Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Ducati 748 cambelt change

[mouldie]

Hello! I've just changed the cambelts on my 748 and I'm really pleased that I dared to tackle it, and that it went well. It was easier than I expected! Anyway, I'm concerned at how close the toothed sections of the belt run to each other around the tensioning pulley and I hoped someone could advise whether this looks normal. In terms of tensioning I have applied the following:

1. Applied the 45 degree turn on the longest belt run
2. Checked the clearance between the casing and the belt using a 5mm and 6mm allen key.
3. Checked the vertical movement of the belt against a 10mm spanner to see that there is about 5mm rise and 5mm fall under reasonable pressure.

The belt tension 'feels' right but the gap between the toothed sections is literally 1-2mm at the worst point. Is this correct? I've attached a couple of photos below. If anyone can comment I'd be extremely grateful! Also, on the vertical cylinder the belt sits quite far back on the tensioning pulley, so much so that's it's quite misaligned with the belt section opposite. Is this normal? I took pictures before and after and notice that this is how it was before. I know a belt will find it's own position but it seems a bit odd!

Cheers in advance for any help!

[skidlids]

looks to me like you have turned the tensioner in the wrong direction

[mouldie]

Originally Posted by skidlids

looks to me like you have turned the tensioner in the wrong direction

That could make a lot of sense. I shall check, many thanks!!

[skidlids]

Here you go

[mouldie]

Originally Posted by skidlids

Here you go

Cheers bud! I reckon the vertical cylinder is correct and the horizontal is incorrect. You may have just been a life saver!

[skidlids]

Both look wrong to me

[buggsysps]

I would have to agree with skids both look like adjusted the wrong way. He is a walking manual after all :-)

[nelly]

Yep. Both tensioners are rotated wrong way. Rear looks like you might get belt touching itself. Wouldn't run it up till it's sorted....

[mouldie]

Cheers guys, correct on both counts! You've saved me from a potentially expensive mistake and the embarrassment of admiting I broke my bike!

I was pleased to note that the belt on the vertical cylinder now sits correctly on the tensioning pulley which is another relief.

Thanks again for the comments!

[buggsysps]

Alls well that ends well:-)