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    1976 Mecruiser 351W Ignition System

    With my Trim Pump almost sorted I am moving on the the ignition system...motor has (had) all kinds on automotive parts on it; carb, intake, and ignition. Distributor looks to be a normal Motorcraft with vacuum advance and the gray Ignition Control Module. Carb will be Edelbrock 1409 as the motor...
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    1976 Mecruiser 351W Trim System

    Thanks, the o-rings from Seaway (OEM) are only $1.36 so no big deal there. Yes, I did check the valve block and plan on running over both sides with surface grinder/stone. (have a client with a machine shop so I will let them do it)
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    1976 Mecruiser 351W Trim System

    Here is some useful info re: these older all metal trim pumps: There are 4 o-rings between the reservoir base and the valve body on the bottom-part number is 25-48171. This same o-ring is used on the filler screw (10-79953q04) so you will need 5. The large o-ring for the reservoir to is valve...
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    1976 Mecruiser 351W Trim System

    Definitely did not mess with the inner hex screw :) I did find the reverse lock valve NOS so I have that on its way and the reverse lock switch is installed. I am down to just sorting the routing of the hoses. I also now have the 2 service manuals for that year MC1 and found a 'test' diagram...
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    1976 Mecruiser 351W Trim System

    I think the fitting was changed to a inverted flare style because the SS braided line from the outdrive was routed directly to the pump.
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    1976 Mecruiser 351W Trim System

    My guess was wrong on the plug in the above picture. There is a hex adjustment screw under that plug.
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    1976 Mecruiser 351W Trim System

    Here you go @kenny nunez I am guessing the plugged port is where the low pressure line to/from trim sender goes.
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    1976 Mecruiser 351W Trim System

    Good to know that I will not have to be replacing all the seals. Thanks!
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    1976 Mecruiser 351W Trim System

    It could be PS Fluid. It is red and pretty light weight so I figured ATF. Sticker on reservoir says regular engine oil so knew it was not right. Standby for a pic.
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    1976 Mecruiser 351W Trim System

    I removed the trim pump today to sort the hoses and found that it has ATF fluid in the system...how scr*w*ed is it (am I)?
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    1976 Mecruiser 351W Trim System

    Yeah, I found those but a little too much $$ for a switch that is known to not last. But then again restoring an old boat will always be hard on the wallet. This is why I am thinking a type of prox switch. Just need to determine if the OEM switch is NO or NC.
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    1976 Mecruiser 351W Trim System

    Thanks, I did that and the cylinder does work. Lockout switch is on the way too.
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    1976 Mecruiser 351W Trim System

    Right, I am not finding the limit switch so I am thinking maybe a magnetic proximity switch solution. Epoxy a rare earth magnet to top of outdrive and the sensor in the gimbal ring. Might need a relay but I think it will work.
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    1976 Mecruiser 351W Trim System

    THANKS for your time on this!! You can't see it in the 2nd picture but the one line coming straight out (parallel to red wire) from the cylinder is just open; not connected to anything and yes, I did find a port on lockout that is open too. When I removed the cable plate (?) two springs and a...
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    1976 Mecruiser 351W Trim System

    Thanks Kenny. So as it is now there are two braided steel hoses from the bottom of the pump to down under gimbal-a high pressure loop for trim rams in and out. Then these two disconnected plastic hoses go from a seperate port on the pump to the trim cylinder to the lockout to the gimbal...
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    1976 Mecruiser 351W Trim System

    I have a 1976 American Eagle (ABC) with a 351W. It has the old style trim system with the 56046A1 trim indicator sending unit mounted in the engine bay. It has been disconnected and both hydraulic lines are just open. I posted about changing to the new style (senders on gimbal ring) but that...
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    Gimbal Ring swap

    Thanks all for your replies...guess I will focus on getting what I have sorted.
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    Gimbal Ring swap

    Thanks! So if I get the right Gimbal Housing to go with the new ring with 'muffs' will it bolt to the inner transom plate? Basically can I change everything on the outside of the boat and leave everything inside as is?
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    Gimbal Ring swap

    I have a 1976 American Eagle with what shows to be the 888 outdrive (has 888 decal S/N 4228535) but with a 351W. Everything I have found the 888 is only on the 302 so that's confusing but on to my question: Can the Gimbal Ring be swapped for a new style that has the trim senders? My boat has the...
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    Removing Bell Housing

    Thanks! Watched a few Youtube videos on this and it look like it is no small task. Guess I will not be replacing the needle bearings :)
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