Trans slipping?

mbshaw88 wrote: No I didn't, but I still have it. Replacing the trans cooler is required for the transmission warranty

Matt,
Check it anyway. It would tell you if it was the source of the water but as mentioned, it didn't look like you had very much in the trans.

Matt,
Did you have the opportunity to pressure check the trans cooler for leaks before you bought a new one?

there is more to it than just replacing the parts, you must find out why the pack slipped, you can run maple syrup in these tranny's and they wont slip, don't assume the water and oil made it slip because it only looks like you may have only a teaspoon of water in there. btw, those are return springs and not pressure springs lol,
im curious on what you may think made the transmission fail? there is a reason and that's what we need to hear.
do you see those 2 bushings down in the planetary? I call those IRA's, because I have seen at least 30 transmissions that were parts swapped with 400.00 bucks, put back together and got smoked the first run out...So, I would be curious on why the trans failed, there is a reason....IRA meant I could retire on the money that I have made on those 2 dollar bushings, it doesn't necessarily mean they are bad, im just throwing that out there

Has anyone had problems with the Sachs plates fitting? The shop said they used to use them all the time and then they made some design change where the rivet heads got bigger and now the plate doesn't fit as it should. Anyone know something about this?

Well my transmission must have had water sitting in it for a while. There was a lot of rust build up, and the fluid had that burnt strawberry milkshake color. It also looks like someone replaced the seal before as there's multiple wear locations that are pretty rough.

I'm going to replace the trans cooler if that's where my water has been coming through.

The clutch plates are complete garbage, and a couple pressure springs were broken

Well I got the trans and damper plate off last night without any issues. There were a lot of great threads on here that detailed what to do, so it only took us about an hour and half.

There was some trans fluid collecting at the bottom of the bell housing. Also the damper plate was held on with 5 bolts rather than 6. It looks like one of the bolts was broken off in the flywheel

So while the trans is getting repaired, I'm going to take the flywheel off and see about getting that bolt drilled out of there. Yes I am absolutely replacing the damper plate.

mbshaw88 wrote: The only other thing I can think of is if I put the shift lever linkages together incorrectly or with not enough "throw". I took the gunnel pad off to mount some speaker boxes. In order to take the driver side one off I had to remove the shift lever, which forced me to disassemble all the linkages. I took pictures and videos took make sure I assembled it correctly. But if the shift lever cable wasn't adjusted, maybe I'm not fully engaging in to the "F" position? The lever moves as it should, I'm just thinking maybe the threaded adjustment got set so my engagment isn't 100%. I know I'm probably grasping at straws, but it's worth a look.

The trans is hydraulic. Ether you route oil pressure to the clutch piston or you don't. Mechanical linkage adjustment isn't a factor.

Thanks for all the advice guys, definitely appreciated!

I will call fantastic finish this week and find out the pricing details. Is taking off the trans detailed in the reference section pdfs?

I have rebuilt wet clutches for dirt bikes and motorcycles but if the consensus is send it away, I'll take that route. I'd hate to get in over my head.

Once they slip they are done,the clutch plates glaze. Not any special tools needed but what you don't have are the tricks to the trade. I doubt you find anyone good in the area to do it but I'd bet you could find someone to take your money. Many have used Fantastic Finish Marine with excellant results,the former owner is a member here. Pull it out,put it in a milk crate and UPS it out. Always change the dampner plate too. You beat me to it Mark!

I'm having issues with my 83 SN where the trans slips and my engine revs up without me going anywhere.

It started whenever I would push the throttle forward too fast. I could gradually increase speed up to about 25 mph, then at some point it would slip and I'd have to decrease down to idle. Now it seems like I can't even get passed a trolling speed.

I topped off the trans fluid level, and checked it multiple times while driving to make sure it was always at or above the mark.

Questions:
1.) What simple tests can I do to determine/isolate the problem?
2.) Can you add a gauge in the trans line to check the operating pressure?
3.) If it's in need of a clutch/seal replacement, is this something a mechanically inclined person could do themselves? What specialty tools are needed?
4.) If its better to take it to a marine mechanic, does anyone have a recommended shop in the northern Illinois/Chicagoland area?

I did not see any obvious leaks in the hydraulic system, but I will take a closer look this week.