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Posted by: Majed Apr 14 2007, 01:16 AM

Hi,

Just noticed today the tilt / trim on my Evinrude 1977 70HP is leaking oil from the port side hydraulic cyclinder.

I have had a closer look at it and found there is a whole around 3/4 of the way down the cylinder where something plugged the hole. When you tilt the outboard up or down the oil gushes out of it. I noticed there is some sort of electrical connector which maybe part of some trim gauge.

I have tried numorous bolts to block the whole but they dont seem to fit / work.

Does anyone know what i can do to plug this hole?

I don't have an option to insert pic in this post.

Thanks.
Majed.

Posted by: Rum Dust N Ruckus Apr 14 2007, 01:21 AM

it sounds more like this hole may be an overflow if something in the ram is blown like a seal?
I am no expert though?

Posted by: Rum Dust N Ruckus Apr 14 2007, 01:29 AM

I am assuming you are talking about a small hole (maybe a few mm diameter) near the top end of the ram?

Posted by: Majed Apr 14 2007, 01:31 AM

Its a small hole at the 3/4 of the way down the cylinder on the left side.

I can't post the pics as there is no option on my menu to do so.

Posted by: Rum Dust N Ruckus Apr 14 2007, 01:42 AM

when you click ADD REPLY there is a little add image button

click on that

Posted by: Majed Apr 14 2007, 01:46 AM

When i click on "insert image", it asks me "please enter the URL for this image"

Posted by: Jumpus GooDarus Apr 14 2007, 01:48 AM

OK you guys you have the option to post Attachments I haven't tried it out yet personally but a better option for you now may be to open this URL

http://reg.imageshack.us/

Upload the pic there & either use IMG option or just post direct link that way file wont be reduced in size by attachment option & will be easier to view.

While I'm @ it here's a pic of both option on this site

Posted by: Jumpus GooDarus Apr 14 2007, 01:54 AM

You're like an old womam Majed

Here I did it for you since I 4got to have a look @ motor 2day even blew the pic up

Still reckon it's O Ring or nylon washer



http://img89.imageshack.us/img89/2881/2222ez1.jpg

Posted by: Majed Apr 14 2007, 01:55 AM

thanks for that, as i can't upload software from work...

Posted by: STEVE.P Apr 14 2007, 02:14 AM

Hey Majed
does it have a thread at the hole was there any bolt / screw there befor

it looks like the filler hole for hydrolic oil and you are missing the screw and it has an O ring or teflon washer to seal.
Frankly it cant be anything else.
there is only fill up hole .
get the right one {dealer or wrecker} YOU DONT WANT TO STUFF THE THREAD UP.
cheers steve

Posted by: Majed Apr 14 2007, 02:58 AM

The filler hole is on the starboard side cylinder. Someone told me that that is where the mechanism for a possibly trim gauge sensor connects, but mine was disconnected as i have no gauge. So whateever was plugging the hole has gone missing. I'll try Alan at Picnic Point and see if he has any.

Posted by: jasonb Apr 14 2007, 03:18 AM

dont ask me im only new here

Posted by: STEVE.P Apr 14 2007, 03:22 AM

majed the trim sensor should be on the other side were your power goes to the other unit whitch is the motor it drives the fluid
the sensor is screwed to this via braket and one of the existing srews onthe unit in no way would it be bolted through the unit.


Majed just thought of this there should be a hydrolic line{ Metal} going from that side to the bottom of Ram just look see if there is a line broken .

Posted by: Majed Apr 14 2007, 03:32 AM

Will have a look tomorrow as i am at work now. But the metal line i noticed it to be on the starboard line. The port side cylinder as i recall didnt have one.

Posted by: Fed Apr 14 2007, 02:03 PM

Has your tilt & trim ever worked Majed?

Posted by: poly Apr 14 2007, 02:39 PM

Upload the pic there & either use IMG option or just post direct link that way file wont be reduced in size by attachment option & will be easier to view.

While I'm @ it here's a pic of both option on this site

Reduced: 48% of original size [ 833 x 482 ] - Click to view full image
J.G the lower link to posting pitcher's is not on my computer, would this be a common problem or is it just me

Posted by: Majed Apr 14 2007, 03:48 PM

Fed - My tilt & trim has always worked and is still working now, but i need to keep topping up with oil. And i noticed that the oil is mliky now, obviously because of the hole.

Posted by: Jumpus GooDarus Apr 14 2007, 04:16 PM

Majed water is getting into the oil.

Not good & you definately have a leak & should be attended to right away
1st thing I'd be doing is finding fixing the leak
Then flush out the system to remove all traces of water in other words get rid of all the old fluid flush then add new fluid.

Dont just keep topping up long term even though there's oil in there the water factor has to be elliminated.

Posted by: jasonb Apr 14 2007, 05:18 PM

you could allways just wack in a rubber gromet and test it ,could it be a filler for that side ?

Posted by: Fed Apr 14 2007, 06:18 PM

Majed, looking at your whole tilt/trim assembly from the rear you should see the following components from left to right (port to starboard)

1) Hydraulic pump, it will have an electrical connection to it.
2) Port trim ram.
3) Tilt ram, it's taller than the trim rams.
4) Starboard trim ram.
5) Hydraulic reservoir.

Where is this hole?
My money is on the reservoir. (Fill hole)

Posted by: Majed Apr 14 2007, 06:31 PM

Fed - I'll chcek after work this afternoon and will let you know.

Posted by: Majed Apr 15 2007, 02:21 AM

Oil leak fixed.

My cousin who is a motor mechanic dropped by this afternoon and had a look at the leakage.
He found the tilt gauge sensor which bolts into the cylinder was broken (it is a plastic thread type bolt).

As i don't have a tilt gauge on my dashboard, we decided to block the hole with another bolt which was modified to fit.
(was quoted today $52 for a replacement one, which i dont need anyway)

Topped up with hydraulic oil and tested a number of times up and down and thankfully no more leaks.

Thank you to all for your assistance.

Majed.

Posted by: Jumpus GooDarus Apr 15 2007, 02:45 AM

Good that you found/fixed leak
But dont like the topping up idea esp since you mentioned oil was milky
That means water is mixed with it & over time you will get rust inside the system,

For the cost of replacing the oil I'd drain & flush existing then refill.

Another thing you dont know how much water has mixed in & the water will effect the viscosity of the oil

Posted by: SUMOFISHIN Apr 15 2007, 03:07 AM

Hey Majed, I'd find Blackwoods or somewhere and get a Brass Plug to fit that way you won't have any electrolysis problems, and make sure you use hydraulic oil to refill it not engine oil.

Posted by: Jumpus GooDarus Apr 15 2007, 04:27 AM

Pretty sure the cast is alloy SUMO & Brass is one of the worse materials you could plug up the thread with

Posted by: Majed Apr 15 2007, 04:29 AM

Jumpus - There was actually no oil or water left in the pump. It completely drained out of the hole. But just to be safe, i will double check tomorrow and change if need be.

Sumofishin - yes i am using hydraulic oil.

Posted by: Jumpus GooDarus Apr 15 2007, 04:41 AM

Dont really know the motor Majed but my brother has got same as yours if I get the chance I'll have a look @ it 2morrow see if there's a draining option which I doubt.

Dont like your chances of cracking loose one off the hydraulic lines they'd be coroded in you may want to keep tilting the motor up & down to force as much of the fluid out as you can back out from that hole you plugged.

Posted by: STEVE.P Apr 15 2007, 05:24 AM

yeah I crack one of the lines at the bottom of the ram, I top up. tilt up down a few times crack again to see what oil is like if still milky drain and start process again

Posted by: Fed Apr 15 2007, 10:57 PM

You seem to be knocking these problems over Majed, good for you.
I can't see how your sending unit fits into a hole in your trim ram, mine is an external plastic thing.

Posted by: Majed Apr 16 2007, 05:49 AM

It definately sits in the hole of the trim ram. Its made out of plastic too but screws on into the ram, but it was snapped and the bolted part remained in the ram. We custom fitted a stainless stell bolt into the hole which seems to have stopped the leak. A replacemnent send bolt is $52, but i dont need it.