Dick, unfortunately your 100% correct about it being a dust boot. Kicking myself for overnighting a dust boot. Guess I'm stuck here for a few more days.
The rebuild kit you linked looks like it's for the engine side.
I have a wm90 series throttle. Not sure what model of the wm90 I have though. Does anybody know how to to tell the different models apart or what typically comes in buses. I have a 91 Thomas saf t liner if that helps. The repair kit part number appears to be r90. If it's not a whole lot more I think I'd rather buy a complete valve, to be certain it works.
I'm thinking I have 111301. Type 2 with a modulating pressure range of 0-120 psi. Can anyone confirm this?
There's also the wm90dx but I don't think I have this, the internals look a little different.
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