cam bearings

I have done the front cylinder...........and at a guess the rear one can be done just about.....

If you need to know how it was done, just shout.....

But first of all, either buy or make a socket for the silly pulley nuts and a tool to hold the pulleys..........a large spanner is wot I done used for the pulley tool.

AL

 

Assuming the head design is like a 900? then I would say it would be possible (although not sure of clearance between frame & head on rear cylinder).

Turn the engine 'till the piston's high enough to stop the valves falling in though before you remove all the rockers. :wink:

The only thing that would concern me though, is that if the bearings are shot then the head could probably do with a refresh anyway (reseat valves etc.) so it maybe worth dismantling to do the whole job...

 

Get the the pulleys to all line up with their timing marks.....Whip the cam covers off.

Firstly remove the tacho drive pinion and boss from the head (one bolt).

I found that only the 'push down' rockers needed to be removed.......the raising rockers will keep the valves from dropping....note the shims locations either end of the rocker shaft.........You will have to turn the cam slightly in both directions to get it to miss the raising rockers as you draw it out.


There are three bearings, one that is in the cam bearing cap on the left side of the head (remove this next and watch out for thrust washers)..........

........then once the pulley is off on the right side, there is are spacers and oil seal........dig the seal out carefully.

Once that is all off, you can draw the cam from the left side (it may pay to do this first)..........there could be a woodruff key on the right side of the cam which is meant to keep the tacho drive gear in place on the cam.....(the 600s and 750s appear not to use the key on later models)

Pull the first right side bearing out (bolt, washers and socket method) and the tacho drive gear will be seen....that will lift out.

The other right side bearing (or centre bearing) can then be pulled out.........I wouldn't knock it out.

When reassembling (reverse order, really and if you use any Bearing Fit you have to work pretty fast) make sure that you bolt the cam cover up before you tighten up the silly nut...........and when you do that up it has to be f***ing tight to make sure the outer right side bearing is pushed hard against the tacho drive gear, which in turn is up against the center bearing, otherwise the tacho drive gear may slip on the camshaft and will get chewed up.........Which is why mine had to come apart.

 

I'm not totally sure but Ducti John may be your nearest and probably more cost efficient option

 

I would be surprised if your cam bearings need changing, given the age of your bike..........Mine has done 31K.

I had to do my front ones (well, two of them....the middle and the pulley side) because prior to me getting the bike, some t*t of an indy Ducati specialist was asked to change the tacho drive pinion because it was making an 'orrible noise and the pinion was chewed up and the cable kept breaking........(apparently it was the second time the pinion was changed for the same reason).

The 'specialist' did change the pinion, but not before he had stuffed an airline in the pinion hole to clean it out.............If he been that much of a 'specialist', he would have used a mirror to look down the pinion hole to be able to see the edge of the tacho drive gear on the cam which was also all chewed up.........

.........so effectively he blew all the broken teeth and bits of chewed up particles into the bearings......and elsewhere.........

..........so my two bearings were well and truly sh*gged.

However, the third cam bearing inside the cam retaining cover seemed to be perfectly OK.

AL