omc tilt trim won't work

[danthern]

Anyone have suggestions for a non-responsive t/t on 235 hp omc? Did a recent engine swap and lost function. I get a click at the solenoids and 12v to the motor, (which I changed with no results). I read somewhere that there are fuses that could be the culprit, but I can't seem to locate them or find them mentioned in my shop manual. Any help is greatly appreciated.<br />Dan

 

[Boatist]

Re: omc tilt trim won't work

Danthern<br />I do not think anyone can help you until you tell us what engine you have. My guess would be the Cobra 1985 on. The stringer pre 1985 had a seperate system for tilt and trim.

 

[danthern]

Re: omc tilt trim won't work

sorry about the lack of basic info...it is a 1977 235 hp OMC/Ford 351.<br />thanks for your help<br />Dan

 

[Boatist]

Re: omc tilt trim won't work

Danthern<br />Ok if it is a 1977 it is not a cobra but still not sure if it is a stringer. If it is the stringer engine then has a system for select trim that raises the front of the engine for trim or can have manual trim where adjust a bolt at front of engine to trim. It would have a big rubber boot from the outdrive to the transom. Select Trim switch normaly up down button on throttle lever and runs a motor to turn a jack screw at front of engine.<br /><br />Tilt is a seperate switch normaly on the dash. This runs a motor inside the boat on the port side of the intermediate houseing. This motor turn a worm shaft out side the boat in the tilt clutch. The tilt clutch should be filled with motor oil not lower unit oil. This clutch turns a small gear that turn a large 1/4 circle gear mounted to the outdrive. To start with make sure the battery is charged. Take the three bolts off that holed the big 1/4 circle gear out and remove the gear. Now try your tilt up and down and see if motor runs. If it does then try lifting your outdrive by hand and see if it is froze up. If it is then pull the rubber cap off support the lower unit and remove the caps on each side. Pull away from the boat enough so can get bushing off and clean all the way around and put back together. Now see if can lift the outdrive. Put gear back on and you are all set. Zert fitting should be lubbed durning normal maintenance but I have found do not get much grese to back side of bushings.<br /><br />Fuses for tilt on my 1980 3.0 OMC stringer. Two 50 amp fuses on starbord side near the starter of motor. One supplies the volts for the solenoid contacts but if you have 12 volts on motor should be ok. Second fuse on dash next to tilt switch that supplies the volts to the solenoid pick circuit.<br /><br />If your motor is a stringer this should give you a place to start.<br />Good luck and let us know what you find.

 

[danthern]

Re: omc tilt trim won't work

Thanks so much for your detailed reply....I think I may have hit on something signifigant. As I may or may not have mentioned, I just did a motor swap. The original system was a fixed mount while the new motor was set up with selec-trim. Of course the whole front of the wiring harness is different. Should I put the original harness back on (I didn't change the outdrive) or can I in some way wire straight from the power source to the solenoids to the tilt motor etc?<br />Thank you for your obviously expert help!<br />Dan

 

[danthern]

Re: omc tilt trim won't work

By the way, I had already checked the worm gear, the tilt does move up and down freely when it is taken out.<br />Dan

 

[Boatist]

Re: omc tilt trim won't work

Danthern<br />Of course you have to have right wireing harness for it to work. For the tilt I thought you said do have 12 volts to the motor. IF one side is 12 volts and the other side is ground it should turn. Of course polarity reverses to turn the other way.<br /><br />The select trim motor works the same way. +12 on one lead and ground on the other then reverse to change directions. Can not help you with wireing.<br />Good luck sounds like your are on the right track.

 

[ndemge]

Re: omc tilt trim won't work

I've got an '82 celbrity with a 230 OMC... same tilt motor...<br /><br />I was out on the river 2 weeks ago and it would not raise..<br /><br />took the cover off the outside gear assembly, and WATER came out... on the back side, where the gear mounts, is a seal that must be tapped in... that was bad, and the gasket holding the cover on was bad. took out the clutch assembly, cleaned everything up with solvent, soaked the clutch for a few hours in motor oil to get all the water out and put everything back together.<br /><br />I would be able to hear it TRY to go, but just got a click, .. rebuilt everything in the back and now works perfect.

 

[danthern]

Re: omc tilt trim won't work

thanks for your help guys....the struggle continues. I'll keep you posted<br />Dan

 

[echozulu]

Re: omc tilt trim won't work

will you all let those stringer mounts die they are turning my fingers green

 

[danthern]

Re: omc tilt trim won't work

Got it fixed!! In this case, the motor was not lined up well and was binding, I assume as a result of having the engine out and the outdrive loose....I appreciate everyones help!<br />Dan