Power Shift Question

Kays Supply · Jun 30, 2011

It has been a long time since I tinkered with a Power Shift. My neightbor's YM 1810 has a slow to go reverse. It pulls fine but takes several seconds to go into gear after it is shifted into reverse. Forward works fine. It just started doing it after a tranny fluid change. Any ideas where to start?

winston1 · Jun 30, 2011

Assuming the strainer was cleaned I am going to "guess" something amiss in the main relief valve area. Valve stuck, pilot hole plugged, or bad spring. Seems to me this is the main area of trouble most times people have a problem similiar to this. Never worked on one of these in my life. Basing this on my forum readings and a ym226 service manual.

Kays Supply · Jul 1, 2011

Like I said, it has been a while , but I think I remember taking the top apart and cleaning some pistons etc. It sounds like we are on the same page. I'll wait for some more input before tearing into it for him.

MJPetersen · Jul 1, 2011

I had a problem with my 1510D that several times it hesitated and then would go into gear very slowly. Finally one day I was working stopped to change directions and nothing--not forward not reverse, not slowly, nothing. PTO worked and the tractor felt like it was engaging the trans, but no movement. I read this post which talked of the relief valve which allows a slow engage. When I took mine apart I found the springs were ok (they have been known to break) but in the tiny port on th eside of the valve was a spec of dirt. cleaned that port out and it began working like it was supposed to and have not had a bit of trouble since.

I thought that I had pics, but cannot find any right now.

I did have a problem that sometimes it would not like to go in reverse when it was cold. I took the linkage to the spool apart. Where the shift lever attaches to the shift spool there is a 5 mm x 25 mm pin. I found that my pin was bent and worn. I replaced the pin with a hard bolt. I think that the shifter spool was not being put completely into the detent position for reverse, because the lever had too much slop and could not move far enough. When it is warm it seemed to self locate the detent position. Any way it works for me.

Mike