cyauch
Petty Officer 3rd Class
- Joined
- Jul 10, 2020
- Messages
- 91
Two weeks ago hit something underwater harder than i;ve ever hit before. Noticed no vibration or steering issues. And after a quick check of the props and skeg figured all was good and i was lucky....so i thought. Later in the day noticed auto bilge kick on, and 10 minutes later kick on again. turned engine off, lifted access, and saw that water rose slowly until pump kicked on. then i hear what sounds like water dripping / slow streaming in. Hard to describe the sound, but imagine your sink stopped up and a little trickle of water comes out of faucet and lands in the stopped up water.
Next day, filled bilge are with water and noticed water leaking past transom shield on right / stbd bottom. Close look showed a 1/16 " gap between the shield and the hull but was hull flush everywhere else. I haven't confirmed yet, but i think the inside plate at the bottom of the transom may have deformed a little. Saw a couple video's and posts where most say hammer it flat and run with it. I may try that if that's the true problem and not something else. Still, i've run into several other 'problems' i need advice on please.
So, pulled the out drive and noticed it appears previous owner wasn't doing yearly maintenance or checks on the gimbal bearing. that bearing makes noise when i turn it by hand and some water did come out the bellows. I do plan on replacing the bellows and bearing. In fact, I'm gonna pull the entire gimbal housing off and clean it up also so i can make sure i get a good seal on the bellows.
The u-joints are kinda rusted up, but look good otherwise. Should i replace? From what's seeing, the u-joints are not sold individually but i have to get the entire shaft? Read a few others posts on here saying different but I'm a noob to VP's
So i have the OD off, and engine is ready to pull. However, i could not get the top nuts to the mounts off. In fact, one was pretty corroded and seemed to start rounding so i stopped and pulled the two hull mount lag bolts. they came out clean and easy
My thought it to replace the mounts with engine out (understood engine alignment required) rather than fight with it for hours only to have to pull the lag bolts after rounding the nuts anyway
I guess after all this
1. Any special alignment procedures i need to perform after -reattaching the transom shield to the hull? What specifically do i enter for the model / ID of the transom shield and gimbal housing? my OD is a DP-SM per the label plate, but only the transom shield and gimbal housing show up when i look at SX-M, -MHP etc. Based on on what i read, SX is same for all OD's?
2. Working on older Mercs, there was also a new gasket that mated between the outdrive and the gimbal housing. I don't see this in the VP service manual for the OD. I assume a liquid gasket type material is used, but i don't see it specified in either the gimbal / transom sealant and gasket diagram or the upper gear housing to gimbal housing sealant and gasket diagram?
3. Best way to re-bed engine mounts back to hull? My thinking was clean up the holes of prior sealant, wipe and clean the area, and put 4200 on the shoulder area of the lag bolts as well as on the bottom the engine mounts then bolt them down. Didn't see any evidence of sealant inside the holes or on the lag threads so kinda leary about adding any. And i can't find anything anywhere about torque. would sure hate to strip them out. Any suggestions? Snug should be ok right?
Again, thanks to anyone who can offer up info and / or suggestions. I've tried to search and compile info from here and other sources, and i love to rebuild / build things, when it comes to a boat, what may work in a non-boat environment may not work in the wet world
Next day, filled bilge are with water and noticed water leaking past transom shield on right / stbd bottom. Close look showed a 1/16 " gap between the shield and the hull but was hull flush everywhere else. I haven't confirmed yet, but i think the inside plate at the bottom of the transom may have deformed a little. Saw a couple video's and posts where most say hammer it flat and run with it. I may try that if that's the true problem and not something else. Still, i've run into several other 'problems' i need advice on please.
So, pulled the out drive and noticed it appears previous owner wasn't doing yearly maintenance or checks on the gimbal bearing. that bearing makes noise when i turn it by hand and some water did come out the bellows. I do plan on replacing the bellows and bearing. In fact, I'm gonna pull the entire gimbal housing off and clean it up also so i can make sure i get a good seal on the bellows.
The u-joints are kinda rusted up, but look good otherwise. Should i replace? From what's seeing, the u-joints are not sold individually but i have to get the entire shaft? Read a few others posts on here saying different but I'm a noob to VP's
So i have the OD off, and engine is ready to pull. However, i could not get the top nuts to the mounts off. In fact, one was pretty corroded and seemed to start rounding so i stopped and pulled the two hull mount lag bolts. they came out clean and easy
My thought it to replace the mounts with engine out (understood engine alignment required) rather than fight with it for hours only to have to pull the lag bolts after rounding the nuts anyway
I guess after all this
1. Any special alignment procedures i need to perform after -reattaching the transom shield to the hull? What specifically do i enter for the model / ID of the transom shield and gimbal housing? my OD is a DP-SM per the label plate, but only the transom shield and gimbal housing show up when i look at SX-M, -MHP etc. Based on on what i read, SX is same for all OD's?
2. Working on older Mercs, there was also a new gasket that mated between the outdrive and the gimbal housing. I don't see this in the VP service manual for the OD. I assume a liquid gasket type material is used, but i don't see it specified in either the gimbal / transom sealant and gasket diagram or the upper gear housing to gimbal housing sealant and gasket diagram?
3. Best way to re-bed engine mounts back to hull? My thinking was clean up the holes of prior sealant, wipe and clean the area, and put 4200 on the shoulder area of the lag bolts as well as on the bottom the engine mounts then bolt them down. Didn't see any evidence of sealant inside the holes or on the lag threads so kinda leary about adding any. And i can't find anything anywhere about torque. would sure hate to strip them out. Any suggestions? Snug should be ok right?
Again, thanks to anyone who can offer up info and / or suggestions. I've tried to search and compile info from here and other sources, and i love to rebuild / build things, when it comes to a boat, what may work in a non-boat environment may not work in the wet world