BoatBanter.com - View Single Post - Weird Johnson 70EL76D tilt/trip setup... any ideas?

Short Wave Sportfishing

On Fri, 27 Apr 2007 09:18:46 -0400,
wrote:

A co-worker is helping a neighbor work on a pontoon style deck boat.
It has a Johnson 70EL76D engine installed. He is asking me about the
tilt/trim system because it has a leaky hose.

This is where it gets weird.

The tilt/trim system is being described to me as a single acting
cylinder actuated by a remotely mounted hand operated (lever) pump.
There is a knurled knob on the remote pump that we assume is the
relief valve. As described to me.... both ends of the hydraulic
cylinder are visible and there is no place that an electric pump could
have ever been installed. The hose from the pump screws into the side
of the motor mount casting, but he wasn't sure how the fluid got from
there to the cylinder.

The pump has been installed on the rail of the boat and one must leave
the wheel to walk over and actuate the tilt trim.

I've never seen anything like what he is describing. Is this factory
or designed by Rube Goldberg after the fact?

A heads-up on this goofy sounding setup would be appreciated.....

There are several hand operated trim/tilt mechanisms on the market -
usually for smaller engines, but none I've seen are as you described.

What I suspect is that it's an adapted cylinder from a hydraulic
steering system which use single cylinder actuators. Your sense that
it's a Goldbergish type installation is probably correct.