Knock
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ok, so what if I release the CV from the hub….previously, there was zero rumbling. How can I diagnose the gearbox?
**just checked this post
http://www.uk-mx3.com/forum/viewtopic.php?t=1848&highlight=gearbox
see the pics from Marco, showing the clip in the green cup? Mine doesnt haveone...... I can pull the whole thing out easy, could this be causing an issue??
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that clip just keeps it in around full lock.
This sounds like a bigger mechanical issue to me. Any mechanic mates? Really hard to diagnose this unusual issue on the net.
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mechanic mates are one thing I dont have :(
I may have to bite the bullet, and either get a mobile guy out, or have it trailered down to the local garage. I just have this desperately bad feeling, that im going to lose my car, and i have only had it less than a year, hardly even driven it.
not happy.
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Wish I could help more! You should consider writing a synopsis of your problems, and links to videos (esp that one of the gearbox moving side to side) and putting it on mx-3.com. There's some engineering minds on there who may be able to spot the problem in an instant.
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cheers Marco, I really appreciate everyones input so far, but I will do what you suggest, you never know, but in my head, I think something very bad is wrong!
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everytime i see this thread lit i am praying for good news for you mate
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:(
no useful help from mx3.com yet. One chap suggested its the wrong CV, so I am going to attempt to fit my old one, to see what happens….!
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If you're leaving the CV cup in, and have the questionable driveshaft out see if your gearbox is still shuddering from side to side. If it does, you've a problem with the other side or your gearbox is dead.
If it doesn't the problem must be the length of the driveshaft, the tripod inner cv, the cv cup, the outer cv joint or it's seating or the actual geometry (hopefully that's resolved after the BJ).
On the upside, this all good experience. Next stop 2.5 engine swap I think ;)
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cheers Marco, all logical stuff, so I will try it this weekend…!
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HI chaps,
so I quickly did some checking this morning. I detached the hub from the shaft, ran the engine, no knocking. What I did notice though, that even though the passenger side was spinning, the drivers wasnt, and when I put into gear the drivers side still didnt move, no knocking, but no moving, but is that because I have detached the passenger drive shaft (cup still in the gearbox)?
is any of the above conclusive? I added these pics
http://s176.photobucket.com/albums/w163/clivjoo/pissing driveshaft/
shows the old and new cv, the end of the drive shaft which I am not sure is worn or not!
i havent put on the old CV yet, not sure there is any point?
**one other point, when removing the CV, it easily popped out of the hub, despite the circlip being in place…
***oh and also, when I compared the new and old cv, I can hardly move the bearings in the new joint, but can easily move them in the old one....
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the last comment is right, you should not have much movement by hand with the new bearings. when i replaced mine, the old one was like stiring a coffee lol. the new one i had to use quite a bit of force to move the shaft around. however, once it was in i could not get it back out again easily.
have you tried removing the clip as when i had mine it was already inside the new joint (I couldnt get the new one on as i was trying to save my old clip and reuse) once i removed the old clip it slotted into place nicely due to it already having a brand new clip inside all prepared :)
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cheers Daniel.
well, I went back out and decided I needed to try the OLD cv, and put it all back together to verify the state of my gearbox. As I said, OLD cv bearings move around quite freely, so I hammered the old cv back onto the shaft (with circlip in place) and as I finished doing that i thought….shit...I never hammered the new one on...anyway, carried on and put it all back together. Did soem inconclusive testing on the jack stands, but the rumbling noise has gone. Tightened everything up and tested properly up and down the driveway, yes, its driving!
as my car isnt taxed, I was restricted, but as the driveway is on two levels and is quite heavy on the steering etc, i figured its a safe test. Did this for a good 20 mins, up and down, left right etc etc, got a few creaks here and there but still have drive. NO rumbling, no spinning, just normal operation.
:)
so, bascially, apart from new BJ and Tie Rod end, I have my old CV back on, and everything is as it was. No knocks though, just a few creaks but understandable as some of the ground is rough and car hasnt been driven for over a month now.
I need to TAX the car so I can test it properly, if it breaks again, I will bite the bullet and AA the car to the garage and get it repaired.
I think what I have learned is, I should have changed the whole shaft in the first place. I think the CV I got isnt 100% right (compared side by side, the new one seems bigger, see:
so I wonder if it was simply forcing everything out of line, everything was too tight maybe I dont know…!!!
I still feel that I will need a new CV perhaps, but on the other hand some proper driving and full lock tests will prove that either way...
well, I feel slightly more relieved now, im 99% sure gearbox and clutch are fine...finegrs crossed anyway.
I am sure this whole thread isnt complete, but thanks so much to everyone for helping me out, youve been very patient and knowledgable and I REALLY appreciate it!
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that is some good news mate, at least the car isnt going to heaven yet lol. the CV joints look very similar to me bud. if they were level i would say that, if anything, the older one looks slightly bigger.
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ok, got my Tax today, so took car for a drive tonight, all seems well! no knocks or noises, just smooth ridin'!
Going to drive into work tomorrow, then on Saturday re check all the bolts are tight, sorted!
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Blimey thats great mate, chuffed for you :)
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cheers!
got into work today, very smooth. There is a small rumble underneath you can only just hear, but I dont think its related to anything that I have done as it was there before, might even be something in the boot, anyhoo, all was well!!!
im chuffed.
all I want to do now is recheck the tightness of bolts tomorrow, and I will be confident, but it feels great. My tracking is slightly out the other way now, so thats not bad at all. I am a happy man!!
I am not 100% sure what I have learned from all this, but I am suspicious that I didnt fit the new CV joint correctly originally, which was probably to blame for the lack of drive. I am not going to change it now, as the old one was originally missing the circlip, now it has one, its perfect, so I am leaving well alone.
I reckon I made the mistake with regards the new cv, I dont think I fitted the drive shaft into it fully, I did bash it on, but I dont think I bashed it on hard enough, so I suspect it simply popped out a bit when I tried to drive.
ah well, lessons learned an all that!!
