cottamlee Posted July 26, 2009 Share Posted July 26, 2009 hi there. my dad owns a 1995 discovery auto what we bought off ebay last december with a nackered gearbox. we bought it and whiped the gearbox straight out as he was building it to be a tow vehicle. so we exchanged the dead gearbox with ashcroft transmissions and fitted a recon gearbox. The disco tows a car trailer with a special welfare unit for people working on the banks of rivers and such, so the disco was needed to be able to tow up banks. anyway, we must have done 50 miles after fitting the gearbox before its first tow to run the new box in. the gearbox was fine for the first tow which was around 100 mile journey. but on the second time towing something the gearbox started making a horrible juddering motion when setting of until the speed picked up over around 15mph. we rang ashcroft and they advised us to take it to a garage they recommended to get it checked out, so we took it. the man at the garage said it was the transfer box and/or the front diff. we changed both of these and still no look. we have allready checked all of the prop shafts and brakes etc. the man at ashcrofts told us to take the gearbox out and he would arrange for someone to pick it up so they could have a look at it, and so they did. after a week the gearbox had arrived back to us so we got it fitted back in. BUT THERE WAS STILL THE JUDDER. we know its the gearbox because when put into P or N the judder goes so it isnt the engine. we have checked the tourque converter plate and it had a new torque converter with the first box change. any idea's lee Quote Link to comment Share on other sites More sharing options...
BogMonster Posted July 26, 2009 Share Posted July 26, 2009 Handbrake binding? Does it judder in drive and/or reverse at rest, or only with the vehicle moving? If only when moving then I'd bet on it being the handbrake. Slacken off the adjuster and take it for a run. If that doesn't sort it, is the oil level ok in the gearbox? Are you sure it isn't some completely shot suspension bushes causing a sort of axle tramp effect? Rubber doughnut on the rear propshaft? Engine and gearbox mounts all OK? Quote Link to comment Share on other sites More sharing options...
cottamlee Posted July 27, 2009 Author Share Posted July 27, 2009 Handbrake binding? Does it judder in drive and/or reverse at rest, or only with the vehicle moving? If only when moving then I'd bet on it being the handbrake. Slacken off the adjuster and take it for a run. If that doesn't sort it, is the oil level ok in the gearbox? Are you sure it isn't some completely shot suspension bushes causing a sort of axle tramp effect? Rubber doughnut on the rear propshaft? Engine and gearbox mounts all OK? checked handbrake, still judders judders also when stopped but in gear all new polly bushed done the oil twice changed rubber doghnut and all mounts ok. as you can see, its starting to be a real ball ache Quote Link to comment Share on other sites More sharing options...
vougese39 Posted July 30, 2009 Share Posted July 30, 2009 is the timing out? is the flywheel ok the flex plate no crack's? are sure it is not a missfire in the engine or a loose mouting? if ok slacken the engine and the gearbox mountings and drive then allow to rest 5 min then retighten as sometimes the mounting twist and don't like their new position and cause vibrations Quote Link to comment Share on other sites More sharing options...
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