transmission slipping

How long was your boat sitting?when was the last time your trans fluid was drained?I would drain the fluid,refill to proper level and test.If slipping still occurs,you have a front seal leak,and possibly the start of pump failure.Good luck

scott colby wrote: Way over filled to the top of the stick. Doesn't skip anymore. Any problem with doing this?

I'm not "way" overfilled but do run my velvet drives just over the full mark to avoid skipping. A fresh rebuild shouldn't be skipping as easy as yours seems to. It'll spill out the vent if it gets too full anyway.

Okay, so put the 'brute' in the force I'm using. Got it! I whacked it pretty good with a hammer and socket extension, but was worried about possibly cracking the pump. I also noticed a screw which you can see at the 5 o'clock position in the photo. I have not been successful in getting that out. It's flat head and small. I'm worried about stripping it, and being so small, figured its probably holding some pin in the pump, not structural. It doesn't appear in the schematic either, which is frustrating.

Pete - I think you are confusing the second poster with the leaking transmission with the first poster who had the slipping transmission.

To really get into the transmission you have to have a press and buy or make a few special tools but it's no more rocket science than anything else. I am on my 4th rebuild in 3 weeks (no they arent all of the same transmission). None of them have the screw that is on the pump in that picture. and there isnt really anything there that needs to be pinned. My guess is that there was porosity in the casting found after machining and they drilled and pinned it is a repair, or it is something only on earlier tranmissions.

If you are not getting into the forward clutches or piston that elimnates a lot of the chances to destroy snap rings and the need for a few tools for the press.. however you wont be able to change the seal around the forward clutch piston.

Pay close attention to the manual and take a few pictures.. IIRC the first time I did one I had to take it partially apart and put it back 2 or three times to clear the work bench of leftover parts.   

Slippage was me, in addition to initial poster. Sorry for the confusion. I figured both of us could benefit from the groups wisdom given our similar tranny issues.

So, my boat sat for 5 years. I got the engine running like a top, but first ride heard grinding coming from the tranny and slipping out of engagement. It would engage when I added fluid, but was leaking like crazy, then would slip as the fluid ran out. I figured it was probably just the front seal. I was just going to replace the front seal and pump seal and see if that would do it. I wasn't planning on a complete rebuild. If you guys were trying to freak me out, consider your mission accomplished...

All that gets bathed in fluid- no worries