Power trim tilt manual release valve for mercury 8442a2, 893929a01. Apr 30, 2014 the yamaha owners manual suggests you perform standard maintenance on your power tilt and trim after the first 20 hours, then every 100 hours or annually for the life of the motor. Disconnect the trim limit switch bullet leads from the trim control harness inside the boat see figure 1or figure 3. Im assuming i need to replace the oring and other seal at screw. This valve also uses viton seals to avoid tearing when using this relief valve this is another major upgrade. Its easy to do, and most times just involves a good visual and a fluid level inspection. This 316 stainless mercury manual release valve works on most all mercury trim tilt units but be sure to match up part numbers before ordering.
Do not unscrew the relief valve completely as salt water will be introduced into the trimtilt hydraulic system and you will probably lose the screw. The mariners warehouse yamaha 2 cycle oil tank bracket is made of 12 gauge 316 heavy duty steel. If you turn it counterclockwise with the engine in the tilted position, it will take pressure off the hydraulics of your tilttrim motor and allow gravity to. Stainless mercury power trim tilt manual release valve. The manual release valve is the joker, the trickster of the tilt and trim system. I would expect those rams offer a far greater resistance, and the weight leverage of the engine becomes significantly less. Mercury power trim manual release valve stuck the hull truth. Before loosening the manual release valve, make sure all persons are clear of engine, as engine will drop to full down position when valve is loosened. Marine mercury power trim tilt manual release valve oring.
Buy upgraded stainless mercury power trim tilt manual release valve 186751 93929a01, 8442a2, 8442a1, 811618a1, 811618, 812843a1. Johnson evinrude hydraulic tilt trim motor diagrams, oring seal replacement kits, and repair manuals. Page 2 this service manual has been written and published the same locations whenever possible. If not, remove and replace the coupling on the trim motor. The hull truth boating and fishing forum view single post. Need to find the manual release valve on outboard motor, to. A power trim tilt manual release valve for mercury 30300 hp outboards 893929a01, 186751, 8442a2. Your messed up manual release valve might be the reason for the trim not working, if it is stuck in the open position.
Power trim and tilt systems west virginia university. If the problem persists, install an oring kit in the cylinders. All potential problems with the system may result from the manual release valve not being closed, or being partially closed, so make checking this valve the first step you take when going after a problem with the tilt and trim system. Is this something involved or do i just disconnect the tilt from motor then tilt out unit enough so i can access screw and cclip. Page 1 service manual models 40505560 with serial numbers united states 0g531 and above belgium 09974454 and above 1997, mercury marine 90852572r1 january 1998 printed in u. Im assuming i need to replace the oring and other seal.
Outboard trim manual release screw 2 different power trim. Meter should show continuity with drive unit in down position. Marine mercury power trim tilt manual release valve oring 8442a 2 893929a01. The manual release for yamaha and evinrude outboards is located on the left side, midway down the transom bracket. Power tilt and trim maintenance makes a difference yamaha. If yes then we need to remove the manual release valve and inspect the seal on the end of the valve. Mercury 30 to 300hp force power trim tilt manual release. Loosen the manual release valve then lift and lower the leg manually. Buy upgraded stainless mercury power trim tilt manual release valve 18 6751 93929a01, 8442a2, 8442a1, 811618a1, 811618, 812843a1. Testing under thrust to see if they give way would be my test for that valve.
Returns in new items accepted in 14 days only if they have not being installed and are in similar condition as when they were shipped. Power tilt trim relay for mercury mariner 75 80 90 100 hp 75hp 80hp 90hp 100hp. The power tilt should be used to lift and support the motor, and the manual release valve must be closed before disengaging the trim tilt lock. Outboard power trim manual release screw how it works and where is it. Mercury power trim tilt manual release valve 8442a 2 five star marine 316 stainless. Johnson tilt trim hydraulic cylinder, evinrude hydraulic fluid on outboard trim tilt motor, evinrude tilt trim seal replacement kit, johnson trim tilt orings, evinrude tilt and trim system orings and seals, johnson hydraulic fluid pressure. The engine will lower a little in the course of a day. I can see fluid very slowly trickling out of the screw hole where the release screw is.
Emergency relief valve your pt actuator features a emergency relief valve that will allow you to manually raise and lower the tilt and trim if it becomes necessary due to power loss or actuator malfunction. Manual relief valve 87 tilt lock lever 88 trim tab adjustment 89 motor protection system engine oil pressure and. As far as i have experienced that manual relief valve also releases the trim rams. Johnson power trim leaking at manual release valve.
Sep 08, 2018 if yes then we need to remove the manual release valve and inspect the seal on the end of the valve. If you have the ptt unit that has two trim rams, one tilt cylinder, and that manual release valve is indeed within a hole in the lower side of the. I have a leaky release screw that is used to manually trim the engine on. Where the by the service department of mercury marine to aid fasteners are not satisfactory. What mostly causes a slow leak down is the manual relief valve and a trick you can try is to loosen the screw and with it that way cycle the power trim up and down a few timesthe leg will not raise but it could have a bit of debris in the system and this could help it dislodge. If the valve is good then there isnt anything else you can do the tilt unit will have to be taken to a dealer and they will have to remove the valves and test them. The remote power trim and tilt switch controls the direction of the electric motor. The power trim switch located on the tiller handle or remote control box is used to tiltup or down the outboard motor. Then stick the screwdriver into the plastic valve and. The tip of the broken one can be removed ive done alot of them. Mercury outboard side mount remote control box power trim tilt 8 pin 881170a15.
With power trim installed, the outboard can be raised or lowered manually by opening the manual release valve 3 to 4 turns counterclockwise. Volvo penta exploded view schematic power trim system tsk. Power trim tilt manual release valve for mercury 8442a2, 893929a01, 186751. Mar 31, 20 there is no manual release valve on this unit. Tilt up tilt rod cylinder upper chamber piston cylinder lower chamber manual valve oil. That was one reason i asked about what happens when you operate the tilt trim switch. Power tilt trim oil pump air lock 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. This emergency relief valve is a 14 hex screw head located at the bottom of the actuator toward the port side fig. How to remove broken off trimtilt plastic release valve. Our oil tank brackets are made of 316 heavy gauge stainless.
Engine leaks down tilt, not trim yamaha outboard parts forum. I want to remove it and have a key welded to it to aid in beach launches and retrievals. I think they are plastic so you may be able to heat the tip of a small flat blade screwdriver and poke it into the plastic. The fasttrack units are pretty hard to get apart if used in salt water, and the valves are not serviceable. How to remove broken off trim tilt plastic release valve 35 hp mercury 1987 when just the tip of the manual release broke off on mine i was able to fish it out with a straightened out fishing hook. If the unit still wont move, replace the manual release valve. Outboard trim manual release screw 2 different power. Power trim tilt manual release valve for mercury 8442a2 893929a01 186751. The manual release valve is corroded to a point where you will have to use heatdrilleasy out to get it out and once out you will need a new manual release valve so along with the labor you now also have the fear that some of the slag from the removal of the manual release valve fell into the trim and tilt system and this will cause failure. The hull truth boating and fishing forum view single. How do i release a stuck valve on a power tilt and trim unit. Upgraded stainless mercury power trim tilt manual release valve 186751 93929a01, 8442a2, 8442a1, 811618a1, 811618, 812843a1, 99660a1. Locate the solenoid jump the 2 large terminal posts together this should get the engine up.
To make your diagnosis of problems or to make repairs. In this video we show how to repair a yamaha power trim unit, replace the o rings, refill and bleed the system. If you turn it counterclockwise with the engine in the tilted position, it will take pressure off the hydraulics of your tilt trim motor and allow gravity to. I developed a small leak in my tilt trim manual release screw. Need to find the manual release valve on outboard motor. Use a small slotted screwdriver and heat the tip with a torch until it is very hot, but not red hot. Mercury 30 to 300hp force power trim tilt manual release valve. May 22, 2019 power tilt trim oil pump air lock 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. The broken manual release valve is far more likely. This would not allow pressure to build up in the cylinders to move the piston up or down. Close the manual release valve if the system wont move in either direction. Power trim system wiring diagram 4 cylinder models using commander 2000 side mount remote control 81. Mercury marine 150 hp verado 4stroke 4 cylinder power. Not sure if i am doing anything wrong but i cant seem to budge the manual release screw for my tilt trim.
On all brands this screw is to be turned counterclockwise to release an upraised engine into a trim position where it can then be operated. Power trim system wiring diagram 3 cylinder models using commander side mount remote control. Johnson power trim leaking at manual release valve moderated. Is this my pressure release valve screw for my power trim. Engine leaks down tilt, not trim yamaha outboard parts. Go back and make sure your manual release is tight the try the controls again. The switch is also used for trim operation of the outboard motor during driving at low speed. Motor will remain at full tilt position until junction box and trim switch are installed and operated.
When replacing internal components, use only the correct parts catalog for the model you are servicing. Hydraulic manual release valve moderated discussion areas. Power tilt and trim maintenance makes a difference. Mercury power trim tilt manual release valve 8442a 2 893929a01 fsm025 186751 93929a01, 8442a2, 8442a1, 811618a1, 811618, 812843a1, 99660a1. If this doesnt work, the valve body needs to be resealed but dont jump to that conclusion. How to remove broken off trimtilt plastic release valve 35.
Volvo penta exploded view schematic power trim system. Power trim and tilt units are equipped with a manual release valve to raise or lower the outboard manually. Upgraded stainless mercury power trim tilt manual release. Manual release assembly 1 required per assembly incls.
1412 71 67 848 572 665 792 946 33 1570 1121 406 622 276 660 934 1042 374 200 64 1120 362 159 865 109 1109 1312 589 39