force trim leakdown

[dogboy8]

89 force 125HP Tilt holds great with no leak down since I replaced the seals in the pilot valves in the pump body, but when I tilt it down to the trim cylinder it leaks all the way down over the course of a couple of hours. Also, I just replaced the o-ring in the trim cylinder. Any suggestion on where to go from here?? Thanks a million<br />Greg

 

[clanton]

Re: force trim leakdown

The shuttle valve between the 2 pilot check valves may be sticking, valve should move back and forth smoothly. If you used an o-ring for the check valve needle, o-ring may be too small.

 

[dogboy8]

Re: force trim leakdown

Clanton, I used the seals that you recomended in a post I saw from a while ago (carb seals). Is there any trick to putting the seals on the valve?? Like I said the tilt holds great (it was leaking down all the way in less than 5 minutes before). I'll give the shuttle valve a look today. Is that an easy to match o-ring on there?? Thanks a million for your reply. Greg

 

[clanton]

Re: force trim leakdown

I clean the check valve needle with a tooth pick or sewing needle. What you are saying is the trim cylinder is leaking down, right. Could be o-ring on check valve body, shuttle valve, pilot valve seal, or trim cylinder piston seal. I would check the pilot check seal again. I used a Ford and Chev<br />air condition o-ring kit for some of the o-rings.

 

[ssuajk]

Re: force trim leakdown

I am looking in my manual and I don't see a Pilot ck valve listed anywhere in the diagrams

 

[ssuajk]

Re: force trim leakdown

So how many o-rings does one person need to replace pilot check valves and shutter valves seals. I want to attempt this project but I want all my pats available. i think I'll get a fill screw o-ring too

 

[ssuajk]

Re: force trim leakdown

Please just the # of o-rings for the 2 pilot valves and the 1 shuttle valve,Quote "The problem in the valve body is the seal on the pilot valve pn 820719" does that mean order 2, one for each pilot valve? AND<br />The shuttle valve only has the o-ring in the center what is the part # for this? Anyone please

 

[ssuajk]

Re: force trim leakdown

^^^

 

[dogboy8]

Re: force trim leakdown

You will need 2 of the small o-rings, one for each pilot valve, and I have no clue what the part # for the shuttle valve o-ring is. You should try a new post so the experts out there will see it. I'm the one who asked the questions in the first place, so i get an e-mail telling me someone (you) responded to my post. Good luck, and this repair will work out well.