The power trim motor is separate from the motor. The Trim Position Switch operates the Trim Gauge. Down doesn't work. Put a new solenoid on it and that didn't help. Bypassed and put 12 volts on the green connect to the motor. when attempting to go down they should reverse. Yesterday on the water the trim up and down worked perfectly, but then i went out later in the evening and the trim up would not work? What happens 1) nothing 2) click 3) motor strain noise 4) motor … The Black wire works as a Ground on power Trim and Tilt Motors that don’t ground thru the case. I think there just leaking, … I was testing the tilt/trim and trailer switches on my I/0 (1999 Mercruiser Alpha One on 4.3L)this past weekend. MAREEYA SHOP Set of 4 Genuine MerCruiser Bravo Power Trim Cylinder Pin Bushings 23-807073 Fits: Bravo 1 2 3 X XR XZ 4.5 out of 5 … It is an important limiting feature which prevents damage to the drive and/or loss of control of the vessel. The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. This was my first crack at using a website chat for help. We have the same problem on our Trophy w/ A1 outdrive, we just haven't fixed it yet because we just sue the trailer button to go up. Cleaned the points on the trim limit and that didn't work either. Go to the trim/tilt pump assembly and make sure the purple wire connector (single wire) and the blue wire connector two blue wires on one side of the connection are not … 3) Push the up or down trim button. When the blue wire is energized it raises the Motor or drive unit up. The Outdrive does go up to trailer position and will go down. They worked before fine , till I used the trailer legs up button during Pottahawk boat weekend. The main concern with bypassing the switch is if you are operating the boat and your trim-up switch sticks ( or your not paying attention ) you can lift the outdrive … I trim it up with the middle botton (up). But I tried and it made no difference on … I just bought a 1995 bayliner 1854 boat and took it out for the first time. Trim won't go up! ... power trim will not go up … Any suggestions … The trim up(out) doesn't even click the solenoid. Mercruiser Trim wont go up. The Outdrive won't go all the way down. Although the trailer mode trim … This is an issue for low speeds. The Trim Limit Switch prevents the driver from 'over-trimming" the outdrive while under way. it sounds like it is a relay. Now my outdrive trim will not go up any more. I lower it with the down button. Occasionally it wouldn’t move, but after a few minutes it would go up. Up won’t do anything, I think it’s just all the way up. Now however, I can only do up trim. The motor runs but then nothing. Worked good. When switching the relays, see if the problem changes directions. When I try to trim down I hear the pump run but the drive won’t move at all. I read doing some Googling that the Trim Limiter might need to be adjusted. With the trimming inactive, you cannot control the way the boat planes or adjust its bow height in rough water. Answer Save. Mercruiser tilt and trim won t go down. If you google " bypassing mercruiser limit switch" you will come across several articles and diagrams that may help. The down still works and so does the trailer up button. We went to get our boat out after a few years and the trim wont go up, it goes down perfectly fine and goes up to a little over half way and then just stops. The gauge seems to be a little off as well... anyone have ideas of what it would be? Could be another issue maybe switch. If you get to the ramp and the motor is halfway up, but won’t go either way when you press the trim switch, you might have a corrosion build-up … Looks like I need a new solenoid. 22 +/- 1/4 inches, then the trim limit switch is adjusted properly and the commander trim toggle switch is working in the up/down mode. How do we know if its the motor, the relay, solonoid, etc? Wanted to take it out tomorrow:/ Answer Save. It has twins 305's with alfa 1. But if I leave [the 1978 Mercury motor] sitting for more than 20 seconds without using [the trim], [the engine] won't move, just click. This is because power to the trim-tilt pump motor is in series with BOTH relays. Could it be a bad switch or somthing? The up and down relays are identical, so switching them back and forth is OK. When the Trim Position Switch fails, the gauge usually pegs to "full up". The trim down solenoid klicks but no pump run. Neither by the trim buttons on the throttle controls or by the trailer legs buttons. RE: Trim won't go down.....help! "Hello all, i have a 2004 20ft bayliner with a mercruiser 3.0 alpha one gen 2 sterndrive. The guy who had it before me hot wired the trim right to the battery so … Your trim pump is a positive displacement high pressure unit and when it's running, oil has to go … We have a Four Winns Freedom 170 with an OMC Cobra 2.3 Motor. No noise at all. Mercruiser bravo 3 The stern drive is all the way up now. We run it all the way down, so … We must have played with it for 30 minutes to try and get it go down so we could at least run up and down the river a few times. Secondly the internal check valve referenced is actually an over-pressure relief valve. (the tilt motor has power and I can hear it run) What are the potential cause(s) of this and how is it fixed? when attempting to go up, one wire should be positive and the other negative. If the distance is approx. When the outdrive trim system is inoperative, the only alternative is to lift the Mercruiser outdrive manually so that no damage occurs when retrieving the boat from the water. They went down OK, but now will not come up. The lower unit raised all the way up but would not go down and it is still stuck. I hear clicks when I try to go up and down so I know my solenoids are good. i am confused to why the trim down and trailer up … Ghost, the outdrive won't raise when the boat is moving because the force of the propeller is pushing it forward. ... test there. You must devide these into groups. Now the bad news. First of all the trim limit sender is in the trim up circuit only, and will never prevent trim down even if you cut the wires off the thing. Over time, the power tilt and trim motors can experience corrosion, especially if you run your boat in saltwater. One way to prevent this is to keep the trim rams fully retracted when not in use. 2) The first thing is to find the section of the problem. ? While this is a simple operation for two people, one person cannot do it without the risk of personal injury or damage to the boat. Previously, after boating, we would switch the trim up to load onto our trailer. No external reverse lock. At first the trim went down fine and would move up by just using the trim up button on the throttle, but when i reloaded it the trim up button didn't bring the outdrive up, so i had to use the trailer button to bring the outdrive all the way up. Power Trim Tilt Switch Fits for Mercury Mariner Outboard Models Box, Boat Assembly Replacement OEM Number 87-18286A43 18286A43, 1.31.20.7 inch Cable Length 17.7 inch Metal and Plastic Black 5.0 out of 5 stars 3 Not even a click. IMPORTANT: The engine outdrive trim tilt pump motor will work only if BOTH relays are connected. I can tap on the top of the [unclear] with something hard and it will work. Been using the power trim while out of the water and then we back it down into the water and the power trim won't go up or down. had the same thing happen to me, picked one up at a merc dealer for about $15, installed myself in about 10 minutes. why won't my power trim go down on my Bayliner 1950, 3.0 Mercruiser Alfa 1? The new pump is connected straight to the trim rams now. Only thing I've done is take the batter off and put it back on. The motor seems to run fast too(no load) I have oil in tank. Re: Mercruiser I/O wont trim up, trailer works, help? The three wire power Trim and Tilt Motors have an additional Black wire as well. This last time it just won’t go back up. I do have the three button control at the helm. All power Trim and Tilt Motors come with one blue wire and one green wire. When air enters the trim pump, the lower unit will not move when you press the trim tab switch. 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