AZGhost623 Posted July 10, 2014 Share Posted July 10, 2014 (edited) Swapped in an 81 5 speed into my 76 280Z replacing the 4 speed. Member Duragg rebuilt it while I watched and learned about a year ago (he has rebuilt many) Didnt hook up the driveshaft today since I wanted to check the new rebello engine out today and get it tuned... However, I quickly found fluid everywhere out the rear of the transmission where the drive shaft would go. Its got new rubber in there, so I didnt expect fluid to come out... Is this normal to leak without the driveshaft in? Second, tried putting my driveshaft in, and it wont go in. Tried it a few different ways, and doesnt seem to go, just gets stuck... Is the driveshaft collar the same? I thought it was from some other posts I found, but wanted to make sure. Splines look really good on the 5speed, better than what is on my 4speed. http://youtu.be/CSRruChHX2Q Edited July 10, 2014 by AZGhost623 Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 10, 2014 Share Posted July 10, 2014 Its got new rubber in there, so I didnt expect fluid to come out... Is this normal to leak without the driveshaft in? Second, tried putting my driveshaft in, and it wont go in. Tried it a few different ways, and doesnt seem to go, just gets stuck... Is the driveshaft collar the same? It's very normal. The rubber seals around the outside of the driveshaft sleeve yoke (the part that you stick in there, you're calling it a collar, also called a slip yoke). The sleeve yoke might be sticking because you have the seal (the new rubber) in backward. Quote Link to comment Share on other sites More sharing options...
AZGhost623 Posted July 10, 2014 Author Share Posted July 10, 2014 (edited) doh, its in backwards? if its in backwards, then its in backwards on my 4speed as well.... Edited July 10, 2014 by AZGhost623 Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 10, 2014 Share Posted July 10, 2014 I could be seeing it wrong in the video. The lips should point in toward the oil. Posted a picture from the manual. "Stuck" doesn't tell how far the slip yoke went in, if at all. Quote Link to comment Share on other sites More sharing options...
bfg Posted July 10, 2014 Share Posted July 10, 2014 Same thing happened to me when I picked up two used transmissions. I put them in my trunk thinking they were sealed but after an hour long drive home there was trans fluid everywhere. Smelled like trans fluid for months. They both had all necessary seals. Quote Link to comment Share on other sites More sharing options...
AZGhost623 Posted July 10, 2014 Author Share Posted July 10, 2014 I could be seeing it wrong in the video. The lips should point in toward the oil. Posted a picture from the manual. "Stuck" doesn't tell how far the slip yoke went in, if at all. Yep the lips point in, solid/one piece facing out. Quote Link to comment Share on other sites More sharing options...
beermanpete Posted July 11, 2014 Share Posted July 11, 2014 The seal looks correct to me. The seal has a small lip that faces the outside as well as the main seal that faces into the transmission. If I recall correctly the splines on the insdie of the yoke sleeve do not start until about 1 inch in form the edge. This allows the sleeve to engage the bushing befor engaging the splines. It could be hanging up on the splines. Make sure to have the transmission in gear so the output shaft does not turn while you rotate the drive shaft to align the splines. Quote Link to comment Share on other sites More sharing options...
AZGhost623 Posted July 11, 2014 Author Share Posted July 11, 2014 i got it in last night finally... wiggled and jiggled until it just would go anymore... pulled it back out, greased it up and and went at it again, and it went in a bit farther... so got the hammer out and pounded it in and its in... spins ok, no grinding sounds or anything so I think it was just a super tight fit since everything is new... however, my pounding put it in too far, and now its too far forward to mount to the diff... yanked on it a little and got it barely to budge, so ill be trying to figure out something tonight on getting it bolted back up... This wasnt supposed to be this hard.. of all things to be difficult the driveshaft was not on my list.... Quote Link to comment Share on other sites More sharing options...
logr Posted July 11, 2014 Share Posted July 11, 2014 It would be better to see what is so tight. The name of the part is "SLIP yoke" after all. You might pull the seal and see if it is still tight. A slip yoke that doesn't slip is not good. Quote Link to comment Share on other sites More sharing options...
tamo3 Posted July 11, 2014 Share Posted July 11, 2014 Did you use correct seal? Sounds like the seal is smaller. I rebuild tranny, but I did not have any issue. http://forums.hybridz.org/topic/111648-10-years-after-hybernation-75-280z/page-4 Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 11, 2014 Share Posted July 11, 2014 Did duragg install a new bushing in the tailshaft housing? The shiny metal behind the seal in your video. Maybe it's tight. You might see score marks on the yoke or the bushing if that's the case. The other possibility is that the end of the tailshaft got dinged up when the gears and bearings were being pulled. If it's a tight bushing you might have friction and wear problems since that's a lubricated bearing surface. If it's tight splines, maybe not, but it might put odd loading on your u-joint and differential pinion shaft. At the least, it would be good to know what's too tight. Most people wonder about how loose the slip yoke is on the tailshaft. It usually has a little bit of wobble to it. Quote Link to comment Share on other sites More sharing options...
AZGhost623 Posted July 11, 2014 Author Share Posted July 11, 2014 I asked him about the tail bushing, I dont think we replaced it, not sure if we knew it was replacable actually... I saw Tamo's pics and used that as a reference. When I was working out the driveshaft last night and used a paint pen to mark how far it went in on its own. After jiggling and wiggling it about it went in past the paint mark, and then thats when I got the hammer out. A few good wacks and it went in all the way. It still wiggles a tad, but its in there solid. Spins/turns very easy no rubbing/grinding sounds... Thats oil residue on the end, because I put some oil on it to try and help it slip in.. then I went with grease... when I went to put this back in... Since it spins freely and doesnt make any sounds when doing so, Im pretty sure its ok... it may just be all these new parts trying to seat well together... Should I pull it all out and inspect it further to see if anything got scored? Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 11, 2014 Share Posted July 11, 2014 (edited) Safe versus sorry. You might find that it's just a metal shaving in the splines or something like that. On the Z's, with the IRS, the splines don't move back and forth much, but if there's a foreign body in there it could do some damage over time. Not hard to imagine the yoke getting locked on to the shaft if material gets displaced from the rotational forces of usage. I would pull it, and examine every spline and groove, yoke and shaft, for a problem. Pick and file out the defects and it will probably slide right on like it's supposed to. Edit - also, getting all Newtonian, in addition to pulling and pushing on the pinion shaft and u-joints, there will be pulling and pushing on the tail shaft of the transmission. Just not a good scene. The parts aren't designed for that. Edited July 11, 2014 by NewZed Quote Link to comment Share on other sites More sharing options...
Leon Posted July 11, 2014 Share Posted July 11, 2014 It should be an easy fit, are you sure it's the correct driveshaft? Quote Link to comment Share on other sites More sharing options...
AZGhost623 Posted July 11, 2014 Author Share Posted July 11, 2014 It should be an easy fit, are you sure it's the correct driveshaft? Yeah I agree... according to articles on here its a direct fit... I counted the splines as well, 24 on current driveshaft and on new tailend of the trans and on existing 4speed... Yeah I guess a wire brush or something to clean it up. I was kinda dreading taking it back out and in again based on how much trouble it gave me... I have to stop at ACE and get some new lock washers for the bolts on the driveshaft, so Ill get a wirebrush and get it cleaned up... if I can get it out I did test it several times on the old 4speed, and it just slips on... figured new parts might be a tighter fit... Quote Link to comment Share on other sites More sharing options...
Leon Posted July 12, 2014 Share Posted July 12, 2014 Maybe pull the seal out and see how it fits to check whether it's the seal or splines? Quote Link to comment Share on other sites More sharing options...
AZGhost623 Posted July 13, 2014 Author Share Posted July 13, 2014 well i pulled it out after it sat all night... it came out relatively easy with some light taping from the hammer... used a wire brush on input shaft and tail shaft, and stuck it back in... I was able to get it in without the hammer, but it was still a super tight fit with some major tugging wiggling jiggling but no hammer needed this time... spun the drive shaft by hand a few times and seems ok... just a tight fit. ran the engine with it in neutral since its still up on ramps, and no leaks! I think it will be fine.. Quote Link to comment Share on other sites More sharing options...
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