mhariush

Hi all

I need to change the o-rings on my Pressure relief valve, the one that's in the head (944 107 139 00) but can't seem to find the sizes anywhere. Jonnybgood suggested Parker's 2-013 and 2-014 and i got them, but they still stuck out enough that I couldn't get the valve all the way down in the hole. It goes further when there are no o-rings. But I forgot to look and see how it looked when installed. But I assume its supposed to be flush, like when it's in there without any o-rings.

Can someone help me out on this?

Thanks.

michaelmount123

Use 011 and 012 o-rings. If you pull the jam screw out you can look in the threaded hole to see that it aligns with the v-slot. The jam screw locates in this slot. If they line up, it's all the way in.

Also, thread the jam screw in until it bottoms in the slot, then back out 1/4 turn. It's sealed with Loctite.