Stumped by Alpha 1 trim senders/pump not functioning UP

Ten Years Gone

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Mar 1, 2011
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Hi Guys,

I did a complete bellows and shift cable replacement recently and in doing so, had to remove the gimbal bell housing, which of course required removing the trim senders. Well, everything went back together smoothly, but now I cannot trim the drive UP. It will only trim down. The trim pump does not react at all to the UP switch on the helm control.

I tried wiggling and pushing/pulling on the little 3 bladed terminal plug that goes into the pumps electrical connection to no avail. I will tell you this, when I simply stick a jumper wire in the proper female blade terminal positions on the electrical connector; the rams go in and out just fine. What am I missing?

I didn't disturb the senders at all as far as I can tell, and I know I have them back on in the correct position relative to the gimbal housing, since I marked them before removing initially.
Is this simply a ghost electrical anomaly, or do you think I screwed something up when removing the senders?

It may not be relevant, but I will add this bit of info...when I bought the boat, the trim limiter never worked. If I kept pressing up with the non-trailer switch, the drive would continue all the way up without stopping. I didn't care because with a boat this heavy, I never need to worry about using the drive to trim excessively on the water.

A curious note. Before this job, the trim position gauge needle would always sit in the middle, and never moved. Now it is pegged to the extreme right side of the gauge.

Thank you very much in advance for any suggestions.
 
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gauge pegged all the way up typically indicated the sender is bad. PO may have wired the limit/sender so you can run the drive up all the way with the trim up. My Sea Ray's senders were bad, and trim up did not work, only the trailer button did. (and gauge pegged to full tilt up)
 
SOLVED!

The trim sender switches are indexed for proper rotational travel!
Both of the switches were out of index. That explains why the trim position gauge never worked before, and why the limiter never worked either. The PO or his mechanic failed to index the switches before installing!

I sure am glad I got this one resolved so easily, and I hope this helps other members in the future with similar symptoms.
 
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