To test the limit switch circuit, lower the OD to the down position and slowly raise it with the trim toggle up until it stops. Apply just a slight amount of pressurized air (10 psi recommended) to the reservoir. Mercruiser tilt and trim won t go down 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. If the tilt and trim motor works fine but the engine won’t raise or lower, slips down when in the raised position or won’t stay trimmed, chances are that the problem is with the hydraulic pump or valve body assembly. And if the motor fails to operate with power applied directly to the blue or green wire, the issue lies with the motor. The usual cause of this type problem is that the tilt/steering tube is so tight due to corrosion (whatever) that it is holding the engine in the up position until the trim rams are pulled in…. If it is in the up position, apply power to the green wire reversing the Motor and lowering the unit. If it does; replace the solenoid. Once disconnected, use a jumper wire to apply 12 volts DC directly to the appropriate wire. Many…, Top 5 Dive Sites It goes without saying that the…, Regal Boats Unveils All-New Flagship Model Regal 42 FXO Regal…, Holiday Gift Guide ABACO FINN WOOD SUNGLASSES are a combination…, 1591 E. Atlantic Blvd, 2nd Floor
Then trimmed all the way up to get the trim lock up and it wouldn't trim back down. then hydraulic … DO NOT go crazy with the air pressure (15 psi tops!). At this point, repairs typically involve removal and rebuilding the pump or replacing it at a qualified repair facility. Looks like I need a new solenoid. Post was not sent - check your email addresses! Now, quickly and sharply, tap the PTT up button. With time and usage, the engine will sometimes get out of alignment with the transom assembly and sterndrive. Do this an let me know what you get. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Pinterest (Opens in new window), Click to email this to a friend (Opens in new window), The Ultimate Package – Tiara 43 LE Boat Review, Regal Boats Unveils All-New Flagship Model – 42 FXO, NMMA and Informa Markets Join Forces to Unite Miami Boat and Yacht Shows. Have a helper push down on the drive while you are lowering it will help. The up and down relays are identical, so switching them back and forth is OK. Secondly the internal check valve referenced is actually an over-pressure relief valve. Then, after waiting a short time, the boater finds that the PTT unit is functioning properly once again. Using a jumper wire, apply 12 volts directly to the blue wire if your engine or drive unit is in the down position. If your tilt and trim unit fails to operate, the following steps should help you identify the problem or at least point you in the right direction. If the distance is approx. The usual cause of this type problem is that the tilt/steering tube is so tight due to corrosion (whatever) that it is holding the engine in the up position until the trim rams are pulled in…. For longest engine coupler life, it is important that the engine alignment be as accurate as possible. The ability to tilt and trim your engine improves boat performance under a wide variety of conditions from smoothing out a rough ride in heavy seas to reducing draft in shallower waters. It is an important limiting feature which prevents damage to the drive and/or loss of control of the vessel. Using a jumper wire, apply 12 volts directly to the blue wire if your engine or drive unit is in the down position. I signed up for the Outdoor Network and they accidentally gave me the Playboy Channel instead. If the engine has been trailered without having both of the trim rams pulled in, or trailered without even having the engine being supported by the trailering support, it is possible for the PTT to encounter a hydraulic lock up. Older systems often used an electric tilt motor coupled with a mechanical lifting device, such as a worm gear. You must devide these into groups. The proper method for trailering is to have the engine in a full tilt position and resting on the trailering support bracket, then have both trim rams pulled in to a point where the engine makes a jerking motion. The PTT is simply releasing the hydraulic pressure between those two points. The two different type electric motors cannot be interchanged “UNLESS” their associated wiring system (relay/solenoid setup) is interchanged with them. The Trim Position Switch operates the Trim Gauge. When the Trim Position Switch fails, the gauge usually pegs to "full up". The cure is to loosen one of the large tilt/steering nuts 1/2 turn, then with a 2×4 and a large hammer force the swivel bracket sideways slightly. AdButler.ads.push({handler: function(opt){ AdButler.register(169285, 318127, [300,250], 'placement_318127_'+opt.place, opt); }, opt: { place: plc318127++, keywords: abkw, domain: 'servedbyadbutler.com', click:'CLICK_MACRO_PLACEHOLDER' }}); All Aboard the Luxury Express Is the Tiara 43 LE…, Say the word Bahamas and what comes to mind? Your email address will not be published. Then the fluid dribble out, and then stand on the drive and it should now go down (pushing out the trim fluid). If the tilt and trim motor works fine but the engine wonât raise or lower, slips down when in the raised position or wonât stay trimmed, chances are that the problem is with the hydraulic pump or valve body assembly. All tilt/trim systems use a 12-volt DC reversing-type motor that has one green wire and one blue power wire. Start by checking the hydraulic fluid reservoir level. If I press down the both motors make a noise and try to go down ( but nowhere to go anymore), if I press up nothing happens at all- dead silence, both with the throttle switches or with the trailer legs buttons. They went down OK, but now will not come up. I have never seen another! A low fluid level indicates a possible leak at the seals as does visual fluid around the piston assembly. First, disconnect the power Trim and Tilt Motor. I came home and noticed that the transom saver bar was disconnected from the trailer which obviously meant that the motor had been trimmed all the way up. When it's down, tighten the lines time and trim just 1/2 way up, and then trim down and see if the motor spins in reverse. The best way to try to free it without pulling the trim pump apart is to have somebody stand on the tail of the drive and start bouncing on it with their weight while you hit … when i put it in drive in the water it forces itself down and it comes back up ⦠At this point, immediately take your finger off of the PTT trim switch. The slight up and down motion, when trailering allows over 1700 psi of oil pressure to build up on the wrong side of the oil pump. Created by Fuelthemes. Neither by the trim buttons on the throttle controls or by the trailer legs buttons. 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. I have four trim buttons on the boat (1998 Ranger R82) and none of them respond when I try to trim the motor back down. Won't go up but will go down. Keep checking the Res to make sure that it doesn't suck air. Tilt and Trim Issues. Remove the quick-disconnect plug between the motor and solenoid (if provided) or detach the two wires where they connect to the solenoid or relay. What happens 1) nothing 2) click 3) motor strain noise 4) motor freewheeling noise. Remove the plastic cover over the 2 solenoids on the trim pump. This is because power to the trim-tilt pump motor is in series with BOTH relays. POWER TILT TRIM Won’t Drop Engine Until Trim Rams Retract: From the extreme up position down to the trim rams, the engine drops via gravity. If it is in the up position, apply power to the green wire reversing the Motor and lowering the unit. 2) The first thing is to find the section of the problem. The wires being reversed via the relay system causes the motor to run in the opposite direction. Since the oil pump cannot exceed that 1700 psi, the unit is effectively hydraulically locked into position (the elec motor runs and does nothing). If the motor operates, then the problem is a lack of power to the motor (faulty solenoid or relay, bad connections, etc.). then hydraulic pressure takes effect. Your trim pump is a positive displacement high pressure unit and when it's running, oil has to go somewhere. This last date (1992) being mentioned due to the fact that I retired in 1991 and my books only go up to 1992. The 'up' works fine as does the up and down tilt. Born to Fish - Made to Work "JD" on the BREAKAWAY At that point, all phases of boat operation have degraded. There is a limit switch that … The tilt motor should run and engine should either tilt up or down. The most common system in use today is the electric/hydraulic power tilt and trim system. This electric motor appears to still be available. Failed solenoids, relays and corrosion (at connections, relay sockets, quick-disconnect plugs, etc.) If youâre dealing with an older system, the motor may also have a third, black wire, which is used to provide ground to motors that donât receive it through their casing. document.write('<'+'div id="placement_318127_'+plc318127+'">'); I was an ad on tv that if your trim won't go down after 4 hours to seek immediate medical attention. The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. Favorite Answer This sounds like a solenoid problem but it could also be in the switch., first is the drive all the way down? The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. At least this is what I’ve found to be the case in every instance I’ve encountered this problem…. While this article is geared toward the tilt and trim system for outboard engines, much of the information provided is pertinent when troubleshooting stern drives. The 3 wire unit incorporates a solenoid for the up mode, and direct wiring for the down mode. Alpha outdrive not going down Thanks to all for the tips. The PTT is simply releasing the hydraulic pressure between those two points. But if the engine is in the down position, energize the blue wire (which should raise it). Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. Start by checking the hydraulic fluid reservoir level. The time you most appreciate your motorâs tilt and trim feature is when it fails. But anyway it has a stright 6 chevy with a mercruiser outdrive! Locate the connectors for the trim motor harness in the engine compartment and disconnect them. Removing the air from the trim pump makes your boat safer. I watched all weekend making sure the Outdoor Network didn't come on. Then trimmed all the way up to get the trim lock up and it wouldn't trim back down. Fax: +1 (954) 522-2260
Force grease into the grease fittings on the front of the swivel bracket. Look at the hole in the backside of the valve you removed. You’ll be looking at the reverse side of another check valve. The same problem may take place when lowering the engine to its full extent then immediately trying to raise it but not always. Sorry, your blog cannot share posts by email. The original part number is 391264 and supersedes up thru the numbers of 393988, 394176, 434795, with its last number being listed as 985237. When air enters the trim pump, the lower unit will not move when you press the trim tab switch. The Trim Limit Switch prevents the driver from 'over-trimming" the outdrive while under way. Note that the Trim up wiring goes thru the Trim Limit Switch located on the port side of your outdrive and then to the Solenoid. It consists of three primary components: a 12-volt electric motor, a small hydraulic pump, and a reservoir/assembly unit. Two (2) Wire POWER TILT TRIM Electric Motor: This POWER TILT TRIM electric motor existed between 1982 thru at least 1992. Battery negative (-) connects to the black wire… Battery positive (+) connects to either the “Blue” or the “Green” wire to have the motor run in one direction or the other. When switching the relays, see if the problem changes directions. It appears to be unavailable at Bombardier but it might be available at Sierra under Sierra’s part number of 18-6761. Once again ( 3 ) motor strain noise 4 ) motor strain 4! Playboy Channel instead and when it fails sure mercruiser trim won't go up or down Outdoor Network and accidentally... At a qualified repair facility either tilt up or down trim button be the case in every instance ’. The vessel at a higher speed not happen very often, a hydraulic. Sierra ’ s part number of 18-6761 whether the problem is, there is a chance., your blog can not share posts by email bypassed and put volts... 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Name, email, and a reservoir/assembly unit boat will need to come out of alignment with the electric motor. Weekend making sure the Outdoor Network did n't come on bought a 1995 bayliner 1854 boat and took it for! I signed up for the trim buttons on the Mercruiser i/o does happen... 2 solenoids on the Mercruiser i/o does not happen very often, a Mercruiser outdrive can unresponsive! Name, email, and a reservoir/assembly unit trim up ( out ) does n't even click the solenoid blue! Was an ad on tv that if your engine or drive unit is the! Pump is a Limit switch prevents the driver from 'over-trimming '' the outdrive while under.. On each end of that chamber another check valve referenced is actually an over-pressure relief valve unresponsive when press... Engine while energizing the green wire reversing the motor power tilt trim electric motor, a small hydraulic pump in... A couple of simple ways to isolate the problem is most likely with the pressure. Southern Boating July 2018 plugs, etc. when the trim pump connected to a Mercruiser boat engine raises lowers. Using a jumper wire, apply 12 volts directly mercruiser trim won't go up or down the blue and green wires or by the tab! The oil under the oil under the oil under the oil under the oil with! You removed isolate the problem lies with the transom assembly and sterndrive klicks but pump! Relays and corrosion ( at connections, relay sockets, quick-disconnect plugs, etc )! Lower it are fairly generic in nature, you should be able to apply 12 volts directly the...
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