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84 Nautique possible transmission problem |
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knewt 
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Joined: January-27-2007 Location: Florida Status: Offline Points: 39 |
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 Topic: 84 Nautique possible transmission problemPosted: March-20-2007 at 1:07pm |
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Hi,
Back on this project after some time away from it. Had a previous thread in the Boat Maintenance forum. Problem - no forward acceleration when throttle is applied. Boat goes into gear and moves forward but will not go any faster once additional throttle is applied. Transmission is 1:1 Velvet Drive Reverse works fine. Accelerates fine in reverse. Transmission has been removed, bench tested with a drill and does not slip in forward or reverse. Dampener plate had a small crack in one spring and the center hub was loose. Replaced dampener plate with a new one. Reinstalled transmission and still have the exact same problem and symptoms. The original problem occurred instantaneously in the process of pulling a skier. No warning symptoms were detected. The transmission cooler did have partial blockage from weeds (50%). The transmission fluid has been changed now but had been neglected. Fluid was a brownish red color. Other symptoms The throttle does not click really nice into neutral. It just sort of slides through the neutral position. After this recent water test, transmission fluid was noticed (small leak) coming from the joint where the forward/reverse mechanism is located. Any other advice before I have the transmission rebuilt? Is the internal engage mechanism repair a subset of a complete transmission rebuild? |
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3333 |
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Posted: March-20-2007 at 1:39pm |
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No. Yes. Forward plates are worn down or forward piston seal is bad, i suspect. You could diagnose a little more with a pressure gauge but either way its going to come apart.
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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79nautique
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Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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Posted: March-20-2007 at 2:23pm |
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sounds like it was out once already why didn't you go ahead and rebuild it then, wanted practice taking it out I guess.
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Justin131313
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Joined: March-09-2007 Location: United States Status: Offline Points: 27 |
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Posted: March-20-2007 at 6:12pm |
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I like 79s comment. Made me laugh. But at least now you will know you arent wasting time rebuilding it.
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79nautique
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Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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Posted: March-20-2007 at 6:23pm |
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it's my understanding that the B-W tranny's work and they don't and if something isn't workng right then it needs rebuilt. A funny noise/sound, getting hot, then ya might not be the tranny but works fine in rev but no forward power, needs rebuilt.
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Randy_in_Ohio
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Joined: September-13-2006 Location: N. Canton, OH. Status: Offline Points: 1891 |
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Posted: March-20-2007 at 6:26pm |
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You said the fluid was a brownish red color.
Did it look like this? 
Water mixed with tranny fluid 
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Guests
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Posted: March-20-2007 at 7:58pm |
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randy-thats not from your boat is it?...hmmm better fill and flush a few times before hitting the h2o...is that your 8.00 drill pump?
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knewt
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Joined: January-27-2007 Location: Florida Status: Offline Points: 39 |
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Posted: March-20-2007 at 7:58pm |
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Thanks for the input guys.
Randy, it wasn't quite that brown. I didn't take a picture but I think it was probably burnt rather than water but I will certainly have to keep an eye on it one we get it back together. Thanks, |
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Posted: March-20-2007 at 7:59pm |
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randy shoot me erics number i lost it!
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Randy_in_Ohio
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Joined: September-13-2006 Location: N. Canton, OH. Status: Offline Points: 1891 |
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Posted: March-20-2007 at 8:14pm |
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Ryan,
Thats the pump I was talking about. Thats what came out when I first got it. The previous owner left it in the water and the transmission got covered with water and it must have seeped in. I've changed it about 12 times. It seems fine. Eric seems to think I may be alright since it didn't run through too much. I guess we will find out this summer. I am going to change it again before I take it out, just because I have the dextron and it won't hurt. I think if you go to Eric's website his number is on there. I don't have it on me, it's downstairs. Call me if you need it. |
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eric lavine
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Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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Posted: March-22-2007 at 7:51pm |
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I think he has a different shade of brown...definitly forward clutches slipping and burning the oil, it probably smells fowl also, when drill testing you really cant tell if trans is slipping, no quick fixes. this just seems plan old wore out. all the orings are probably rock hard with flat spots and trans is not sealing internally and causing it to slip
Eric |
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"the things you own will start to own you"
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