'80 V150 T/T sensor Q

BF

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Apr 8, 2003
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1,489
Hiya,<br /><br />Some background: <br /><br />My V150 has a tilt/trim gauge (that always reads full up), and on the control it has "trim" buttons (up and down) where your thumb would be and a "trailer" button down lower on the lever. The "trim up" button hasn't worked for eons, so we've been using the "trailer" button for that. There is only one hydraulic cylinder actually on the back, so the "trim" button is used to activate the cylinder on the bottom portion and keeps you from trimming up too outrageously by mistake. The t/t itself works fine... stops at the bottom and top of the working range like it should.<br /><br />There are 2 tilt/trim sensors on the motor. I finally got around to looking at them last weekend (while winterizing). I pulled the starboard side one first, and there are 2 little plastic tabs that are supposed to be attached to a plastic pin in the center. One tab fell out when I removed to sensor. <br /><br />Questions:<br />I figured that the starboard side sensor likely is caput and would normally send a signal to the trim meter and that maybe (?) somehow, the control uses this signal to disable the "trim up" button. (?) Is this how it would work, or is there a separate signal for the meter?<br /><br />What's the port side trim sensor used for? To tell the T/T pump the ends of the working range?<br /><br />How do the sensors work? The little plastic tabs are very flimsy and it doesn't seem like they're supposed to rotate or anything. In the hole that they mount into, there's a slot that they fit into (that look a bit dirty/corroded on my motor), but I can't imagine how these things relay trim position, since the whole thing, the sensor and part of the bracket that they attach to lifts up as you trim.<br /><br />Any insight you can provide would be appreciated.<br /><br />Thanks!<br /><br />Brent
 

BF

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1,489
Re: '80 V150 T/T sensor Q

hello? Is this thing on?<br /><br />Bump.<br /><br />Brent
 

The Marine Doctor

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Joined
Jul 25, 2003
Messages
2,177
Re: '80 V150 T/T sensor Q

One sending unit is for the guage to tell the height of the trim.<br /><br />The second sending unit is the Trim limiting switch, this is what cuts the trim button out once the engine is too high.<br /><br />TMD
 

BF

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Apr 8, 2003
Messages
1,489
Re: '80 V150 T/T sensor Q

Thx,<br /><br />I found a part number in the link you sent in the "swivel bracket" section. Yikes ~$100 each.<br /><br />If one is for trim switch and the other for T/T gauge, then I guess neither of mine is working now. I think (?) that the gauge may have worked for a while after the trim button quit... so I guess that makes sense.<br /><br />Any idea how they work, and more importantly how these senders fail?? Maybe the ones I have could be repaired/cleaned or whatever?<br /><br />Brent
 
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