Transmission problem

[Dingeldeins]

Having Problems to pull out the Axels off the differential. the small planet-wheels are cracked. Got an new used Transmission from eBay, but i Need the Axels from the old one.

anybody out there, who can help?


Thanks Achim

 

[varesecrazy]

Hi. On what vehicle?

 

[Pugglt Auld Jock]

Hi! As already asked, what vehicle? But I'm also wondering, if the shafts are still installed then I would guess you haven't stripped it down at all yet? If so then how do you know the planet (I would call them "Bevel"?) gears are cracked? I'm not aware of this being a common or known fault?

If it's something like a Punto/Panda then they are held in by "snap" rings. All you need is a tyre lever or large robust screwdriver. Put the tip under the edge of the inner driveshaft joint and lever against the gearbox casing. Usually a quick jerk works better than a slow increase in pressure. I would strongly recommend a Haynes manual (or similar) as there are often subtle differences. For instance on my boy's Punto they recommend "snapping" the Near Side (NS) joint out in the way detailed above, but using an exhaust clamp as a type of puller/press to remove the Off Side (OS) one. (haven't had to do an OS one yet) The Panda, if my memory isn't playing tricks on me, (not going out in the rain to look under "Becky") has a support bearing on the OS shaft which complicates things a little. The Skoda and SEAT vehicles we have in the family have an inner joint which is bolted together with long "Allen" bolts. The joint is first dismantled - messy grease - which then lets you access the cover plug under which is the bolt which holds the flange to the diff output shaft. Great fun if you don't know there is a quite strong spring behind it!

So, buy a manual. Have a look around our forum, someone has probably covered this subject somewhere in here. On the other hand, if the gears are really cracked/broken into pieces, all bets are off as the snap rings could be jammed or even bits of gear wedged in. If all else fails, you can usually drop a 'box out with the shafts still fitted after freeing the CV's from the hubs. (done this more than once - good way to avoid oil all over the place!) I haven't had to do this on any of our fiats yet but it looks possible. Then you could maybe dismantle the casing on the old box and work at releasing the shafts internally?

good luck with it and do let sus know how you get on, won't you.
Jock

 

[Dingeldeins]

Hi,
it´s a 2001 Brava with 1.2l egine, 5 Speed Manual Tranny and hydraulic clutch.
On the old tranny I opened allready the differential, push out the rod on which the small planet-wheel are Held by breaking the housing. But the big planet-wheels won´t come off the axels, so the axels don´t get out.
I try to load up some pics!


Thanks
Achim

 

[Pugglt Auld Jock]

Hi,
it´s a 2001 Brava with 1.2l egine, 5 Speed Manual Tranny and hydraulic clutch.
On the old tranny I opened allready the differential, push out the rod on which the small planet-wheel are Held by breaking the housing. But the big planet-wheels won´t come off the axels, so the axels don´t get out.
I try to load up some pics!


Thanks
Achim

Oh deary me, that's a right mess isn't it! Those inner joints look to be exactly what I thought - retained by snap rings. The inner end of the splined shaft from the drive shaft has a groove round it which the snap ring sits in. The inner end of the bevel gear is tapered. If you look very closely you can probably see this. Anyway, the idea is that the ring is guided by the taper to compress into the groove as you lever the joint out. Sometimes the ring is designed to stay on the shaft, sometimes it stays in the gear, not certain which way yours is. It makes no difference, if you apply enough force to the shaft the theory is it should pop out!

The CV joints (outer joints, on the wheel hub end of the shaft) are retained, on many vehicles, (but not all Vauxhall do it with circlips for instance) in the same way and I remember a particularly stuborn one on a Mini which jammed up and I hit it so hard that it cut up the snap ring into little pieces! The shaft was hopelessly damaged and a whole new shaft had to be ordered. Looking at the state of those gears I bet there is metal swarf in the splines of the shafts which has jammed up the snap rings so they can't compress into the grooves. If you have compressed air I would try blowing it out first but I suspect you are just going to end up having to hit it very hard with a nice big hammer. How about reinstalling the pinion shaft without it's gears and using a chisel as a wedge between it and the end of the splined drive shaft? Looks like the shaft is proud of the gear by enough and once the shaft overcomes the snap rings it should move easily?

Good luck! let us know how it went won't you?
Jock

 

[Dingeldeins]

Hi Jock!

Your advice was a good help!

Got the drive shafts out and into the Exchange part.
But after one night of Sleep I got some doubt. The exchange trans I bought has much more miles on then the original. Only the diff has a damage.
So I decided just to change the diff. So everything had to be changed bach again. Now the original trans with the exchage diff is back in the car.

Luckily my two boys were helping!


Now I have to put the batterie, some wires and hoses back in place. Get her off of my home made ramp and hopfully she makes her way back to the street.


So Long for now

Achim

 

[Pugglt Auld Jock]

My turn to say sorry Dingeldeins! I've been following this thread with great interest and would normally have checked it twice a day. But my oldest boy asked me to check out his 1.9tdi PD Fabia Scout as it was "limping" with dash lights showing. I'm sorry to say the outcome has not been good (too expensive to repair) and we have been looking for a replacement vehicle for him. Not at all what you want in the run up to the expenses of Christmas! The most sickening aspect is that we put a cam belt kit on it only a short while ago! Ah well, c'est la vie I suppose?

I'm so pleased for you, to hear that things seem to be working out for the best, and very glad that I was able to help just a little. I know that feeling of anxiety and doubt only to well. It usually hits me at around 6.00 in the morning and is getting worse as the years are stacking up!

I'll keep my fingers (and toes if you like) crossed for good luck that it all runs well when you take it back onto the road.
Kindest regards
Jock