Removal of trim/tilt assembly.

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seasick

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On my sx150 2000 motor, I developed a leak in the trim/tilt assemble a few seasons ago. The three ram cylinders had leaky seals which I replaced last year. Turns out that there is another leak.. I made it through the season without having to refill the reservoir but barely. It turns out that I have leakage in the areas when the reservoir and pump attach to the piston assemble.
So... I have to remove the assembly, and replace the 6 o-rings. Simple enough I guess but I hit a snag. The assemble pivots on a pin (axle) on its bottom. Although the parts diagrams show a pin with an internal circlip in a grove on both sides of the lower bracket, mine has a small bolt with a washer on each end. Removing the bolts and washer was easy but when I went to knock the pin out, it appears to be frozen in place.
I went from tapping to seriously wacking using a metal socket that is a bit smaller than the pin. After a few days of PB blaster and wacking , I think the pin has moved about a mm. Well it got cold and Ialso had to cover the boat for winter so the job will probably wait till spring. An online video shows the pin just sliding out but not mine. I wonder if anyone has had a similar experience removing the trim/tilt assemble and what they did to get the pin out. I thought about using a makeshift puller on one end using the threaded hole and tapping from the other side but the bolt hole is not that large and I don't want to pull threads out. I just don't want to crack the bracket casting either with the heavy wacking. I will continue to soak the pin as best I can over the winter and see if I can get it to slide easier.
 
This is what you have? https://www.boats.net/catalog/yamaha/outboard-by-year/2000/sx150tlry/power-trim-tilt-assembly-1

I just removed the assembly my motor, but I don't have that lower pin. Mine is secured with 3 bolts through each side of the bracket, into the assembly housing. Is it possible the assembly is slightly tweaked (possibly from unbolting it somewhere else)? Have you already removed the pin that goes through the tilt ram and secures to the motor? Those plastic bushings that are used "should" allow it slide out very easily.

Edit: For clarification... by "tweaked" I mean maybe the assembly is slightly cockeyed to the bracket so it's putting a lot of tension on the pin. Maybe someone else can grab the assembly and sort shake/wiggle it as you tap it out.
 
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That picture is exactly what I have. The upper pin on the tilt ram has been removed and the motor was on the saftey lever.

The entire assembly does move (rotate) easily till it hits the frame( normal range of motion). In other words there is no binding of the assembly during its normal motion when raised or lowered. If I remember correctly, I also looked at the two end bolts to see if they moved when the assembly was rotated and they didn't which would tell me that the pin is frozen in the motor bracket but free in the pump assembly. I know that there are supposed to be plastic bushing but it is hard to really see them since if there, they are recessed in the bore of the bracket. You would think that the plastic sleeves would preclude the pin from freezing to the bracket . It almost seemed that there might be a locking bolt or something similar that locks the pin to the base of the pump assembly but the parts diagrams don't show one and I can't see one.

When I get a chance, I am going to try something I thought of yesterday. Although it shouldn't normally make a difference, I am going to try to TAP the pin from the left side towards the right side. So far I have whacked it from right to left. Maybe that will help free something up or break some sort of corrosion blockage.

As always, thanks for the input.
 
What a pain! I have no insight to share, but am commenting to 'watch' and hear what works out in the end. Hope it goes easy when you return to it in the spring.
 
There's certainly no retaining ring being shown - and it would make sense that there is none since that's the purpose of the two little bolts.

Good idea to tap from the other side - maybe keep going back and forth.

If you screw the bolt into the pin w/o the washer, can you bottom out the screw head? Or use a couple small washer or a nut (as a spacer). Then see if you keep turning the bolt to turn the pin. Obviously not too hard as you don't want to shear the bolt. Using a steel bolt instead of SS would provide more torsional strength and make it less likely to shear.

I'd still try pivoting/shaking/rocking the assembly while you tap.
 
My suggestion. Get some penetrating oil. If you can move it at all, it will come out. Apply liberally a few times over the winter and work out in the warmer weather.
 
Thanks for all the insight. In no particular order let me comment.
Suzukidave- That picture is great and really informative since it is obvious there is no center pin or bolt. It also shows a bit of corrosion or goop set back a bit from each end. That mark seems to line up exactly where the very narrow gap is between the motor bracket and the pin holding casting of the trim assembly. I am suspecting that whatever buildup that is, it is not allowing the pin to slide easily.

Dennis: I have a gear puller tool and a steering wheel puller. They has several different threaded and hardened bolts both ASE and metric. I will see if one happens to match the thread in the pin. Unfortunately the boat is in a another state so that has to wait till I get back there. I will at a minimum try tapping back and forth to see if that helps. I currently have one bolt without the washer screwed in flush with the pin but I didn't try to turn it. I don't think the pin will turn since I didn't have to hold anything when I removed the bolts initially and they were relatively tight. I also don't want to snap that bolt:)

Fishtales: I have been spraying penetrating oil and will continue to do so. The gap I mentioned between the assembly and the bracket is tight. I can't see the pin at all. I may try making some sort of seal ( putty perhaps around the bottom and sides of that area to perhaps make some sort of reservoir for the oil to sit and soak. Right now it just drips off.

I'll keep you all updated.
 
I couldn't take the suspense so I drove to the place where my Grady is currently located in NJ to try the things we discussed. I brought a small sledge hammer for some authority. Perhaps the soaking last week with PB Blaster was the trick but after trying to hammer the pin from right to left with not a lot of luck, I tried hammering the pin from left to right.
"Did I just feel it move?" Maybe, let's whack some more. "Wait, I think it did move!" A few more wacks and it freed up:) I was able to get to a point where I could pull the pin by hand. Unfortunately, I can't remove the tilt assembly since the boat has its winter frame and cover installed an the motor can't be raised to get access to the tilt assembly.
That will have to wait.

Thanks for all your suggestions.
 
Hey, good deal! At least that's one thing off your mind!

Were you able to get the pin completely out? Is there anything that shows why it only came out in one direction? Meaning, is it SUPPOSED to only come out in one direction... or was it just hung up some how?
 
Great. That would bother you all winter. Now you can focus on shoveling snow....
 
DennisG01 said:
Hey, good deal! At least that's one thing off your mind!

Were you able to get the pin completely out? Is there anything that shows why it only came out in one direction? Meaning, is it SUPPOSED to only come out in one direction... or was it just hung up some how?
Click to expand...
I didn't take the pin all the way out since I was afraid that the tilt assembly might fall slip down and with the motor down, I can't get to the assembly.
I did slide the pin halfway back in so it seems that is freed up. The pin should come out from either side but I cant be sure why it didn't until I remove the assembly next spring.
 
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