Trim sender switches reinstall Alpha 1 gen 2

ilove2fixx

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Feb 13, 2016
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501
Hi guys ok how do I reinstall the trim senders and adjust them I didn't understand this guide

http://www.mercstuff.com/trim_limit.htm

Is that for the gen 2

Also what do they mean in the full "in " position
And trim the drive " out " ?

Also I accidentally pressed the trim up last week and the rods are extended to much


Thanks
 

sogood

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May 11, 2016
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Full "in" means the leg (the outdrive, the bit with the propeller attached) is fully withdrawn "in" or "down" if you like. "Out" means the opposite, as in extended out or raised up. Just the terminology. If your rams are extended too much and the leg/outdrive is locked, or "jammed " in the up/out position, having someone pull down hard or even stand on the leg while you operate the "down/in" switch, can usually free it. Otherwise you may have to undo the rams to free the outdrive/leg.

​I adjusted my trim sender by removing it from the leg. (Turning the steering hard to the appropriate side can give better access to the 2 fixing screws). Then, with my good woman on board, watching the gauge, with the leg in the full down position, I rotated the small knob at the back of the sender until the needle read "Down". I tested the gauge by slowly rotating the knob in the opposite direction, causing the gauge to read "Up". Rotated the knob back to the "Down" position, as shown on the gauge and fixed the sender back onto the leg. I fixed it on so that the screws are about midway along the fixing slots, giving room to tweak if needed. Don't rotate the sender once it is back on the leg or you'll throw it out again, Fix it straight on and tighten the screws.

Then raise and lower the leg and check that the gauge is corresponding. That's what worked for me.
 

ilove2fixx

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Feb 13, 2016
Messages
501
thanks bud I'll try that
But how about the other side? Don't I have to measure my rods to 2x inches ? My rods are disconnected
 

ilove2fixx

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Feb 13, 2016
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501
I got the trim sender measuring pretty good

But my Trim Limit doesn't work at all
I tested the 2 contacts under the 4 screws and they don't have any voltage , they're supposed to have 12v right at all times ? Or only when pressed trim up?

I press up trim button slightly and it doesn't stop automatically .. can I damage or rip anything if I trim all the up when engine off ?
 

stonyloam

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Mar 13, 2009
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You will not damage anything with the engine OFF. You only have voltage on the trim limit switch when you press thr trim switch. Run the outdrive all the way down and with your OHMMETER test for continuity between the two wires coming out of the trim limit switch. If open, then adjust the switch until it does show continuity. If you do not have enough adjustment with the screw slots, return the adjust screws back to about mid slot, then remove the limit switch from the outdrive and rotate the shaft (clockwise looking at the back) until you have contact. Lower the outdrive all the way down and reinstall the switch without rotating the shaft as best you can. Should be close enough to work, (if not adjust with screw slots) adjust to proper length from there.

OK if you trim limit does not stop the outdrive from going up, someone may have bypassed the the limit switch. Look in the stern for two black wires coming through the transom. They should be plugged into two connectors, one with a purple/white wire and one with 2 blue/white wires. See if the black wires are unplugged and the connectors are jumpered together. If they are your trim limit has been bypassed.
 
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ilove2fixx

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Feb 13, 2016
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I looked at the wires one set goes to the lever I guess ? And the other set I did see connect to purple / blue connectors ., not connected to each other ..
Is the trim limit getting power from the shift lever area correct ? I did only see 3 wired guy going to my hand lever when I was putting it back together after reupholstering that area., I read somewhere that there should be 4 wires ??
 

stonyloam

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OK the purple/white wire comes from the TRIM switch on the control. One blue/white wire comes from the TRAILER switch. The other blue/w wire goes to the UP SOLENOID. When you hit the trim switch the voltage goes through the p/w wire into one black wire through the trim limit switch, out the second black wire into the connector thru the blue/w wire to the solenoid. When you hit the trailer switch the voltage goes directly through the b/w wires to the solenoid. Your TL switch is a contact arm and a little copper bar. If it is properly adjusted, when all the way down the contact rests on the bar. As you raise the outdrive the contact moves across the bar until it comes to the end and contact is broken and the trim pump stops. If the distance between the ram bolts exceeds 20 3/4" (for a gen II) than either it is out of adjustment or the switch is bypasses, either externally or internally by a short. So first test, unplug the two black wires and see if the trim button works. If it does your problem is at the control. If it does not, run the outdrive all the way down and check for continuity at the two black wires. If open then your switch needs adjusting. If there is, plug the wires back in and run it up until it stops. If the center to center on the ram bolts is greater than 20 3/4" inches adjust by turning the switch housing.
 

ilove2fixx

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Feb 13, 2016
Messages
501
What do u mean unplug the 2 black
Wires ??

So the center cover with the copper ends are suppose to glide over the copper areas below right? And once they go off the drive basically stops ? That's how it works I'm assuming ?

I was spinning that thing all around and I got no movement from the drive .. I saw videos of where as soon as it's moved a little the drive moves ?
 

stonyloam

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Mar 13, 2009
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The two black wires from the trim limit come thru the transom and plug into two connectors (inside the boat near the stern), one with a purple/white wire and one with two blue/white wires.
That is basically how it works.
The outdrive will not move unless the trim button at the helm is pushed. Just turning the switch will not do it.
 
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