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Help with old Merc trim tab indicator cables

Old 01-24-2023, 09:18 PM
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Default Help with old Merc trim tab indicator cables

So I have these old tabs that I assume are Mercury Marine. I have the rod that connects the cable to the bottom tab. And I have a through hull fitting to run cables at a 45 to the tabs. But what actuality is suppose to hold the end of the cable? From transom to tab is 15 inches in the up position. I can't see a cable end not binding at that length. Does anyone have pictures of how this is supposed to work, or have an idea of how to make something work.
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Old 01-24-2023, 09:20 PM
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Old 01-24-2023, 11:16 PM
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It doesn't look like your tab mounting plate has spot for the cable to go through?? Must be older tabs and you will probably need to drill it to accommodate the cable.
Here is the entire kit. https://www.mercruiserparts.com/8456...uator-kit-plas
The parts can be ordered separately. I'm sure Marc at Bam/Meruiserparts.com could order what you need.
Here is a pic of what it looks like.
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Old 01-26-2023, 11:24 AM
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I was just planning on using this style of through hull, but I'm afraid it puts the cable at too much of an angle. Which makes the cable throw longer than a mechanical indicator can accommodate.

To mount the fitting in the tab like Griff said I would need to weld a boss on the tabs, but that may end up being what has to be done.

Last edited by justintocars; 01-26-2023 at 11:29 AM.
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Old 01-26-2023, 11:28 AM
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Old 01-26-2023, 02:33 PM
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There was old style hardware for these early tabs that secured the thru-hull cable in two places.
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Old 01-26-2023, 07:08 PM
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While tab is off drill an tap it for 1/2" NPT in the area where Griff's pic showed. (inline with cylinder) Mount tab. Then drill hole in transom in the middle of hole just large enough to pass cable through. Buy 1/2" NPT cord grip from hardware store, (I prefer plastic) fill hole and threads with favorite marine sealant/caulk of choice, (I like Loctite PL40) tighten cord at desired length of cable exposure.
Note... mock up lengths before using sealant.
Amazon Amazon
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Last edited by Rookie; 01-26-2023 at 08:00 PM.
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Griff (01-27-2023)
Old 01-27-2023, 10:31 AM
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So the geometry of the cable is killing me if I drill the tab. I come up with 36* for the fitting, which is 11* of deflection for the end of the cable. Can they operate in that much of a bind?

Can someone mesure the angle or the fitting in merc tabs?

Last edited by justintocars; 01-27-2023 at 10:53 AM.
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Old 01-27-2023, 10:56 AM
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And if I make the geometry line up with the cylinder where their is the least cable deflection the trow will be longer than indicater will allow. Damn OCD...
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Old 01-27-2023, 04:38 PM
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Mercury Racing Accuator Grip Kit part number #845630A02 Help with old Merc trim tab indicator cables-845630a02.jpg

Last edited by Ed; 01-28-2023 at 07:28 PM.
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