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| Removing cam belts http://ducatipaso.org/forum/viewtopic.php?f=2&t=4883 |
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| Author: | Giscard [ Sun Jun 19, 2011 3:19 pm ] |
| Post subject: | Removing cam belts |
Help. Is it necessary to remove the steady stretcher roller as well as the adjustable roller to remove the cam belts. The manual says that this allows the belt to be removed easier. This suggests I can get the belt off without removing the steady roller although it looks like it is going to be a tug of war and I clearly do not want to damage the new belts when fitting them. If I have to remove the fixed (steady) stretcher roller is there a recommended tool as I do not want to commit to using an open ended spanner as a socket does not seem to fit, as the "bolt" just appears to have two flats. I am sure someone has come across this problem at some stage who can steer me in the right direction. |
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| Author: | JWilliam [ Sun Jun 19, 2011 8:13 pm ] |
| Post subject: | Re: Removing cam belts |
I only slacken the tension roller and then ease off the belts by turning over the engine (the difficult bit). You will see that the running pulley bearing is fixed by a circlip so even if you did remove the bearing the boss would still be there. Whatever you do don't remove a pulley to remove/fit a belt, they will shift it only takes muscle, these belts are very tough but don't use any tools only your hands to avoid accidental cuts. Remember to align the timing marks on the three pulleys and you can't go wrong. |
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| Author: | Giscard [ Sun Jun 19, 2011 9:55 pm ] |
| Post subject: | Re: Removing cam belts |
OK I will try a bit of muscle. I did manage to loosen the bolt on the belt guide roller but after about half a turn it tightened up so I gave up on that that. Is there a special tool to remove this bolt. Although the manual suggests taking it off it skims over the removal. It's like everything, easy once you have done it once. Anyone else have any suggestions. |
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| Author: | Tamburinifan [ Sun Jun 19, 2011 11:07 pm ] |
| Post subject: | Re: Removing cam belts |
| Author: | Giscard [ Mon Jun 20, 2011 8:47 am ] |
| Post subject: | Re: Removing cam belts |
Gert - I have managed to remove the 2 allen bolts from the belt tensioners the one I am struggling with is the bolt on the belt guide/non-adjustable roller. As I mentioned this just appears to have 2 flats on the bolt and the manual shows someone cleverer than me removing them. |
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| Author: | Tamburinifan [ Mon Jun 20, 2011 4:17 pm ] |
| Post subject: | Re: Removing cam belts |
| Author: | Giscard [ Mon Jun 20, 2011 9:29 pm ] |
| Post subject: | Re: Removing cam belts |
Thanks Gert. The only reason for removing the belt guide roller was that the manual said it made changing the belt easier. Both you and JWilliam have said there is no need for this so that is OK for me. I will have a go this week but I assume as JWilliam said partially pull the belt of the pulley and turn the engine over and the belt should slip off and on easily. Sorted ! |
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| Author: | Tamburinifan [ Mon Jun 20, 2011 11:30 pm ] |
| Post subject: | Re: Removing cam belts |
What really made it easier was to remove the washer on cam wheel that you have to lift belt over. It`s not needed on my M900 -97 and, after 45000 kms w/o it, doesn`t seem to be needed on my 907 either. Edit: Removed washer fr hoz top cam wheel. |
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| Author: | Mc tool [ Wed Jun 22, 2011 1:04 am ] |
| Post subject: | Re: Removing cam belts |
Both the camshaft pulleys on my paso have flanges on the outer edge . I have always had to remove a pulley to get a belt on/off... even with both guide/tensioner berrings removed |
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| Author: | Tamburinifan [ Wed Jun 22, 2011 11:42 am ] |
| Post subject: | Re: Removing cam belts |
If you remove that flange (that is the washer I referred to), life will be easier. It`s not needed. It`s just mildly pressed on cam wheel, just peel off w screwdriver. |
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| Author: | Mc tool [ Thu Jun 23, 2011 3:51 am ] |
| Post subject: | Re: Removing cam belts |
| Author: | Tamburinifan [ Thu Jun 23, 2011 9:24 am ] |
| Post subject: | Re: Removing cam belts |
| Author: | Mc tool [ Thu Jun 23, 2011 9:29 pm ] |
| Post subject: | Re: Removing cam belts |
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| Author: | Giscard [ Sun Jul 10, 2011 4:53 pm ] |
| Post subject: | Re: Removing cam belts |
 Just thought I would post a quick update on the difficulties that I had changing the cam belts. All you guys that do this regularly will be wondering what planet I was from because why would they make it that difficult. Perhaps so you have to get a dealer to replace them !! Anyway I managed to pull the horizontal cylinder belt just away from the pulley. I turned the rear wheel and it eventually peeled itself off. Success. When I looked at the belt it appeared to be marginally smaller than the new genuine Ducati replacements. As I struggled to get anywhere with the vertical belt and I felt I had passed the point of no return I cut it off. After re-aligning all the dots I found that the new belts went on relatively easily compared with the old ones and were slightly slacker with no adjusters fitted. So the original belts which had no markings had either shrunk or were smaller than the new ones but with the same number of teeth. If this had not worked then I would have removed the flange on the cam wheel as suggested by Gert. However this was not necessary. Thanks for the suggestions. |
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| Author: | ducatipete [ Fri Dec 30, 2011 6:05 pm ] |
| Post subject: | Re: Removing cam belts |
Hi Giscard, what part numbers do you have for your replacement belts, I have been given 73710081A for my 906, and they are not for 907s? which I find strange....plus I would not like to turn the engine/cams to remove the belts...., is it easy to realign the belt pulleys afterwards? 
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