Turn/Removal of Manual releif Valve

[marcosvieira]

I own a 98 Mercury 225 EFI and I replaced the Tilt Ram o-rings and after Assembling I needed to refill the system with fluid and I beleive I am not doing correctly.
1st - While the Engine was up I tried to refill and I could see some bubbles and I thought that everything was ok, and started running up and down a few times.
It's got to a point that the engine just goes up a little and it does not go up anymore.
I was reading one of your posts a couple of days ago and I saw that you mentioned about releif valve.
I found it but I can not turn it.
Am I going to the right direction?
If I am, how can I remove this Plastic Valve? It is not turning at all.
Thanks a lot!,
Marcos


EuropeanAM

[rangerguy]

Turn the plastic relief value to the left, counterclockwise, to loosen it and clockwise to tighten it. Use a big bladed screw driver.

[marcosvieira]

I was trying with a large maybe not a large enough Screw driver and I noticed that was not moving and was starting to damage the head.
Also I notice on the new screw that came with the O-Ring kit a snap ring.
Last night I tried to see if there was a snap ring on my outboard and I could not see it.
In case that there is one, do I need to remove it? If yes how to remove it?
Thanks,

[JAZII]

The snap ring is there so you do not back the screw all the way out. If you ever needed to remove it you would need to take the snap ring off.

JAZII

[marcosvieira]

thanks for your reply,
I will buy a larger screw driver and I will try to turn it just a bit and see if I can lift up the engine.
Hopefully will turn.
I will keep you informed.
Thanks again!

[marcosvieira]

Yes it turned and I was able to remove completely the plastic screw and the snap ring.
Now I'm trying to lift bring it up the outboard and I am not getting it on my own to add some fluid and it is super heavy.
Can I add it into the releive valve plug and try the tilt/trim?
Thanks again,

[rangerguy]

Never tried that, but find a helper and raise that motor up all the way and rest it on the factory flip over lever, then fill it up the right way.

[EuropeanAM]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rangerguy &raquo;</TD></TR><TR><TD CLASS="quote">Never tried that, but find a helper and raise that motor up all the way and rest it on the factory flip over lever, then fill it up the right way.</TD></TR></TABLE>

+1

Have some "Wheaties" before you start....

[marcosvieira]

It is up!
After some "Wheaties" and a help of my daughter.
It is up, now I need to fill up with fluid.

Are these the right steps to fill up with fluid;

1- Close the Releif Valve before start to add fluid?
2- Open the filler cap and add fluid,
3- Close the filler cap and check with the bracket in place if the the trim/tilt is working and than release the safety bracket.
4- Bring back up again and open the Filler cap and add more.

Thank you guys so much!

[EuropeanAM]

That would be the correct proceedure.

One thing I'll add- you may need to do this three or more times. DO NOT overfill the system! Should be full "just to the bottom of the threads on the fill screw opening" with the boat sitting level.

One note of caution.... each time you open the fill cap, DO SO CAREFULLY AND SLOWLY. IT MAY BE UNDER PRESSURE.

[marcosvieira]

Today I openned the cap and added little by little and every time when started the fluid to come out, I closed the cap and play with the trim/tilt to go up and down.
The system bleeded quiet a lot and is moving but not with enough to go up by itself.
I done this for about four times and I added 02 quarts and it seems that I need to add more.
Is this normal?
Remember that I am adding this with the boat on the water.
Thanks,

[EuropeanAM]

That does NOT sound right. I'm suspecting that you have a check valve (or relief valve) that is leaking, and preventing the system from trimming "all the way up".

Diagnosis of this particular problem will require a high-pressure (VERY high pressure) manifold gauge set, and a special adapter that replaces the "manual relief screw".

It MIGHT be a wise decision to solicit the "hands-on expertise" of a Certified or Master Technician with this issue.

[marcosvieira]

1-Releif Valve - I checked the releife valve and I was able to turn in about
almost 02 turns. Now it is very tight.

2- Fill Cap - Also I started filling up again and I noticed that the screw cap was not getting tight anymore, it goes in but it keeps turning.

The system had a small leak through the trim rods and it was going up and down for months till I had no other choice that changing the o-rings, oil seals.

That's why I don't understand. why it is not working with a full pressure now.

Thanks a lot for your reply yesterday,

Marcos,

[marcosvieira]

Hello guys,
I can see a small bubles coming from underneath of the system. Unfortunately the boat is on the water. It seems that is coming from between on of the trim cylinders and the tilt.
I thought those bubbles was beacuse the system was bleeding.

In this situation what will need to be done to seal the leak?

Regards,

[EuropeanAM]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marcosvieira &raquo;</TD></TR><TR><TD CLASS="quote">Hello guys,
I can see a small bubles coming from underneath of the system. Unfortunately the boat is on the water. It seems that is coming from between on of the trim cylinders and the tilt.
I thought those bubbles was beacuse the system was bleeding.

In this situation what will need to be done to seal the leak?

Regards,

</TD></TR></TABLE>

That would indicate a leak at one of the "O-Rings" on the lower pin. You would need to disassemble the unit and locate the damaged (or missing) O-ring.

[marcosvieira]

I think that you are right as usual.

I was looking at the book and I saw a pin/screw underneath but I could not see it underwater.

I went to get the new plastic filler cap today and one of the mechanics said that if was bubling it was propably because the unit got rusted and created a small hole and it could be leaking from underneath and I needed to change the whole unit.

When I first saw the bubbling I try to look underneath but I could not see any pin, the water was not that clear than I was looking the book and I saw this pin/screw and I've got cofused, and now you are telling this.
I really do not think that it is that rusted, actually not rusted at all.

My unit has a pin and a O-ring underneath of one of the cylinders?

Thanks once again!

[EuropeanAM]

The bottom pin (for the center cylinder) travels compeltely through the unit. There are "numerous" identical "o-rings" on this shaft/pin.

The unit must be removed from the engine to properly service this portion of the trim system.... and you'll need an o-ring/seal kit to service it properly (unless you still have these o-rings from a previously purchased it).

[marcosvieira]

Ok. I should have all the O-rings. I purchased the kit part # 878408A 1 and I think that all the O-rings were in there.
I could see this leak between the center cylinder and one of the side cyliders.
So I will need to remove it from the water and remove the whole system from the outboard?
I love challenges I guess, and I do not have too much money and a mechanic that I can trust down here.
I am looking at the book and I see that I need an alignment special tool # 91-11230. Do I really need this?
I think that I can remove the whole system out working in the sand bar on my back yard.
What do you think?

Thanks a million!
Marcos


Modified by marcosvieira at 8:26 PM 8/17/2009


Modified by marcosvieira at 10:20 PM 8/17/2009

[EuropeanAM]

In a pinch, I've managed to do them without the alignment tool.

However.... you're going to want a MUCH cleaner environment than a "sand bar". One spec of dirt or sand..... consider the system "useless".

[marcosvieira]

Dear EuropeanAm,

I thought to remove the whole power trim system from the outboard and than get outof the water and go to my garagae and change whatever is neeeded in a clean and dry area, but if you tell me that I will not be able to remove it completed, I will respect you and not do it, and I will look for a rental trailer.

Thanks,