Anyway of adjusting these?

JSP · 03 June 2009, 19:12

When trimming all the way in the trim motor seems to slow right down pushing against the stainless bars. (WTF are they anyway?) and it's also very slow to trim out after it's been pushed against the bars. Anyway of adjusting the bars in?

Cheers,
John (sits back and waits to have the obvious pointed out)

Nasher · 03 June 2009, 19:14

John

It's supposed to do that to give finer adjustment in the range where you are using it whilst on the water.

Its Trim and Tilt, the Trim being the slow part for adjusting the boat on the water, and Tilt for lifting the engine up out of the way.

Nasher.

JSP · 03 June 2009, 19:16

Quote:

Originally Posted by Nasher

John

It's supposed to do that to give finer adjustment in the range where you are using it whilst on the water.

Nasher.

And John gets the obvious pointed out in record time

Cheers mate.
Maybe it's my motor but it takes an age to trim all the way in.

Mercury · 03 June 2009, 19:34

Quote:

Originally Posted by JSP

Maybe it's my motor but it takes an age to trim all the way in.

It's supposed to. Once the mid section hits the two rams that is your trim adjustment, then on the way up, as soon as the mid section leaves the rams that is your tilt. hope this helps. Colin....

JSP · 03 June 2009, 19:41

There's been times though when I could have done with it trimming in quicker. But if that's the way it is, cheers lads

Pete7 · 03 June 2009, 19:49

John,

What fluid have you got inside the PTT unit? and more importantly what should it be?

A classic way of stopping them leaking is to put EP90 (gearbox oil) inside instead of hydraulic fluid. The PTT will still work but it's very slow.

Don't take the fill plug out when the PTT is under pressure.

Pete

JSP · 03 June 2009, 19:52

Quote:

Originally Posted by Pete7

John,

What fluid have you got inside the PTT unit? and more importantly what should it be?

A classic way of stopping them leaking is to put EP90 (gearbox oil) inside instead of hydraulic fluid. The PTT will still work but it's very slow.

Don't take the fill plug out when the PTT is under pressure.

Pete

Ahh I'll check it out on the weekend. It is very slow so this could be the problem. Cheers Pete

Turbodiesel · 03 June 2009, 21:15

One little tip of the day!!. If at the end of those two rams you have some balls seated in the top of the rams (cant see if you have in the photo) put some grease on the balls and make sure then can spin round, they should be able to spin freely if they dont it can slow the trim down a bit not alot but it helps!.

JSP · 03 June 2009, 21:24

Quote:

Originally Posted by Turbodiesel

One little tip of the day!!. If at the end of those two rams you have some balls seated in the top of the rams (cant see if you have in the photo) put some grease on the balls and make sure then can spin round, they should be able to spin freely if they dont it can slow the trim down a bit not alot but it helps!.

Your a diamond mate. Will check

Was worth asking after all

Davie · 04 June 2009, 22:11

Your trim ram seal on the port side is broken which has let salt water under the seal. It it now so badly corroded in there that the end cap with the 4 indents in it has gripped the ram so tight that the pressure relief valve is opening (the same valve that opens when you hit a submerged object). Take a punch and remove the end cap (special tool is crap). Press out the trim ram and scrape out the corrosion. I would do the other at the same time. Make sure you quote the serial no as there are 2 types of seal. TOP TIP When assembling, push the trim rams right in then put as much oil (ATF ONLY) as you can then screw the end caps on. This will hopefully help with bleeding the system otherwise you will need to remove the engine off the transom to slacken the pump. Remove the fill plug 17mm hex to fill with ATF until it overflows. Tilt up and down once only and leave it for 10 mins then do again. DO NOT go up down, up down, up down. You will airiate (spellcheck) the oil and you will get nowhere.

Bigmuz7 · 04 June 2009, 23:24

Quote:

Originally Posted by Davie

Your trim ram seal on the port side is broken which has let salt water under the seal. It it now so badly corroded in there that the end cap with the 4 indents in it has gripped the ram so tight that the pressure relief valve is opening (the same valve that opens when you hit a submerged object). Take a punch and remove the end cap (special tool is crap). Press out the trim ram and scrape out the corrosion. I would do the other at the same time. Make sure you quote the serial no as there are 2 types of seal. TOP TIP When assembling, push the trim rams right in then put as much oil (ATF ONLY) as you can then screw the end caps on. This will hopefully help with bleeding the system otherwise you will need to remove the engine off the transom to slacken the pump. Remove the fill plug 17mm hex to fill with ATF until it overflows. Tilt up and down once only and leave it for 10 mins then do again. DO NOT go up down, up down, up down. You will airiate (spellcheck) the oil and you will get nowhere.

Thats a lot of work for not a huge problem as it seems .. whats the down side of just leaving it ? and how soon would ignoring it be fatal in your view ?

doggypaddle · 05 June 2009, 09:37

John,
Mine takes for ever to trim down when its on the trailer, but when its on the water its ok, as long as your'e in forward gear the thrust of the prop helps it trim in quicker. trimming out is never a problem.
theres quite a complex arrangement of relief valves in the tilt unit and the way it works means there is more hydraulic pressure involved in trimming in then just tilting in or trimming out so it will be a bit slower anyway.
i got into the habit of trimming in while still under way saves what seems like an age waiting for it to trim in when stationary,
seal could do with changing, see if your fluid is pink rather than red.

tinker · 05 June 2009, 10:46

The cross sectional area of a cylinder's piston when retracting is less then when it is extending (the rod attached to the cylinder's piston reduces the CSA) Perhaps that's why they are slower going in.

JSP · 05 June 2009, 10:48

Thanks for all this lads. I'm going to check this out this weekend. I treated the corrosion on the that you can see earlier his year. That photo was taken just after the winch strap snapped my finger.