shaft , and the key itself . Mine had flogged out all 3 and I had to get real sneaky to fix it without needing a 2nd mortgage . Giving the pulley a wiggle to see if its loose wont cut it , the best way for you would be to simply re-torque the nut correctly , and if you are able to further tighten that nut much more than 1/2 a flat Id assume it was loose ( check the keyways ).
I really believe that the reason my nut was loose was because the last owner left it loose , I met him at a rally and he wanked on about all the stuff he had done to the bike and, as time went by I began to realise the list of things he had "fixed " was pretty much the same as the list of things I had discovered that had been butchered ...............yeah , he was the original "penis fingers "



ok , does anyone have an Image or schematic of the operation i am going to attempt, or is it the same image in post # !

thank you for your help


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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Tue Oct 06, 2015 5:17 am 
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paso grand pooh-bah
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Joined: Wed Dec 05, 2007 12:35 am
Posts: 1668
Location: Newzealand
model: 906 Paso
year: 1990
If you google something like "Ducati adjustable cam pulley " you'll probly get a vid showing how to adjust cam timing with adjustable pulleys , don't worry about the adjustable bit , the vid should show how to remove and replace the pulley and nut. To be honest , I get the feeling that your not that mechanical , and there are disasters ahead for the unwary .... like bent valves . Unless you really do have your head around the whole cam timing / piston to valve clearance thing I wouldn't recommend you get into it to much . Just take the cover off and give that nut a tweek as I say above :)

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 Post subject: Re: Rev counter gears part# 066792160
PostPosted: Wed Oct 07, 2015 7:26 am 
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Joined: Thu Jun 11, 2015 7:31 am
Posts: 21
Location: USA
model: 907 I.E.
year: 1993
im mechanically inclined , i changed both belts on the bike back in May ... rebuilt the clutch , and switched out the Master clutch reservoir , handle , clutch piston ...etc..etc..etc ...
So i pulled the cover off today , looked at the front Cam , and Nut... it on there dam tight ... so I think i need to remove it from the top of the engine , where it has the one metric bolt holding it down... Most likely , the splines or gears are either broke, or stripped ... fig # 13 Above ....


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