Noisy 3rd gear

Post by **davidwarren** » Sun Jun 10, 2007 11:17 pm

Hi, my 1968 moggie gearbox makes a horrible rattling noise when in third gear. It's sounds ok in every other gear, just 3rd is the problem. What could this be?

Post by **bmcecosse** » Mon Jun 11, 2007 7:32 am

Probably terminal damage to mainshaft bearings and/or laygear/layshaft and it's bearings. Start looking for another box urgently!

Post by **WPR678B** » Mon Jun 11, 2007 9:11 pm

My sisters had similar symptoms the other week and it turned out to be a chipped tooth (well one missing and another chipped!

) on third only. As you say, fine in all other gears, just in third! Needless to say the gearbox was changed!

Post by **bmcecosse** » Mon Jun 11, 2007 9:40 pm

I don't understand how that can happen - unless a 'foreign body' goes through the box - because the Third gears run in mesh all the time. Most likely source of fb of course is from First or Reverse gears - which can shed teeth if not treated with respect.

Post by **Rob_Jennings** » Mon Jun 11, 2007 9:50 pm

sound liek the fate that my gear box suffered.

there was always a bit of a wine in 3rd and then one day all of a sudden it was impossible to drive in 3rd so i got the box reconditioned.

it might last a long time before it goes, but best be prepared with a spare box hopefully you have plenty of time to find a cheap one.