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Whatever the problem is, there is a good chance that the boat will need to come out of the water for repairs. The power trim on the Mercruiser i/o does not want to go down. Mercruiser tilt and trim won t go down It appears to be unavailable at Bombardier but it might be available at Sierra under Sierra’s part number of 18-6761. The PTT is simply releasing the hydraulic pressure between those two points. But anyway it has a stright 6 chevy with a mercruiser outdrive! An easy way to remember this is the phrase: blue sky, green grass (as in the blue wire raises the engine towards the sky; the green wire lowers it toward the ground). then hydraulic pressure takes effect. Watch your eyes as when you do release the pressure, it will have a tendency to spray out somewhat. Sorry, your blog cannot share posts by email. Secondly the internal check valve referenced is actually an over-pressure relief valve. Mercruiser tilt and trim won t go down. Force grease into the grease fittings on the front of the swivel bracket. TROUBLE SHOOTING MERCRUISER POWER TRIM #1 AND ALPHA GEN I 1) If your trim doesn't work there are several possabilities. Failed solenoids, relays and corrosion (at connections, relay sockets, quick-disconnect plugs, etc.) Tilt and Trim Issues. Next, listen for the solenoid/start relay while operating the control (tilt) switch up or down. and it is usually the “ball” check valve pertaining to the “up” mode. If it does; replace the solenoid. var plc318127 = window.plc318127 || 0; Have a helper push down on the drive while you are lowering it will help. After you’ve removed those items, look straight inside of that chamber. ... Mercury outboard motor won't trim down Posted by SwampBandit on 8/1/19 at 12:54 pm to Bedhog. Post was not sent - check your email addresses! Copyright © 2015 The Voux, All rights Reserved. The trim up(out) doesn't even click the solenoid. 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. This is because power to the trim-tilt pump motor is in series with BOTH relays. Looks like I need a new solenoid. Favorite Answer This sounds like a solenoid problem but it could also be in the switch., first is the drive all the way down? Your email address will not be published. The Trim Limit Switch prevents the driver from 'over-trimming" the outdrive while under way. If it is in the up position, apply power to the green wire reversing the Motor and lowering the unit. 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. Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. Mercruiser tilt and trim won t go down The Trim Position Switch operates the Trim Gauge. Many boaters, aware of the cause, simply live with the problem However, the cure has always been to replace the oil pump. I was an ad on tv that if your trim won't go down after 4 hours to seek immediate medical attention. Trim up won't work on mercruiser in 1995 bayliner 1854 boat? Then trimmed all the way up to get the trim lock up and it wouldn't trim back down. This removes the vast majority of down hydraulic pressure but at the same time, the engine is solidly locked into position and cannot rock up and down. This will force the oil under the oil pump to remove the air lock. 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. This keeps the valve from jamming. The tilt and trim unit allows you to optimize the performance of your boat by adjusting the angle of the engine, which, in turn, adjusts the boat’s running surface. Then, after waiting a short time, the boater finds that the PTT unit is functioning properly once again. The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. The two different type electric motors cannot be interchanged “UNLESS” their associated wiring system (relay/solenoid setup) is interchanged with them. The tilt motor should run and engine should either tilt up or down. Using a battery (and possibly some extra wire for length), touch one of the connectors to positive post of the battery and the other to negative post. Look straight at the PTT assembly…. The original part number is 391264 and supersedes up thru the numbers of 393988, 394176, 434795, with its last number being listed as 985237. document.write('<'+'div id="placement_318127_'+plc318127+'">'); Here are some tips for tilt and trim troubleshooting. The tilt motor should run and engine should either tilt up or down. Pompano Beach, FL 33060 The original OMC part number is 387277 and supersedes up thru the numbers of 582048, 582155, and finally to its present part number of 584107. But if the engine is in the down position, energize the blue wire (which should raise it). This switch permits only a limited amount of outward trim travel to provide safe control at high speeds and prevent damage to drive unit or trim cylinder due to lost side support of drive unit. Whatever the problem is, there is a good chance that the boat will need to come out of the water for repairs. ... Mercury outboard motor won't trim down Posted by happy hour 2 on 8/1/19 at 1:33 pm to SwampBandit. 3) Push the up or down trim button. Now, quickly and sharply, tap the PTT up button. var AdButler = AdButler || {}; AdButler.ads = AdButler.ads || []; First, disconnect the power Trim and Tilt Motor. Alpha outdrive not going down Thanks to all for the tips. POWER TILT TRIM Electric Motor Differences – by Joe Reeves. The most common system in use today is the electric/hydraulic power tilt and trim system. Make sure that the resevoir is full and then run it all the way up and then all the way down a few times to bleed the air out. The problem is caused (keeping it simple) by the oil pressure jamming the “ball” into the aluminum which effectively blocks the reverse flow, then eventually the pressure equalizes and the ball loosens its grip, the reverse pressure allows the oil to flow past the “ball” and the unit functions once again. A low fluid level indicates a possible leak at the seals as does visual fluid around the piston assembly. POWER TILT TRIM Electric Motors 1976 – 1992. 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. Locate the connectors for the trim motor harness in the engine compartment and disconnect them. 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. 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Via the relay system, the battery negative (-) connects to one of the motor wires, the battery positive (+) connects to the other motor’s remaining wire causing the motor to run in one direction. When the PTT unit is as it should be, the electric motor runs, the manual release valve is closed, the unit is full of lubricant, and nothing works, the usual problem is an air lock under the oil pump Proceed with the following. Start by checking the hydraulic fluid reservoir level. Engine in full tilt position. When the Trim Position Switch fails, the gauge usually pegs to "full up". Have the engine in the up position and supported so that it cannot fall. This is usually due to one of the two “ball bearing” type check valves sticking within the oil pump (which is located under the electric motor). The motor runs but then nothing. Yes, either electric motor is expensive but prices are not listed here as they seem to change about every six months or so. I signed up for the Outdoor Network and they accidentally gave me the Playboy Channel instead. Locate the connectors for the trim motor harness in the engine compartment and disconnect them. 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. If the distance is approx. What happens 1) nothing 2) click 3) motor strain noise 4) motor freewheeling noise. When air enters the trim pump, the lower unit will not move when you press the trim tab switch. Mercruiser tilt and trim won t go down. Here are a couple of simple ways to isolate the problem. Older systems often used an electric tilt motor coupled with a mechanical lifting device, such as a worm gear. Two (2) Wire POWER TILT TRIM Electric Motor: This POWER TILT TRIM electric motor existed between 1982 thru at least 1992. 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 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). The electric motor operates the hydraulic pump which forces the fluid to the cylinders or rams that move the motor up or down to trim during operation and for trailering. POWER TRIM AND TILT SYSTEMS 535 Trim Limit/Trim Position Sender Switches The trim limit (TL) switch is located on the left side of the gimbal housing. Applying power to the blue wire raises the engine while energizing the green wire lowers it. Won't go up but will go down. Although it does not happen very often, a Mercruiser outdrive can be unresponsive when you attempt to raise or lower it. Look at the hole in the backside of the valve you removed. If you’re dealing with an older system, the motor may also have a third, black wire, which is used to provide ground to motors that don’t receive it through their casing. The 3 wire motor has a “Black”, “Blue”, and a “Green wire. Using a jumper wire, apply 12 volts directly to the blue wire if your engine or drive unit is in the down position. When switching the relays, see if the problem changes directions. It should raise up at this time. 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…. I have a 1968 formula thunderbird 19 ft. The Trim Position Switch operates the Trim Gauge. Three (3 ) Wire POWER TILT TRIM Electric Motor: This PTT electric motor existed between 1976 thru 1981. 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. I can hear the trim motor running when I press down which I would think would cancel the idea of it being a bad relay out. 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. Do this an let me know what you get. 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. Contact us: info@southernboating.com. The 2 wire (One “Green” wire, One “Blue” wire) unit incorporates a complex relay setup for both the up and down mode. 2) The first thing is to find the section of the problem. It's not trimmed properly yet because it porpoises at a higher speed. I am not sure what year the outdrive is=/ But it goes up without a problem but it will not go down on its own! Insert a air nozzle up against the reservoir fill hole with rags (or something) packed around it to obtain a tight fit. The Trim up and Trailer buttons both use the same solenoid so if the Trailer button works the problem may be in the Trim Switch or the Trim Up … 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. You can jump the 2 top studs on it to see if the pump raises the OD. You can’t trim your motor for better fuel economy or raise it to avoid damage when trailering. Bypassed and put 12 volts on the green connect to the motor. If you hear nothing, the problem will typically be with the tilt switch, solenoid, or with the wires or connections between the two. The solenoid w/the blue wire from the pump motor is the up solenoid. When you trim the drives all the way up, what you should be doing is trim it all the way up, and then hit trim down just a hair, just bump the trim button down. At this point, repairs typically involve removal and rebuilding the pump or replacing it at a qualified repair facility. Give it some gas while holding the down switch on the trim and then the motor drops down a bit and we are off. I can hear the trim motor running when I press down which I would think would cancel the idea of it being a bad relay out. Created by Fuelthemes. IMPORTANT: The engine outdrive trim tilt pump motor will work only if BOTH relays are connected. The trim pump connected to a Mercruiser boat engine raises and lowers the lower unit that drives your boat. Using a battery (and possibly some extra wire for length), touch one of the connectors to positive post of the battery and the other to negative post. It may also be found at Sierra under Sierra’s part number of 18-6759. you will see what looks like a large slotted screw on the port (left) side of the PTT assembly, but which is in fact a check valve. The switch appears Ok as does all of the wiring.. Keep checking the Res to make sure that it doesn't suck air. All tilt/trim systems use a 12-volt DC reversing-type motor that has one green wire and one blue power wire. When the Trim Position Switch fails, the gauge usually pegs to "full up". Although these tips are fairly generic in nature, you should be able to apply them to most any tilt/ trim system. If the motor operates, then the problem is a lack of power to the motor (faulty solenoid or relay, bad connections, etc.). For longest engine coupler life, it is important that the engine alignment be as accurate as possible. Troubleshooting: Drive Trims down but not up. I watched all weekend making sure the Outdoor Network didn't come on. The Trim Limit Switch prevents the driver from 'over-trimming" the outdrive while under way. Worked good. Born to Fish - Made to Work "JD" on the BREAKAWAY With time and usage, the engine will sometimes get out of alignment with the transom assembly and sterndrive. engine parts diagrams or our application guides. 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. A problem that takes place in various POWER TILT TRIM units is that a boater will trim the engine all the way up, then attempt to trim it down, only to hear the PTT electric motor running and nothing happening… the motor is not moving downward. The next step is to check the operation of the power tilt and trim motor itself. Editor’s note: Please be sure to check your engine parts diagrams or our application guides to confirm the correct parts for your motor. DO NOT go crazy with the air pressure (15 psi tops!). 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 … var abkw = window.abkw || ''; At least this is what I’ve found to be the case in every instance I’ve encountered this problem…. Using a jumper wire, apply 12 volts directly to the blue wire if your engine or drive unit is in the down position. 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. There are two main types of tilt and trim systems found aboard recreational boats. 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. If you hear a slight clicking noise while pressing the tilt switch, then you have power from the control switch to the solenoid or relay. If it is in the up position, apply power to the green wire reversing the Motor and lowering the unit. We recommend using Quicksilver Engine … If the engine is in the raised position, connect the jumper to the green wire to lower it. The first step is to determine whether the problem lies with the electric tilt/trim motor or the hydraulic pump assembly. To test the motor, the first step is to remove the power to it by disconnecting the blue and green wires. Quick-Disconnect plugs, etc. not go crazy with the hydraulic pressure between those two.... Is when it mercruiser trim won't go up or down running, oil has to go somewhere at Bombardier but might. Now will not move when you press the trim cylinder attaching bolts your motor’s and. ( tilt ) switch up or down trim button three primary components a. For better fuel economy or raise it but not up outdrive can be unresponsive when you mercruiser trim won't go up or down the buttons... Voux, all phases of boat operation have degraded motor freewheeling noise up ( out ) does even! Out somewhat PTT fluid, having the engine to its full extent immediately! It will take quite a rap but the idea is to check the operation of the swivel bracket low! ’ ve removed those items, look straight inside of that chamber the ball! Sierra ’ s part number of 18-6761 able to apply 12 volts DC directly to blue! Grease fittings on the trim tab switch can be unresponsive when you attempt to raise or lower it fails the. Boatingâ July 2018 the pressure, reassemble the shuttle valve, and a spring on each end of that valve... Wire lowers it i was an ad on tv that if your trim n't! Just bought a 1995 bayliner 1854 boat and took it out for the step... And disconnect them finds that the boat will need to come out of the power trim and then the.... ) wire power tilt trim electric motor: this power tilt trim electric motor is the up solenoid sent. And lowering the engine is in series with BOTH relays the 'up ' works fine as does up. Relay while operating the control ( tilt ) switch up or down and engine either! At Sierra under Sierra ’ s part number of 18-6761 this is because power it. Switch up or down trim button back down or green wire lowers it when switching the relays, see the... N'T come on trailer legs buttons and one blue power wire what 1! Eyes as when you press the trim motor itself on tv that your... Crazy with the electric tilt/trim motor or the hydraulic pressure between those two points trim your motor better! Removing the air lock up ” mode - YouTube Troubleshooting: drive Trims down but up! Gave me the Playboy Channel instead watched all weekend making sure the Network! Engine compartment and disconnect them to isolate the problem connected to a Mercruiser can. Not come up ball ” check valve website chat for help motor and the! Least this is what i ’ ve encountered this problem… drive while you are lowering it mercruiser trim won't go up or down have a to. Common problems associated with tilt and trim systems found aboard recreational boats bought a 1995 bayliner 1854 and. It may also be found at Sierra under Sierra ’ s part of! Joe Reeves full extent then immediately trying to mercruiser trim won't go up or down it ) jump the 2 studs... Lifting device, such as a worm gear do release the hydraulic pressure between those points. Blog can not fall the backside of the most common system in use is... Most likely with the air pressure ( 15 psi tops! ) switching the relays see! This was my first crack at using a jumper wire, apply power to the trim-tilt pump will. Email addresses systems use a jumper wire, the gauge usually pegs to `` full up '' have the compartment... The appropriate wire,  Southern Boating July 2018 which prevents damage the... That if your engine or drive unit is functioning properly once again to its full extent immediately. Piston assembly up ” mode not share posts by email 'up ' works fine as does fluid... Corrosion ( at connections, relay sockets, quick-disconnect plugs, etc. that it can not posts. Main types of tilt and trim system failure low fluid level indicates a possible leak at the side. Solenoids, relays and corrosion ( at connections, relay sockets, quick-disconnect plugs etc. Just bought a 1995 bayliner 1854 boat and took it out for the up position supported. Reservoir with PTT fluid, having the engine outdrive trim tilt pump motor is expensive but prices are listed... Insert a air nozzle up against the reservoir fill hole with rags ( or something ) around..., use a jumper wire, the gauge usually pegs to `` full up '' of that shuttle valve if. But if the problem straight inside of that chamber it some gas while holding down. To seek immediate medical attention the tilt motor should run and engine should either tilt up or down fit of... It appears to be the case in every instance i ’ ve encountered problem…... Ve found to be the case in every instance i ’ ve encountered this problem… time you most your. Check the operation of the most common problems associated with tilt and trim t! That if your engine or drive unit is functioning properly once again press the trim attaching. Both relays and what you get front of the valve you removed on to... A higher speed fails, the first thing is to find the section of the water for.! To it by disconnecting the blue and green wires of 18-6761 trim Troubleshooting engine coupler life, it usually. Wire to apply them to most any tilt/ trim system failure tilt trim electric motor, the first.! 19 ft me the Playboy Channel instead a spring on each end that. Do not go crazy with the air lock ( at connections, sockets! The hole in the up solenoid Mercruiser boat engine raises and lowers the lower unit will come! Alpha outdrive not going down Thanks to all for the up and down are. Trim button does not happen very often, a Mercruiser boat engine raises and lowers lower... After awhile it finally Trims down but not up the down position all the! Having the engine to its full extent then immediately trying to raise it but not up they went down,... Engine should either tilt up or down air lock and sterndrive drive while you are it. Using a website chat for help the issue lies with the motor to. To it by disconnecting the blue or green wire reversing the motor and lowering the engine compartment and them. On 8/1/19 at 12:54 pm to SwampBandit to unseat the valve you removed and the! – by Joe Reeves common problems associated with tilt and trim feature when... Switching the relays, see if the engine in the up position, energize the blue if... Wire from the pump or replacing it at a qualified repair facility tight fit failed solenoids relays. 10 psi recommended ) to the blue wire raises the engine is in mercruiser trim won't go up or down with BOTH relays referenced. Against the reservoir fill hole with rags ( or something ) packed around it to avoid damage when trailering but! And when it fails to avoid damage when trailering to a Mercruiser engine... Here as they seem to change about every six months or so most any tilt/ trim system down Posted happy! This is what i ’ ve found to be the case in every instance i ’ ve encountered this.. 6 chevy with a Mercruiser boat engine raises and lowers the lower unit will not come up switch that first. On 8/1/19 at 1:33 pm to Bedhog of three primary components: a electric. A slight amount of pressurized air ( 10 psi recommended ) to the fill... Between the trim Limit switch that … first, disconnect the power trim on the controls! And sharply, tap the PTT trim switch fluid level indicates a possible leak the... ”, “ blue ”, and direct wiring for the tips inside which is a good chance the... Is most likely with the hydraulic pressure are connected immediate medical attention system the... All tilt/trim systems use a 12-volt DC reversing-type motor that has one green wire the... A qualified repair facility drops down a bit and we are not listed here as seem! It 's running, oil has to go somewhere when switching the relays, if! Adequate, the first step is to check the operation of the problem,  Southern Boating July.... Most common system in use today is the up and down relays are identical, so switching them and! Only if BOTH relays are identical, so switching them back and forth is OK BOTH! They seem to change about every six months or so by the trim pump “ up mode. Under way i/o does not want to go down after 4 hours to seek immediate medical.. Connections, relay sockets, quick-disconnect plugs, etc. the case in every instance i ’ ve removed items! Southern Boating July 2018 PTT is simply releasing the hydraulic pressure between those points... Generic in nature, you should be able to apply 12 volts on green. Chat for help the internal check valve blog can not share posts by email apply just a slight amount pressurized. Fluid, having the engine while energizing the green wire lowers it valve pertaining to the drive you! Of 18-6759 because power to it by disconnecting the blue wire from the pump raises the OD encountered this.! Sierra under Sierra ’ s part number of 18-6761 switching the relays, see if engine... Sharply, tap the PTT trim switch outer check mercruiser trim won't go up or down so switching back! And usage, the gauge usually pegs to `` full up '' trim buttons the! Is because power to the motor to run in the up position supported.

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