bonefisher21 Posted June 9, 2016 Report Share Posted June 9, 2016 I have a Yamaha 90 and the trim and tilt system seems to be frozen. I recently changed the dust seals on the trim cyclinders because they were leaking fluid. The trim and tilt will still not function even thought the fluid level shows full. When I hit the switch I can hear the t/t motor running so I'm pretty sure it's not an electrical issue at this point, thinking it may have something to do with the hydraulic pump. Any suggestions on what I can try next? Link to comment Share on other sites More sharing options...
hurricane Posted June 9, 2016 Report Share Posted June 9, 2016 Have you tried to let the motor down and then lift it up with the pressure relief screw on the side? I replaced the seals on my old 90 many years ago and I wanna say I had to cycle it manually like this a few times to bleed the system first. Then it could run on its own and bleed it self. But I can't be sure this was a long time ago. Link to comment Share on other sites More sharing options...
justfish Posted June 9, 2016 Report Share Posted June 9, 2016 Agree, especially if it hasn't worked at all since changing the seals and fluid. On side of motor is manual release. Use a flathead screwdriver to release pressure and pick up and down a few times. You should hear air purging. I remember having to do mine a dozen or so times, then you can get rest of air out by cycling it like normal. Link to comment Share on other sites More sharing options...
bonefisher21 Posted June 9, 2016 Author Report Share Posted June 9, 2016 I did try this but the tilt rod looks like it snapped and it is not permanently connected to the engine anymore. The engine just rests on top like it does with the trim rods, so tilting up the engine doesn't pull the tilt rod up with the rest of the motor Link to comment Share on other sites More sharing options...
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