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General Forestry => Forestry and Logging => Topic started by: Satamax on July 10, 2021, 05:16:18 PM

Title: Massey Powershuttle? Yorque converter squealing !
Post by: Satamax on July 10, 2021, 05:16:18 PM
Hi everybody.

My crane has a "powershuttle" transmission

I understand that there is a torque converter in there.  When i drive, the thing squeals, like a loose belt. But it isn't a belt.

Anybody ever heard that?  What was the culprit? If ever you found out.

I know that a filter change is long overdue. But i can't seem to unstick the filter bowl. 3/4 ratchet, with breaker bar doesn't do it.

Well, if anybody is more savy than me on those, i'm all ears.

Thanks guys.


(https://forestryforum.com/gallery/albums/userpics/19153/IMG_20210617_161956.jpg?easyrotate_cache=1623941924)

Title: Re: Massey Powershuttle? Yorque converter squealing !
Post by: Satamax on July 11, 2021, 02:54:16 PM
Here's the insides. 


(https://forestryforum.com/gallery/albums/userpics/19153/IMG_20210711_171220.jpg?easyrotate_cache=1626029474)
 
(https://forestryforum.com/gallery/albums/userpics/19153/IMG_20210711_171215.jpg?easyrotate_cache=1626029472)
 
(https://forestryforum.com/gallery/albums/userpics/19153/IMG_20210711_171231.jpg?easyrotate_cache=1626029468)
 

It's a welded torque converter. Oil fed from the "nose" .  I will change both filters.  The return one seems clean. But I'll change it anyway. The pressure one is black. So that's for sure a replacement. 
Title: Re: Massey Powershuttle? Yorque converter squealing !
Post by: mike_belben on July 11, 2021, 03:02:36 PM
A non lockup convertor is usually just two housing shells with fins brazed inside and a stator plate assembly.  If its truly inside the convertor i cant think of what it would be.  


My quad has a single complex sealed brake assembly on back axle that has normal rubber seals and that thing squeeks so loud you can hear it for a mile.  I think your squeek is more likely to be the convertor hub squeeking on a rubber seal in the trasmission pump than it is to be from inside the convertor itself.  If i swerve around the weight on that hub will start or stop it.   
Title: Re: Massey Powershuttle? Yorque converter squealing !
Post by: Satamax on July 11, 2021, 06:13:38 PM
I'll know more once the filters will have been changed.  Massey manual says  no problems can come from the torque converter. Rather from the pump feeding it. 
Title: Re: Massey Powershuttle? Yorque converter squealing !
Post by: Satamax on July 12, 2021, 03:18:53 AM
And there is "electric hydraulic" forward and reverse. And clutch is ?? ?? . I mean, to change speed i need to press a button on the stick. And forward ans reverse are actuated with a switch at the wheel.

There is two hydraulic distributors, one big one, for forward and reverse. And one on the side, for the selecting the 4x4 mode.

But i haven't seen the clutch. But as i have seen on some diagrams from other machines, it could act on the torque converter. Freespooling it. But i don't know much about it.
Title: Re: Massey Powershuttle? Yorque converter squealing !
Post by: mike_belben on July 12, 2021, 08:01:27 AM
Wish i could help but i have no idea max.
Title: Re: Massey Powershuttle? Yorque converter squealing !
Post by: Satamax on July 13, 2021, 12:03:46 PM
Finally found the two filters. May they'll be here by Friday.