Leaking tilt trim hose

bhammontree

Recruit
Joined
Jun 10, 2010
Messages
2
Hello

I have a 1986 Galaxy cuddy cabin 19'9" with a 175 HP mercruiser inline 4. I think the motor is also called the mercruiser 470. I have a leak on one of the hydraulic lines going from the tilt trim pump to the transon. One line has a braided cover and one is smooth - the braided one is the one leaking.

My problem is I can not access the end of the hose where it passes through the transom to remove and replace the hose. Is there a trick to getting to that connection to remove the hose without pulling the motor? If not would it be possible to somehow splice new hose on to the old hose so I can cut out the leaking section? The leak is close to the pump so I have plenty of good hose to work with. If anyone has ran into this problem please let me know how you fixed it.

Thanks
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Leaking tilt trim hose

You access it from under the transom shield on the back of the boat. You have an anode covering the small manifold that all the trim lines go to, Remove the anode, then remove the 2 nuts holding the manifold (#33) on and pull it down to access the lines.
You will probably have to remove both lines as the gasket (#32) will most likely be destroyed when you remove the manifold.

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RRitt

Captain
Joined
Mar 30, 2006
Messages
3,319
Re: Leaking tilt trim hose

If not would it be possible to somehow splice new hose on to the old hose so I can cut out the leaking section? The leak is close to the pump so I have plenty of good hose to work with. If anyone has ran into this problem please let me know how you fixed it.

Thanks

It takes a crimp tool to put the end on hose. However, I would not be surprised if you got a few weeks of service out of some barbed hose splices and a handful of high quality hose clamps. I've seen people use compression fitting from ACE hardware plumbing department before. Sometimes, it even works for almost a whole season. Such an unreliable fix should only be used in emergencies.
 

picklenjim

Chief Petty Officer
Joined
Mar 11, 2009
Messages
528
Re: Leaking tilt trim hose

Drop the manifold like Don said. Then disconnect the bad hose from the manifold. Tie a string to it. Now pull the bad line up from inside the boat. Now tie your new hose to the string outside the boat. Pull the new hose by the string into the boat. If you don't tear up the gasket to much just put some silicone gasket maker on it.

I wouldn't risk it by trying to repair it. If it blows on ya while your out you will really have a problem at the ramp trying to get the drive up so you can pull the boat out.
 

bhammontree

Recruit
Joined
Jun 10, 2010
Messages
2
Re: Leaking tilt trim hose

Thanks for the info. This looks way easier than I thought it would be.
 

Bondo

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Staff member
Joined
Apr 17, 2002
Messages
71,095
Re: Leaking tilt trim hose

However, I would not be surprised if you got a few weeks of service out of some barbed hose splices and a handful of high quality hose clamps.

Ayuh,.... That's a Hi-pressure line, I Doubt you'd get a single cycle out of a Band-aid like that....
 

RRitt

Captain
Joined
Mar 30, 2006
Messages
3,319
Re: Leaking tilt trim hose

It would leak and drip but it would work well enough to save a remote vacation. Hose clamps front and rear of each barb on top of the stainless weave. The stainless weave will prevent hose from expanding and stretching loose from barb. If you've only got seven days and you don't want to spend 3 of them driving to the nearest city and back.
 
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