'74?? 85 HP 'rude Trim/Tilt won't go up

[jhthornley]

Been reading some good stuff on this site, so here goes..<br /><br />My dad has a '69?? Boston Whaler w/ a '74?? 85 hp Evinrude on it..<br /><br />His trim/tilt will go down, but not up... <br /><br />motor is on "trailering brace"... can't raise motor off it... clicking sound from electrical box in inside of transom..<br /><br />can hear normal "whir" when activate "down" trim, but just clicking when trying "up" trim.<br /><br />Read bunches about "relays" and "solenoid".. He has older manual, but can't figure out diagram.<br /><br />Separate electrical box w/ solenoid (and/or relays).. not sure what each look like, OR if this model/year motor has "relays"... doesn't appear to from manual??<br /><br />separate hydraulic fluid resevoir/pump? on outside of transom (starboard).<br /><br />Then finally, trim/tilt tubes under motor..<br /><br />Q: What do "relays" on this thing look like? Does it have any?<br /><br />Q: If it is solenoid, where does he get a replacement? What does it look like?<br /><br />any help is greatly appreciated.<br /><br />thx<br /><br />JT (on behalf of my old man)

 

[G. Patton]

Re: '74?? 85 HP 'rude Trim/Tilt won't go up

John T..... From what you've said, and the way you've described the problem and P/T/T assy, I am assuming that you have the older type P/T/T whereas the tilt/trim cylinders are outside of the engine transom brackets and the electrical motor is just to the right of the starboard transom bracket.<br /><br />On that model, 12 volts is applied directly to the electric motor via whatever type PTT switch your using. However, in the up mode 12 volts from the PTT switch is applied to a solenoid. The solenoid is energized, and full battery voltage/amperage is then applied to the electric motor (That's the clicking you hear).<br /><br />Check the connections at the solenoid. Remove, clean, and reinstall them. They might seem tight but corrosion can build up and interfere with the transfer of power. You may find (leading from the solenoid) a plastic/nylon type electrical connector. This would be the connection to the electrical motor which has been known (quite often) to become corroded and refuse to transfer power.<br /><br />Hopefully the above helps you somewhat, and you find the problem to be simply corroded/dirty electrical connections.