1990 90hp tilt trim headache

[philliphardin]

hey all, i could really use some collective expertise on a ongoing tilt trim puzzle. I have a 1990 90 hp power tilt / trim that will go down but not up. So far I have check the motor, which is getting power and turning, relays are good and the ram is good. i can hear the motor turn but never sounds like it is pressurized. I think I have narrowed it down to a check valve problem. however, this is where my knowledge runs thin. The valve body looks to be in good shape but would like to see a diagram on how these check valves are support to be arranged. Anyone have a diagram or know where I can get a valve body rebuild kit? it is a 4 line system with a two wire motor. Any and all help would be greatly appreciated.

 

[baboon bum]

Re: 1990 90hp tilt trim headache

try changing the relays around if your down one works then try it on your up circuit just swap them over .also take your moter out and put it directly onto a battery if it spins then change the wires around on the battery and see if it still spins just to make sure its spinning both ways