clutch grinding??

[Ginormous]

And the winner is... inertia brake adjustment! I adjusted the inertia brake last night just a little, and the grinding noise stopped. Tonight I adjusted the clutch so it had more play, and the grinding noise came back. *arg* Then I adjusted the inertia brake again (adjusting the clutch threw off the inertia brake adjustment) and the grinding went away again.

Thanks everybody for your help! Especially Winston who guessed right on the inertia brake. It's time to celebrate.

[careyo63]

My guess is the Inertia brake linkage must be lightly applying the brake and slowing the rear end gears,etc. to allow a smooth power shift. Huh!! sounds like One Fancy setup there.

[grainger12002]

o.k. I'll bite, if my powershift sifts firm, can I adjust to soften the response ?

[Car Doc]

Glad it was simple fix I had figured as much!

I use a different terminology is all but talking about the same thing. As it was explained to me by a Yanmar person there is a release valve associated with the inertia brake that dumps pressure to the clutch packs to help shifting also.

I cant prove it either way my manual is pretty vague on exactly what does what. But it does appear there are 2 ports in the clutch shaft next to the brake assy one is dark and one isn't which usually means fluid or not. fwtw

[Car Doc]

o.k. I'll bite, if my powershift sifts firm, can I adjust to soften the response ?

From what I have been told or have personal experience with-no adjustment. A firm shift is a normal thing on these a soft shift would probably mean trouble jmo.

[careyo63]

GOOD question? I sure would like to see a parts Dia. and see how the Inertia barke setup works. May want to upgrade mine to a Power Shift. I just so happen to know were a parts tractor is close by. Hah!!! Steve.

[grainger12002]

CarDoc, Carey
I am with you..
Its my understanding that firm is good, just wondered what other minds were thinking.
I love the powershift, thought it would be real nice if a simple adjustment made it a smoother transition.........

336d in CT

[Ginormous]

GOOD question? I sure would like to see a parts Dia. and see how the Inertia barke setup works. May want to upgrade mine to a Power Shift. I just so happen to know were a parts tractor is close by. Hah!!! Steve.

I remember seeing on a thread here with some pics by a guy in Poland who tore apart his Yanmar transmission. You could search and find them. I believe it was last year some time.

[Car Doc]

Here is what I have on the inertia brake on 336 and probably 3110,3220,3810 and so on all similar is my guess including the 2210 G has. Its black and white or I could tell you exactly what they do the ports that is.

[California]

Its my understanding that firm is good, just wondered what other minds were thinking.

IMHO - These are similar to an automotive AT but lack the torque converter which cushions some of an AT's shifting shock.

The clutch packs inside the Powershift are similar to a multi-disc motorcycle clutch, where noticeable slip after a shift means excessive wear.