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Old 08-13-2018, 08:21 PM   #1
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City: Seneca Lake NY
Country: US
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 2,766
Jabsco Mod 31750 Pump Repair

My Mod # 31750 Jabsco pump recently failed - it would pump but not shut off.
I suspected the Press Sw but found parts are no longer available.

Another forum post I found indicated that the Press Control for these variable speed pumps have a transistor control that fails. The transistor part # is a Allegro A1321EUA hall effect transistor. The transistor is discontinued but I was able to find NOS parts online / eBay at a few $/ea.

Reported fix - With a sharp utility knife you can split apart the sensor and replace the transistor. Re-seal it with epoxy after replacement.

When my part arrives and I get a chance to do the fix I'll update my results.
2008 MS 34 HT Trawler
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