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Sprag Gear issue

Started by He Man, May 27, 2012, 12:39:13 PM

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He Man

#15
May 28, 2012, 07:14:24 AM
which marks on the layshaft? I was lining it up with the 2 dots, one on the timing sprocket and one on the timing gear. On my manual it reads that the dots need to meet and it will be in time.

since the sprocket can only slip on to the crank shaft via the woodruff, then the dot can only ever be in 1 place relative to the layshaft.

the small guy here  is what engages everything so as long as the woodruff is there.

Monsterlover

#16
May 28, 2012, 07:17:42 AM
Would it be worth pulling the belts and turning the cams over by hand to check for binding from bent valves?

"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

ducpainter

#17
May 28, 2012, 07:25:58 AM
Quote from: He Man on May 28, 2012, 07:14:24 AM
which marks on the layshaft? I was lining it up with the 2 dots, one on the timing sprocket and one on the timing gear. On my manual it reads that the dots need to meet and it will be in time.

since the sprocket can only slip on to the crank shaft via the woodruff, then the dot can only ever be in 1 place relative to the layshaft.

the small guy here  is what engages everything so as long as the woodruff is there.

I was talking about the mark on the belt pulley on the layshaft/case.

Quote from: Monsterlover on May 28, 2012, 07:17:42 AM
Would it be worth pulling the belts and turning the cams over by hand to check for binding from bent valves?


I really don't think the timing gears came unmated wile it was running...don't think there's enough room to move.

That said a quick compression test would give an equally good idea if there were more problems.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


He Man

#18
May 28, 2012, 07:39:19 AM
oh you mean on the right side of the motor. Ive got them lined up right now. and these two dots are also lined up. sounds like it should be in time.

The timing gears had to have come unmated because the timing gear was not moving when i was looking through the ignition pickup sensor port, yet the pistons were still moving.

the woodruff can move move, so im asuming it moved enough so it can no longer engage the tiing gear on the layshaft.

He Man

#19
May 28, 2012, 07:55:23 AM
i think this is the part number i need

779.1.109.1A

ducpainter

#20
May 28, 2012, 08:05:09 AM
Quote from: He Man on May 28, 2012, 07:39:19 AM
oh you mean on the right side of the motor. Ive got them lined up right now. and these two dots are also lined up. sounds like it should be in time.

The timing gears had to have come unmated because the timing gear was not moving when i was looking through the ignition pickup sensor port, yet the pistons were still moving.

the woodruff can move move, so im asuming it moved enough so it can no longer engage the tiing gear on the layshaft.
Did you have to move the timing gears on the left side?

I think you're mistaken about what was and wasn't turning...

doesn't matter.

If the marks line up put it together. It will run or not.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


ducpainter

#21
May 28, 2012, 08:06:17 AM Last Edit: May 28, 2012, 08:08:00 AM by ducpainter
Quote from: He Man on May 28, 2012, 07:55:23 AM
i think this is the part number i need

779.1.109.1A
where did you get that #?

It's for the plug in the end of the shaft.

I think you need 750.1.012.2A Nut
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


He Man

#22
May 28, 2012, 08:30:31 AM
you are correct, i read the number above that one by mistake.

750.1.012.2A Nut is the correct part i would assume.

i think its a m24x1.0 nut, and if all else fails i was going to call up Nicholas MFG and see if they can express set of their double nuts.
There is also a fastenal nearby, but they only carry 2.0 pitch.

I did not have to move the timing gear on the left side. That is the timing gear that is drives the pully directly, but the sprocket on the layshaft, i did move. it was mated to the timing gear, but i dont think it was mated to the crankshaft which is why the crank spun but the timing gear did not.

ducpainter

#23
May 28, 2012, 08:36:38 AM
Quote from: Monsterlover on May 27, 2012, 04:22:24 PM
I have a nut from an injected 900. Should be the same.

How can I get it to you?

You could pm Kevin...he'd fed-ex it to you.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


He Man

#24
May 28, 2012, 11:06:32 AM Last Edit: May 28, 2012, 11:11:14 AM by He Man
i pmed him, and ill know by tuesday morning if ill need it to be shipped. ( the local ducati dealership, some local techs and fastenal)

heres some more pics..

this is the woodruff, it normally doesnt sit in this position, but i suspect it moves around becasue oil comes out of it to lube the gears. It can swing in the other extreme as well. and in opposite position, i suspect it didnt engage the timing sprocket.


here is the timing gear slipped over that woodruff. If the woodruff was sitting flush, then the starter gear would just be spinning on the crank shaft freely.





some damage caused to the timing sprocket. the wooddruff doesnt show any damage.


there is light damage to the gear teeth. possibly due to the sprocket backing out.


here, we see the woodruff lined up with the sprocket, and the timing dots ill meet when the gears spin.


just neeed to watch out for that washer. cant let it go all out of wack.


this is how i assuem the flywheel lines up. there is a notch on the laymen shaft, and it should correspond to the dot on the flywheel. i hope. i cant find any documentation of this.


Il lhave to double check but i think the flywheel should mate up better than it shows in the picture. seems like its not sitting fully flush.
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