Exup plate

[Tefer]

Hi,


I have had the Exup valve dismantled for servicing, turned out to be a pig of a job as bolts were seized. I have managed to get them out with help of a friend. I am now looking at building back up, but the plate seems like a really tight fit, like i would need to tap back on?


How loose should the valve plate be?

[Falcon 269]

Not loose but equally, it shouldn't require tapping into place.  Snug fit is fine, should bolt up flush without need for additional assistance.

[tommyardin]

Not loose but equally, it shouldn't require tapping into place.  Snug fit is fine, should bolt up flush without need for additional assistance.

Don'y know anything about Exup valves, but, the plate looks like it is not going on square, or maybe it is just the angle of the picture.

[Tefer]

Hi,


Thanks guys, i will clean it up a bit more and see of i can get it to fit better. It probably was not squared quite right there but its defo not fitting quite right so will keep trying 

[Tefer]

Ok


The plate is now going on    but on looking at my parts for rebuilding a washer is missing http://www.cartestsoftware.com/fz1/images/exupmaintenance04.jpg, now i am pretty sure it was never there as i was very careful when dismantling. I have also found what looking like heavy scoring to the valve and end plate, could this be due to a missing washer or over tightening?
Does anyone have a washer for dimensions or will i got to Mr Yamaha for £2, I might order the coolant drain screw too.
Almost at the stage if getting it all back together and an end is in sight. Although decided i am going to change the cables.

[cl1ve2004]

I had to file my plate to get rid of that shoulder where the valve has been rotating as the valve wouldn't move freely when i re assembled it (should rotate easy) the groove in the valve is same as mine when I took it apart   

[ogri48]

Looks like the valve has had too much free tolerance and jumped the dog that confines it to its useable degree arc. Possibly because of the missing washer. I'm probably wrong, though, I usually am

[Falcon 269]

The washer goes on the outside of the plate.  The end float spring then goes on next, followed by the pulley.  If the washer was never fitted, the spring wouldn't have been able to control end float, which could explain why the valve and the inner face of the plate have worn like that.

Clean up everything as best you can and assemble with a suitable washer in the correct place.  Check how much end float you have and then you can decide whether or not you need to put a shim on the inside of the plate.