tild drive probloms

75boater

Cadet
Joined
May 16, 2007
Messages
19
i am having a problom with my tilt drive on my boat... it is a 1972 18ft. 165hp. inline chevy 6cyl. the tilt went down but will not come up... went down nice and smooth and when trying to get it to come back up it doesnt even get the hydrolic pump going... i tried to bypass the switch but still nothing.it has the 3 push switches on the dash... any ideas? i called a local marine shop and talked to them but they said i should have 2 sylinoids on the hydro pump unit... it onl has one and looks like it never had 2. any wiring diagrams or anythign would be of grea help... new boater not really smart when it comes to boats but i know cars inside and out... pretty mechanicly inclined... like i say anything is better than nothing it is a merc drive incase that matters
 

75boater

Cadet
Joined
May 16, 2007
Messages
19
Re: tild drive probloms

thanks a bunch!!! that helps alot... only problom is, the guy at the shop said it has 2 sylinois... i wonder if its saposed to the diagram even shows it... but i only see one on my boat... hmmmmm
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: tild drive probloms

You would need Merc oem manual #1 for your trim system, the one in Reel Poors link is for 85 and above. You might find #1 on ebay or your local dealer can order you one.
Here is a wiring diagram for the 165, the lower, left shows the trim with the single solenoide (up) down is directly to the electric motor and not controlled thru the solenoid.
A single solenoid was used on the early systems.

165 wireing diagram
 

Boomyal

Supreme Mariner
Joined
Aug 16, 2003
Messages
12,072
Re: tild drive probloms

Sorry 75, I thought you had an OMC stringer outdrive, not a Merc.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: tild drive probloms

There has been Several Trim Pumps used over the years,.......

Some with 1 solenoid,...... And Some with 2........
Maybe your Mechanic doesn't know that Yet.......

If you Can't get your's Working,........
I'd search ebay for 1 of the Newer models with the Plastic Res. Tank,,......
It's an Easy Up-date for Your's..........
 
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