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Bennett troubleshooting - no HPU sound

 
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chipwagon



Joined: 02 Mar 2016
Posts: 52
City/Region: Victoria
State or Province: BC
C-Dory Year: 2007
C-Dory Model: 22 Cruiser
Vessel Name: Sam 'n Leo
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PostPosted: Thu May 11, 2023 11:00 pm    Post subject: Bennett troubleshooting - no HPU sound Reply with quote

I couldn't find my exact problem anywhere on the internets, thought I would try in case someone had a similar issue. After getting annual servicing and towing 6 hours up my summer marina I found:

- the trim indicator is blinking on one side
- when pressing the bow up or down there is a click sound but no HPU sound--so it seems like the servo is working but not the motor
- and of course with no HPU there is no hydraulic and no tab movement
- the unit is from 2007 (v351 hpu)

I didn't have time to pull the unit to investigate on my last trip. I'm considering just buying a new HPU before my next trip up north because it seems the most likely culprit, but they aren't cheap (about $500). Could it be anything other than a dead HPU? Something like a bad connection issue on the back of the unit, or is that pipe dreaming? Thanks for any tips.

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thataway



Joined: 02 Nov 2003
Posts: 20778
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
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PostPosted: Fri May 12, 2023 12:35 am    Post subject: Reply with quote

First thing I would do is check the power to the pump, before the relay, then after the relay. There may be a fuse or breaker on the higher power to the pump.
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Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
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colbysmith



Joined: 02 Oct 2011
Posts: 4522
City/Region: Madison
State or Province: WI
C-Dory Year: 2009
C-Dory Model: 25 Cruiser
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PostPosted: Fri May 12, 2023 12:51 am    Post subject: Reply with quote

Which unit do you have? Check my thread at: http://www.c-brats.com/viewtopic.php?t=31455

In the end, Bennett sent me a new Relay module. I'm not home right now to check into it, but if your relay module is bad, I've got one I'll sale you. I ended up upgrading to a different system. That was after I realized what I had was still under warranty. While Bennett couldn't see selling me something that was on backorder everywhere, they were able to send it out to me asap when it was a warranty issue... Colby
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chipwagon



Joined: 02 Mar 2016
Posts: 52
City/Region: Victoria
State or Province: BC
C-Dory Year: 2007
C-Dory Model: 22 Cruiser
Vessel Name: Sam 'n Leo
Photos: Sam 'n Leo
PostPosted: Fri May 12, 2023 1:26 am    Post subject: Reply with quote

Thanks for the advice Thataway and Colby. I guess I should be able to pin it down to either the relay, the connector, or the HPU. If it looks like a relay I'd love to buy your's Colby. It sure looks the same, the only model number I know for certain is the the "v351" stamped on the HPU.
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