Ducati Monster Forum

Been a while since l did this last time, 10 years or so, so memory a little rusty...

1. Is this correct
https://www.bike-parts-ducati.com/ducati-motorcycle/Monster/1998/Monster_900/Monster-900/CAMSHAFT/676/2311/0/676. ?
My Haynes shows #19 w sealed side outwards, not towards cam lobes.

2. All parts in correct order, is it just to tighten #1 (new of course) and all will be proper w correct tension?
Have a vague memory of that #8 must be in precise right position to not bind #9 (or the speedo gear) and to not stress bearings
#8 & #13.

3. Anything else to look out for?

Morning,

this is what it looks like on my old, on-the-shelf and sa far as I know never-changed ST2 heads:

(https://live.staticflickr.com/65535/51782771620_d384b77d19_k.jpg) (https://flic.kr/p/2mTSeVf)2021-12-28 10.30.29 (https://flic.kr/p/2mTSeVf) by torbjörn bergström (https://www.flickr.com/photos/125016045@N02/), on Flickr

I don´t remember what I did on the m800, but it´s still running. I suppose it has to do with what the oiling bore is for ...

Hmmm, seems many have holiday absence...

2 bids so far, thx Thorbjörn, and my parts dealer (Biscaya) says open end towards lobes.
So altogether, 4 bids, 2 vs 2. [roll]

The seal on the cap of my old 94 M900 is inwards but the outer seal on the belt side is outwards. I expected the seals to all be outwards.

The old oem manual gave no instruction. :P

Edit. I posted some incorrect info re the oil circulation and have deleted it.
Don't know what I was thinking. Please ignore it.

(https://www.rocketseals.com/assets/images-bucket/Oil%20Seals.jpg)

The lip of the seal, the part with the spring, should face the source of the oil.

An elegant explanation [wine].

The oil feed is definitely into the cavity outboard of the bearing so the seal lip faces it as you say.

Seems logical, maybe we have a winner, open end towards cavity, not lobes. :)

SOP. Been done that way forever. ;)

Sooo, how about no 2, just screw it together and all will be dandy?

I don't know about that part. Tony has a factory workshop manual.

I'll check it.

Get the torque right. [thumbsup]
Factory manual says :
69-74 Nm cam pulley nuts
59-64 Nm on driveshaft

Values are rounded.

Haynes says 70-75 & 60-65.

Ok, thx.

Just a bit anxious about the fitting of #8 bearing since it has no fixed place.
Will just screwing it all together fix its place just by screwing it all together?

The way I see it from the illustration, the spacers, and the journal in the head for the bearing, fixes the bearing correctly.

+1
 just looked at some heads with cams removed, but otherwise complete with bearings and spacers. Insomnia.

I also deleted an incorrect lubrication statement I posted. (I'm sure you guys already knew that and were thinking I should lay off the sauce).

I'll have to post a pick of the manual illustration, its not great. The Haynes photos are more helpful. As long as you recorded the order of the shims. One on the journal against the lobe and one on the bearing cap end. Between the inner bearings is a tacho gear or spacer for the Monster heads.
I could find no guidance on pressing in the inner bearing.

Some marks left from previous bearing, l`ll go w those.
Will mount rev gear side first, possible to check things through its hole.
Thx all f help.

The large bearing (6004?) on the inside goes in first, hard against its seat in the head.  Then fit the spacer or tacho driver and the smaller outer bearing and push them against the inner bearing, while supporting the inner bearing so it doesn't move.

Thanks for sharing that.

https://www.youtube.com/watch?v=0onSW-bZOLk

Open end facing cam (and no sign of middle bearing), hmmm...  [roll]

Got new valve guide seals, 2 green and 2 black. Haynes says black on intake, white exhaust, correct?
Does it matter? IIRC l had all green last time I did this. They do look the same.

The oem manual backs the Haynes manual. Green seals for exhaust and black for inlet.

Yup, paid the bill and saw my supplier noted "green=exhaust!".

2 b sure 2:

https://www.bike-parts-ducati.com/ducati-motorcycle/Monster/1998/Monster_900/Monster-900/CAMSHAFT/676/2311/0/676

#4 has a slot for #15, that slot is just for convenience when mounting, right?
When #1 is fastened, #4 comes more inwards and is not secured by #15, that's how it should be?
Think so, same on both heads when test mounted.

Looks like 4 (pulley plate) is pressed against 6 (the spacer) when 1 (the nut) is tightened.
Is that how it looks when put together?

Yes.