I have a 1996 Force 120 outboard that had a hydraulic leak out of the top of the trim cylinder where the trim rod comes out of the cylinder. I bought a cylinder rebuild kit and replaced the o-rings in the trim cylinder. Re-assembled, topped off with trim fluid, ran the trim up and down several times, and topped the fluid off again. No more leaks, and everything was working great.
Took it to the lake and after about 30 minutes the trim refused to go up. Got it home and re-checked the fluid level. When I released the fluid fill plug, it had quite a bit of air pressure expel out and the fluid seemed a bit watery. The fill plug threads were shot, so I ordered a new one and installed. Engine trims down fine, but won't trim up. When I push the trim up button the motor runs, but the cylinder doesn't move.
Disassembled the cylinder last night, but couldn't identify anything unusual. O-rings all seem to be fine. The only o-rings I haven't replaced are the ones that go in between the valve body and cylinder. At this point I'm not sure what the issue could be. Any thoughts?
Took it to the lake and after about 30 minutes the trim refused to go up. Got it home and re-checked the fluid level. When I released the fluid fill plug, it had quite a bit of air pressure expel out and the fluid seemed a bit watery. The fill plug threads were shot, so I ordered a new one and installed. Engine trims down fine, but won't trim up. When I push the trim up button the motor runs, but the cylinder doesn't move.
Disassembled the cylinder last night, but couldn't identify anything unusual. O-rings all seem to be fine. The only o-rings I haven't replaced are the ones that go in between the valve body and cylinder. At this point I'm not sure what the issue could be. Any thoughts?