Trim goes down but not up

Rock Hall

Rock Hall

Petty Officer 1st Class
Joined
Sep 6, 2005
Messages
213
I'm having a problem that started last season and has been intermittent. I can trim the drive down, but not up, sometimes. 1989 Alpha One Gen 1. The last time I had this problem, the tech at the shop said he was able to clean the sensors up and they worked fine till the end of the year. My boat sits in salt water all summer.

Is there a simple way to clean these up? I thought he said it was the wires that got corroded. oh...and the trailer switch works fine.

Thanks
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Trim goes down but not up

Salt water!!!!! Replace the trim limit switch, or keep tinkering with it all year.
 
Rock Hall

Rock Hall

Petty Officer 1st Class
Joined
Sep 6, 2005
Messages
213
Re: Trim goes down but not up

does the drive need to come off to do that?
 
R

rebars1

Senior Chief Petty Officer
Joined
Feb 23, 2004
Messages
744
Re: Trim goes down but not up

I had the same problem but solved it by wiggling/pulling and pushing back on the wiring harness plug at the pump. Same issue... a little corrosion or loose connections of the wire contacts.
 
K

kush3406

Cadet
Joined
May 16, 2007
Messages
9
Re: Trim goes down but not up

I had a similar prob on my 84 chapperall. Turned out to be one of the two selonoids on the trim pump assembly. I would go through it all with a test light and clean all connections first. Sure beats Pulling it out of the water.

Capt kush:
 
Rock Hall

Rock Hall

Petty Officer 1st Class
Joined
Sep 6, 2005
Messages
213
Re: Trim goes down but not up

Thanks for the ideas. Sometimes it does work, but expect it woould get progressively worse. I will try the ideas given, if that doesnt work, I guess It'll have to undergo more extensive repair.

Thanks Again
 
Rock Hall

Rock Hall

Petty Officer 1st Class
Joined
Sep 6, 2005
Messages
213
Re: Trim goes down but not up

Thanks for those instructions Don. Excellent!
 
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