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 Post subject: Belt renewal /correct part number for late 906?
PostPosted: Sat Jul 09, 2016 8:28 pm 
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Joined: Tue Jan 16, 2007 12:00 am
Posts: 113
Location: UK
model: 906 Paso
year: 1991
Hi, back on this forum after a few years, its been off the road since 2012 (mileage 10000miles) and am keen to get my Paso up and running for summer..made a start on changing my belts...have bought Part number 73710011A, they have rounded teeth, so have belts I have removed...is this the correct part for my bike??? To aid fitting the tight new belts, have tried to remove the guide pullies (2 flats for 10mm spanner) they won't budge any tips to remove them?


Last edited by ducatipete on Sun Jul 17, 2016 8:39 am, edited 1 time in total.

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 Post subject: Re: Belt Part Number for late 906?
PostPosted: Sun Jul 10, 2016 9:20 am 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 538
Location: Scotland
model: 907 I.E.
year: 1994
The 906 uses the same round toothed belts as the 900SS, M900 and ST2. The current part no. is 73710081A which replaces part no. 73710011A. As far as I can tell the only difference is the price, which is nearly double :mad:

It sound like you are trying to remove the fixed tensioner guide. These are loctited in and should not be removed unless worn out. Removing the movable tensioners should give you plenty of clearance to fit the belts. You can then slip them back in after the belts are fitted before tensioning.
If your engine has flanges on the cam pullies you can pull them off with a pair of pliers and throw them away. It makes changing the belts far easier and the belts will stay in place due to the flanges on the bottom pullies. Later 2V engines didn't have flanged cam pullies.

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2017 Supersport 939
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1982 Pantah 500SL


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 Post subject: Re: Belt Part Number for late 906?
PostPosted: Sun Jul 10, 2016 11:09 am 
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Joined: Tue Jan 16, 2007 12:00 am
Posts: 113
Location: UK
model: 906 Paso
year: 1991
Many thanks, just checked the profile of the pullies and are rounded....will look at removing those dam flanges!!!


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 Post subject: Re: Belt Part Number for late 906?
PostPosted: Sun Jul 10, 2016 3:17 pm 
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Joined: Tue Jan 16, 2007 12:00 am
Posts: 113
Location: UK
model: 906 Paso
year: 1991
Got the vertical belt on (flange still on) after warming belt in hot tap water and liquid soap...but finding the other belt harder to do...will have a break and try again..may look at removing the drive pulley...do I need a new nut???


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 Post subject: Re: Belt Part Number for late 906?
PostPosted: Mon Jul 11, 2016 9:04 am 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 538
Location: Scotland
model: 907 I.E.
year: 1994
You shouldn't need to take any pullies off, and yes, the nut should be replaced every time.

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1994 907ie
2017 Supersport 939
2015 Scrambler Classic
1982 Pantah 500SL


Scotland


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 Post subject: Re: Belt Part Number for late 906?
PostPosted: Tue Jul 12, 2016 7:31 pm 
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Joined: Tue Jan 16, 2007 12:00 am
Posts: 113
Location: UK
model: 906 Paso
year: 1991
Managed it without removing pulley. For the horizontal belt, found it easier to fit over central drive pulley..trick that helped was to engage as many teeth as possible at top of pulley, then give belt a final push over the flange at bottom of pulley...bought a digital fish scale to set the tension pulley, according to Haynes manual its should be 10lbs...any confirmation on this figure?

ps, going back to the vertical cam pulley, I screwed in two 40mm bolts into the pulley (threaded holes) to hold it while I fitted the belt....


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 Post subject: Re: Belt renewal /correct part number for late 906?
PostPosted: Tue Sep 20, 2016 8:07 am 
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Joined: Tue Jan 16, 2007 12:00 am
Posts: 113
Location: UK
model: 906 Paso
year: 1991
Had a bit of a break....but engine is up and running after 4 years storage....before I put cam covers back on, what do I torque the belt tension adjuster bolts to? found no reference in Haynes or workshop manual...


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 Post subject: Re: Belt renewal /correct part number for late 906?
PostPosted: Tue Sep 20, 2016 9:41 am 
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Joined: Fri Jul 24, 2015 11:21 am
Posts: 131
Location: Belgium
model: 750 Paso
year: 1989
Hi,

In the Ducati Manual it says: "Timing belt stretcher fixing screw" 20~24 N.m (14.5~18.1 lb/ft). :idea:
Is more or less the standard torque for M8 screws and bolts.

Good luck! :thumbup:

Frank

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Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010


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 Post subject: Re: Belt renewal /correct part number for late 906?
PostPosted: Tue Sep 20, 2016 9:41 am 
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Joined: Fri Jul 24, 2015 11:21 am
Posts: 131
Location: Belgium
model: 750 Paso
year: 1989
Hi,

In the Ducati Manual it says: "Timing belt stretcher fixing screw" 20~24 N.m (14.5~18.1 lb/ft). :idea:
Is more or less the standard torque for M8 screws and bolts.

Good luck! :thumbup:

Frank

_________________
Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010


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 Post subject: Re: Belt renewal /correct part number for late 906?
PostPosted: Tue Sep 20, 2016 7:20 pm 
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Joined: Tue Jan 16, 2007 12:00 am
Posts: 113
Location: UK
model: 906 Paso
year: 1991
thanks Frank...


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