Broken gear box

james22sniper · May 06, 2012, 09:12:27 PM

Had a catastrophic internal bearing failure resulting in a metal fragment punching thru the case. Be interested to hear if anyone has had a similar experience and has had the hole welded up. Thanks!

james22sniper · May 06, 2012, 09:31:17 PM

Photo hopefully

james22sniper · May 06, 2012, 09:32:29 PM

And another

hayesey · May 07, 2012, 01:03:52 PM

just swap the casing it's only the clutch housing side it's just ten or so bolts to remove it. Presumably you're taking it apart to replace the bearing and clean everything anyway?

Nick_S · May 07, 2012, 01:11:53 PM

I have spare gearbox casings if you need one

As Hayesy says, if you do this you'll need to replace at least all the bearings on that side of the gearbox. Ideal time to get the whole box overhauled anyway if you can afford it!

james22sniper · May 07, 2012, 02:08:16 PM

Hi.. How much for your outer casing and location? Thanks!

Nick_S · May 07, 2012, 02:22:55 PM

Quote from: james22sniper on May 07, 2012, 02:08:16 PM
Hi.. How much for your outer casing and location? Thanks!

PM'd

Oli b · May 07, 2012, 05:46:13 PM

Similar hole happend to me but somthing went in rather than came out

james22sniper · May 07, 2012, 05:58:21 PM

Did you get it fixed?

Etches · May 07, 2012, 07:02:21 PM

I had a more serious hole when i bought a g40 box which the driveshaft had popped out and smashed the bell housing , as above just change the housing

james22sniper · May 08, 2012, 05:52:07 PM

:-[Took the box to a local gear box specialist who wrote it off so now looking for a whole box!

Oli b · May 08, 2012, 07:37:02 PM

Yeah had the hole welded up as i have acsess to a alloy welder just gotta re fit it when i get the time Other than let all the gearbox oil on to the clutch it diddnt do any further damage luckly

Etches · May 08, 2012, 08:36:57 PM

Saying that i had to change the diff as there were chunks out of it but that was it, pure luck though!

hayesey · May 09, 2012, 09:32:56 AM

Quote from: james22sniper on May 08, 2012, 05:52:07 PM
:-[Took the box to a local gear box specialist who wrote it off so now looking for a whole box!

did they say why? Do they realise that proper G40 boxes are like hens teeth to find?

Really, unless it's absolutely shat itself and teeth on gears are all knackered then it's probably going to be more worthwhile rebuilding it and having a nice fresh G40 box than waiting weeks/months/more?! to find another ATV for £200 which is unlikely to have been rebuilt. If they have thought "oh it's only a polo gearbox, there's loads of these about for £10 each", then they might just think a basic rebuild isn't worth it.

james22sniper · May 09, 2012, 10:04:18 AM

Turns out it was not a G40 box but just a standard 1.3 Polo... apparently. Many teeth stripped and bearings knackered! The guy said not worthwhile. But then how would you repair a gearbox if not by stripping it down and replacing broken gears and bearings??? But also... if as it turns out it is nothing special, he is probably right.