MERCRUISER warning

jasoncooperpcola · #1 10-20-2013, 02:47 AM

I don't know alot about I/Os. But am learning about them at my class. But I did help with one job like this on a 4.3 Alpha setup. Our instructor told us exactly what Ferm and Spare have said. We actually took the out drive apart to replace the trim and limit switches. Ended up doing the bellows, gimbal bearing, new shift cable, and a few other small things.

spareparts · #2 10-20-2013, 08:35 AM

flat rate time on trim senders used to be 3.2 hours from Merc, I figured a way to replace them in 30 minutes. I think Merc only give 1.5 now

THEFERMANATOR · #3 10-20-2013, 09:41 AM

Quote:

Originally Posted by spareparts

flat rate time on trim senders used to be 3.2 hours from Merc, I figured a way to replace them in 30 minutes. I think Merc only give 1.5 now

If the wiring harness's hadn't been so bad, I would have just snipped them off and heat shrink butt connectored new ones on. I went out last night and found out why the shift cables weren't replaced, they were threaded in so tight that the brass cable end was snapped off inside the threads. Si I have a FUN job ahead of me getting brass out of aluminum hopefully without damaging the threads.

spareparts · #4 10-20-2013, 11:15 AM

do you have the Mercruiser special tap for the shift cable boss. Its a non tapered pipe thread, Mercruiser only. That brass is hard to drill out. Teh key to replacing the trim sensors without taking anything apart is a snap on swivel socket, loooong 1/4 extension, some one to pull the wires thru for you and(trade secret) super glue the two halves of the plastic pieces that stop up the hole in the transom plate. You have to work from one side(port works best), so you have to drape the wires over from the other side. If you super glue the two halves together, you can pull them both in place at the same time, use a small tie wrap to keep the retainer in place till you get a screw in it.

BTW, Ferm, you had a 6.2 Mercruiser at one time. I just pulled one down and I'm thinking about using the cam in my buggy. The numbers off the cam are 862562(merc number) and 10505L(cam manufacture). From what I've found, they say its a crane cam 104224. You know any different? I'm planning on running 1/6 ratio rockers with it

THEFERMANATOR · #5 10-20-2013, 06:17 PM

Quote:

Originally Posted by spareparts

do you have the Mercruiser special tap for the shift cable boss. Its a non tapered pipe thread, Mercruiser only. That brass is hard to drill out. Teh key to replacing the trim sensors without taking anything apart is a snap on swivel socket, loooong 1/4 extension, some one to pull the wires thru for you and(trade secret) super glue the two halves of the plastic pieces that stop up the hole in the transom plate. You have to work from one side(port works best), so you have to drape the wires over from the other side. If you super glue the two halves together, you can pull them both in place at the same time, use a small tie wrap to keep the retainer in place till you get a screw in it.

BTW, Ferm, you had a 6.2 Mercruiser at one time. I just pulled one down and I'm thinking about using the cam in my buggy. The numbers off the cam are 862562(merc number) and 10505L(cam manufacture). From what I've found, they say its a crane cam 104224. You know any different? I'm planning on running 1/6 ratio rockers with it

These were definitely tapered threads in it, so somebody else had gotten to it before me. I got it drilled out till I could see threads in part of the brass, and then used a punch to peel it out. It was so corroded that there wasn't hardly any threads left to it, so I will have to use LOTS of Teflon to seal it up.

The engine I had was the 5.7L 315HP ski engine. Not sure about the cam shaft and higher ratio rockers. Maybe call CRANE and see what they say about it.

spareparts · #6 10-20-2013, 06:20 PM

sorry, i forgot to mention, the tap is to re-tap the older bell housings from the back side(transom side) to take the new style shift cable that threads in from the drive side. I run the tap thru to clean out the threads in all of them

THEFERMANATOR · #7 10-20-2013, 10:10 PM

Quote:

Originally Posted by spareparts

sorry, i forgot to mention, the tap is to re-tap the older bell housings from the back side(transom side) to take the new style shift cable that threads in from the drive side. I run the tap thru to clean out the threads in all of them

Yep, I read it in the service manual that the pre-alphas threaded in from the back. I now remember why I hated working on I/O's. I was trying to get the gimbal bearing out after fixing the bellhousings, and kept hitting my head on the swim platform. Not to mention the fun of getting down into the bilge and get the raw water pumps out to change the impellers. I couldn't imagine SEARAY fitting twin 454's into this boat and expecting somebody to work on it without pulling the engines out, but in 90 they offered twin 454's in this same boat that in 96 came with twin 135HP 4 cylinders.