If anyone has a crankshaft turning tool they no longer need, I am in the market for one. Please let me know what you want for it. and, I am about to do a belt change for the first time on this bike, ( have done them on a 2v before), whilst I am ordering the belts is there anything else that needs to be changed whilst doing this job, like the nuts on the tensioning pulleys? Any advice appreciated.
Steve I thought that a 'special tool' was needed as the 'dogs' on the tool had to engage in the recesses on the end of the crankshaft? If it's the same end of crankshaft on a 748 as a 749 I will consider that way. Many thanks.
If you have a dry clutch just pop the spark plugs out, take the clutch cover off and rotate the engine with the clutch, it will turn very easily.
With the spark plugs out there isn't much pressure needed to turn the engine, the bolt has worked fine for me. Steve
tbh the reason I wanted the tool was because I have never done a 4 v before, I have studied the cycleworks video's on how to do them on u-tube and know that I have to turn the crankshaft backwards 270 degrees at one point, and thought I am less likely to cock it up if I have the correct tool for the job, where I can judge the 270 degree rotation rather than revolving the engine with the rear wheel whilst in gear.
Don't use the rear wheel, use the clutch, its far easier, and its on the same side as the belts. It's a very easy one handed job to rotate with the plugs out.
You can use a M8 bolt, short spacer and a nut to lock it all off...... Use either a spanner or Allen key to turn depending on the bolt used. Tbh, the 270 degrees should be done on all motors. 2v or 4v as it places the rear cylinder at tdc and takes the pressure off the rear belt from the closing spring on the intake rocker/s. If not done, this pressure is applying tension to the belt and the setting you make will be wrong. if you do use the rear wheel or clutch to turn the motor, use the cross cut in the crankshaft end as a reference. It's easier to use the bolt method tbh.
I've been using an M* bolt with a locknut for years but this Christmas I got a Laser engine turning tool as a present. :smile: It has the advantage too that you can fit a degree disc to it.
Been thinking about this,and I see no reason why I can't use a degree disc also , sandwiched between 2 spacers on a long 8mm bolt. I do want to ensure I can do the 270 degree rotation accurately.
The 270 deg turn is to get the vertical cylinder to top dead center, this is 3/4 of a turn and with the plugs out you can feel the piston reach tdc quite easily with a long screwdriver. Steve
Steve Got it now. I just need to guestimate the 3/4 turn, and then ensure I'm at T.D.C on the rear cylinder with something down the plug hole. Many thanks.
Evening all, I'm also hopefully about to pop my "belt changing" cherry and had a question about the belts themselves. Being a bit skint, I had a search through eBay and came across some ads for belts made by a company called "dayco". Has anyone used them as an alternative or have any other brands they could recommend? Ducati belt = £135+ Dayco belts = £37
Try a search the belts............... Personally, I wouldn't go near them but others have used them. They aren't Kevlar reinforced as per the ducati belts. you get what you pay for and the results of a failure will at best cost you a fortune.
John I rotate with rear wheel in gear. Also I would get that fancy, and cheap, cam holding tool. You pop it in place it locks the cams. Take belts off, put new on and bobs your uncle as cams did not move. Then only do tension with microphone and that software that floats about.
Lucas The fundamental reason for wanting the crankshaft turning tool was to ensure that I could accurately rotate the engine 270 degrees backwards. It would be easier to judge with something directly connected to the crankshaft. I do appreciate that I can turn the engine with the rear wheel whilst it's in gear, and of course with the clutch, but I like to keep things as simple as possible ( due to sods law, Murphys law, and C*nts constant!) Spent many hours now getting very frustated as I can't do the apparently simplest of things- Downloading the bloody belt tensioning software from Ducatidag! ffs, it's never easy is it!
Yes belt snapped on a bike I did not had a chance to service as it was all done when I got it so what are you saying?
