Re: Trim not working - help please
Bay, Here is a post of mine about replacing the trim sender/limit switches. This may be your problem. If it is, it's most likely just the limit switch. But better to replace them both if you are going to do it right. It's not easy.
I just replaced both the Trim Sender and the Trim Limit switch.
Once you get the drive off, the bellhousing and all it's bellows off you can access the retaining plate and two bolts that secure the wires into the transom plate.
Bolt #1 is easy to remove. Use a 7/16" socket with extension. Comes right out.
Bolt #2 is a different story. I was able to remove it only one way. Let me tell you my trials:
1. I thought for sure that a 7/16" GearWrench with a pivoting head would be the ticket. In my automotive experience, these tools can help you in tough, small clearance jobs. I have used them many times with much success.
HOWEVER, there is not enough clearance due to the transom bolt boss that sticks out right next to the 7/16" hex head (naturally). I really think Merc engineers are the botom of their class.
2. The only way that I have read that "Merc Mechanics" get these out is by bending a 7/16" combination wrench. So what I did was to take an old MADE IN USA combination wrench, and when I say MADE IN USA I mean a wrench that was made between 1960 & 1985 by a no-name company that your Grandad or Dad purchased and now you have about five or six of these oddball wrench's in your combo wrench drawer. For those who do not have this luck, you will have to buy a 7/16" regular everyday combo wrench and sacrifice it. I first placed the box end of the wrench on the bolt. Almost, but not quite enough clearance. So I heated up the wrench with the box en in the vise until dul red (MAP torch for 2 min or so) and took my trusy hammer and bent the offset back just a bit. Do not try to get it all at once. Too much offset and the wrench will just roll off the bolt head. Went back to the boat and tried the fit. Not enough, but closer. Did this three times until the wrench was a perfect fit. Then you must hold the box end of the wrench on the head of the bolt with your left fingers and try to sweep the bottom of the wrench to the right. The wrench because of it's heavier offset will want to roll off the hex. Just keep the pressure on with your left hand and the bolt will give. Then just work it out a bit of a time. It sucks, but it can be done.
When installing the new switches, line up the two white wedges and clip on the retainer. Keep the wedges lined up straight when installing them. Take some of the perfect seal and place it on the threads of one of the bolts. Bolt down the easy bolt almost all the way home.
Now comes another hard part. If you thought removing that upper bolt was tough, putting it back in is worse. What I did was I started the bolt into the hole. A tough job in itself. Now, the threads have not started yet. Hold the bolt with your right fingers in place. Bring up the box end with your left hand and get the wrench over the hex and switch it to your right hand. Then with your left hand bring up a small allen wrench to hold against the face of the bolt. This will give you the inward pressure you will need to drive the bolt in. Hold the allen wrench against the head and turn the box end wrench until the threads catch. Once they catch, go nice and easy with many breaks inbetween until that sucker is down.
That's it. Another fun Mercruiser project.....NOT.
Johnny
