need pictures of cambelt pulleys
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
need pictures of cambelt pulleys
if someone has the belt covers removed could you make a picture of the camshaft and driving pulleys?
I noticed that my belts hang off the camshaft pulleys by 1-2mm. About as much as the thread of the camshaft is showing. The nut of the driving pulley sits on the end of the thread. Looking at the position of the belt on the tensioner pulley it seems the driving pulleys are a bit further out than the camshaft pulleys.
G.
I noticed that my belts hang off the camshaft pulleys by 1-2mm. About as much as the thread of the camshaft is showing. The nut of the driving pulley sits on the end of the thread. Looking at the position of the belt on the tensioner pulley it seems the driving pulleys are a bit further out than the camshaft pulleys.
G.
- Attachments
-
- DSCF1576.JPG (178.69 KiB) Viewed 10863 times
- randtcastell
- Posts: 356
- Joined: Fri Nov 13, 2009 4:33 pm
- model: 750 Paso
- year: 1987
- Location: San Francisco Bay, California USA
- Contact:
Re: need pictures of cambelt pulleys
This is what I have:
1987 Ducati P750
1973 Honda CB450
2022 KTM RC390
1973 Honda CB450
2022 KTM RC390
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
Re: need pictures of cambelt pulleys
thank you very much! Do your belts run centered on the idler and tensioner pulley?
Mine don`t. Moving the driving pulleys inward would correct that but looking at your pictures it seems they are in the same position as mine (there`s no remaining thread visible) which would indicate that my camshaft pulleys should move outwards but then I doubt that the belts not running in the middle of idler and tensioner pulley is normal.
Mine don`t. Moving the driving pulleys inward would correct that but looking at your pictures it seems they are in the same position as mine (there`s no remaining thread visible) which would indicate that my camshaft pulleys should move outwards but then I doubt that the belts not running in the middle of idler and tensioner pulley is normal.
- Attachments
-
- DSCF1590.JPG (54.7 KiB) Viewed 10845 times
-
- DSCF1597.JPG (116.21 KiB) Viewed 10845 times
-
- DSCF1598.JPG (118.12 KiB) Viewed 10845 times
-
- DSCF1600.JPG (46.05 KiB) Viewed 10845 times
- randtcastell
- Posts: 356
- Joined: Fri Nov 13, 2009 4:33 pm
- model: 750 Paso
- year: 1987
- Location: San Francisco Bay, California USA
- Contact:
Re: need pictures of cambelt pulleys
These are old photos, but they may help a bit. I can take new photo closeups of the idler and tensioner pulleys if you need them. Just let me know I could do it tomorrow.
I think someone more knowledgeable on this forum will be of help clarifying this issue. Good luck!
I think someone more knowledgeable on this forum will be of help clarifying this issue. Good luck!
1987 Ducati P750
1973 Honda CB450
2022 KTM RC390
1973 Honda CB450
2022 KTM RC390
- Brutus
- Posts: 257
- Joined: Sun Jan 16, 2005 12:00 am
- model: 750 Paso
- year: 1989
- Location: The Netherlands
Re: need pictures of cambelt pulleys
Gerhard, here's a picture of the pulley on the vertical head.
- Attachments
-
- 20150919_135638_2.jpg (115.15 KiB) Viewed 10798 times
_________________
Better too late than too ugly..
Better too late than too ugly..
- higgy
- paso grand pooh-bah
- Posts: 3328
- Joined: Tue Jul 29, 2008 9:50 pm
- model: 907 I.E.
- year: 1992
- Location: Hilltown,Pennsylvania
- Contact:
Re: need pictures of cambelt pulleys
Hey G
Didn't you change your cams at some point ?
Didn't you change your cams at some point ?
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
Re: need pictures of cambelt pulleys
yes I did but that belt offset of course remained. I finally want to figure out what causes it.
Thanks again for the pictures. It would be nice to see some that show the pulleys and belt from the top or bottom to get a better picture of the position of the belt on the idler and tensioner pulley.
Thanks again for the pictures. It would be nice to see some that show the pulleys and belt from the top or bottom to get a better picture of the position of the belt on the idler and tensioner pulley.
- higgy
- paso grand pooh-bah
- Posts: 3328
- Joined: Tue Jul 29, 2008 9:50 pm
- model: 907 I.E.
- year: 1992
- Location: Hilltown,Pennsylvania
- Contact:
Re: need pictures of cambelt pulleys
If it was there to begin with I'd have to remove the crankshaft pulley and see what the issue is. The rest all seems to look the same in terms of overriding the pulleys and rollers. How do things line up on the other side of the crank ?
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
-
- paso grand pooh-bah
- Posts: 1878
- Joined: Wed Dec 05, 2007 12:35 am
- model: 906 Paso
- year: 1990
- Location: Newzealand
Re: need pictures of cambelt pulleys
Yeah , that's what I was thinkin' but I didn't want to say it. Kinda makes me think that if the cam pulleys and the idlers both appear to be in line .... its more likely that the bottom pulleys on the jack shaft are the ones out of line.higgy wrote: How do things line up on the other side of the crank ?
I wish I was young again............Id be heaps smarter than last time
- higgy
- paso grand pooh-bah
- Posts: 3328
- Joined: Tue Jul 29, 2008 9:50 pm
- model: 907 I.E.
- year: 1992
- Location: Hilltown,Pennsylvania
- Contact:
Re: need pictures of cambelt pulleys
jack, crank it all a shaft something is shimmed in the wrong place or
with the wrong shim
got a new one for Hamish....
with the wrong shim
got a new one for Hamish....
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
Re: need pictures of cambelt pulleys
crankshaft pulley? On my crankshaft there`s the alternator on one side and the clutch on the otherIf it was there to begin with I'd have to remove the crankshaft pulley and see what the issue is.
How do things line up on the other side of the crank ?
The original shims for the driving pulleys are 0.2 or 0.5mm. I doubt it would make a noticable difference swapping one with the other as the belts are hanging 1-2mm off.
I`ve received the pulley tool a few days ago (bought this one as it`s the cheapest I could find http://www.ebay.co.uk/itm/Laser-5341-Ca ... 534800956?). Now I just need to find the motivation to pull the belts off again. It`s currently 0-5°C and not too much warmer in the garage.
- higgy
- paso grand pooh-bah
- Posts: 3328
- Joined: Tue Jul 29, 2008 9:50 pm
- model: 907 I.E.
- year: 1992
- Location: Hilltown,Pennsylvania
- Contact:
Re: need pictures of cambelt pulleys
I have a 906 crankcase split I'll take a look maybe give me some idea of what to look for
yeah yeah I get it
update: 906 appears to be a little different,timing shaft protrudes further past the timing belt drive gears and their nut
Still curious how the gears on the other end line up assuming they line up good it has to be the thrust washers, or some other oddball issue like cylinder and head alignment. Don't remember if you bored or replaced the cylinders ?
It does appear the timing shaft is captured in the case halves on the drive side, did you tighten that end first ?
If so I guess your only viable option is loose the thrust washers you have installed for some much thinner ones to get the alignment kosher
Hey I just noticed the timing gears don't line up very well on this spare case half
crankshaft pulley? On my crankshaft there`s the alternator on one side and the clutch on the other
yeah yeah I get it
update: 906 appears to be a little different,timing shaft protrudes further past the timing belt drive gears and their nut
Still curious how the gears on the other end line up assuming they line up good it has to be the thrust washers, or some other oddball issue like cylinder and head alignment. Don't remember if you bored or replaced the cylinders ?
How did they line up before you changed them ?Adjustible cam belt pulleys (changed all other pulleys from square to round teeth)
It does appear the timing shaft is captured in the case halves on the drive side, did you tighten that end first ?
If so I guess your only viable option is loose the thrust washers you have installed for some much thinner ones to get the alignment kosher
Hey I just noticed the timing gears don't line up very well on this spare case half
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
-
- paso grand pooh-bah
- Posts: 1878
- Joined: Wed Dec 05, 2007 12:35 am
- model: 906 Paso
- year: 1990
- Location: Newzealand
Re: need pictures of cambelt pulleys
You have a clutch on your crankshaft ?paso750 wrote: crankshaft pulley? On my crankshaft there`s the alternator on one side and the clutch on the other
.
I wish I was young again............Id be heaps smarter than last time
- higgy
- paso grand pooh-bah
- Posts: 3328
- Joined: Tue Jul 29, 2008 9:50 pm
- model: 907 I.E.
- year: 1992
- Location: Hilltown,Pennsylvania
- Contact:
Re: need pictures of cambelt pulleys
jeez
You have a clutch on your crankshaft ?
knee bone's connected to the thigh bone,thigh bones connected to the...............
Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
Re: need pictures of cambelt pulleys
Now that`s an interesting picture
I don`t remember how the pulleys aligned with the old belts and pulleys. Also I let a shop do the whole engine rebuild so there`s not much I can say about it.
I don`t remember how the pulleys aligned with the old belts and pulleys. Also I let a shop do the whole engine rebuild so there`s not much I can say about it.
I`ve found some topics on other Duc forums about that. At least that lines up on my engine.Hey I just noticed the timing gears don't line up very well on this spare case half