Crunching Into Third

[Guest Eatontoomanygalaxys]

Spent all day yesterday sorting my AC compressor and aux belt problem and got back on the road.

 

Coming home from Nottingham tonight and the gearbox starts crunching into third, woe is me!

 

I can only get it to go in smoothly if the revs drop right down or the gal is stationary.

 

Is it the synchro? Is there a fix?

[markchambers]

Spent all day yesterday sorting my AC compressor and aux belt problem and got back on the road.

 

Coming home from Nottingham tonight and the gearbox starts crunching into third, woe is me!

 

I can only get it to go in smoothly if the revs drop right down or the gal is stationary.

 

Is it the synchro? Is there a fix?

 

Sorry to tell you this but it's a common problem with the MT75 gearbox, it will need a gearbox strip down and replace 3rd/4th gear synchro possble require 3rd gear as well

 

Sorry

[Jeff115]

 

Sorry to tell you this but it's a common problem with the MT75 gearbox, it will need a gearbox strip down and replace 3rd/4th gear synchro possble require 3rd gear as well

 

Sorry

 

That's a bit extreme and expensive :(

 

Eatontoomanygalaxys - try some MOLYslip additive in the gear oil - you may get away with it for a while at least.

Regards,

Jeff.

[Guest Eatontoomanygalaxys]

 

Sorry to tell you this but it's a common problem with the MT75 gearbox, it will need a gearbox strip down and replace 3rd/4th gear synchro possble require 3rd gear as well

 

Sorry

 

That's a bit extreme and expensive ;)

 

Eatontoomanygalaxys - try some MOLYslip additive in the gear oil - you may get away with it for a while at least.

Regards,

Jeff.

 

Thanks chaps.

 

If I do have to have the box out has any body done it without removing the engine and box together.

 

The haynes manual says you have to do it so as not to damage the pipeing etc.

[sepulchrave]

I can't see how you would get the box out, the engine is in the way!

 

Why not remove the engine?

[Guest Eatontoomanygalaxys]

I can't see how you would get the box out, the engine is in the way!

 

Why not remove the engine?

 

I say this because I remember many years ago swapping a Maestro box (FWD) and you could get away with tilting the engine slightly removing the shafts etc and out it came.

 

Can it be done ?

[markchambers]

 

Sorry to tell you this but it's a common problem with the MT75 gearbox, it will need a gearbox strip down and replace 3rd/4th gear synchro possble require 3rd gear as well

 

Sorry

 

That's a bit extreme and expensive ;)

 

Eatontoomanygalaxys - try some MOLYslip additive in the gear oil - you may get away with it for a while at least.

Regards,

Jeff.

 

Thanks chaps.

 

 

 

 

If I do have to have the box out has any body done it without removing the engine and box together.

 

The haynes manual says you have to do it so as not to damage the pipeing etc.

 

 

 

I have taken loads of gearboxes out of galaxy's and never had to remove the engine albeit on a ramp.

This is why I know the synchro on 3rd/4th gear is knackered.

 

It is not extreme at all, it is in fact the only fix to the problem, using moly slip in the gear oil won't make any difference because the damage to the synchro has already been done! (the cones inside the synchro wear which stops them gripping the synchro hub to slow down the gear when selecting 3rd & 4th gear)

 

It is a well known problem with the MT75 gearbox, this also happens on Mondeo, Focus, Transit connect, Transit as they all share the same 5 speed gearbox (depending on which engine is fitted).

 

Thanks

 

Mark

[Guest Eatontoomanygalaxys]

Thanks Mark

 

I notice that the MTX75 from the Mondeos and transits seem to be cheaper than Galaxy boxes are they exactly the same?

 

Roughly how long does it take to get the box out? Any special tools needed?

[markchambers]

Thanks Mark

 

I notice that the MTX75 from the Mondeos and transits seem to be cheaper than Galaxy boxes are they exactly the same?

 

Roughly how long does it take to get the box out? Any special tools needed?

 

 

As far as I am aware the only difference is the gear ratio's in the gearbox and possibly slight outer casing changes depending on what age gearbox you can get hold of.

I'm not sure if the actual synchro's are different for each differently ratio'd box there possible identical for each box.

 

You maybe better getting a second hand gearbox (out of a written off Gal) then swap it for yours.

 

As for removing the gearbox it depends if you have access to a vehicle lift, air tools and finally your mechanical skills.

 

With air tools and a ramp I can get the gearboxes out within a couple of hours and to refit the g/box you will take a little longer as you need to bleed the clutch fluid, fill the g/box with oil and things like that.

 

Stripping the gearbox is a lot more technical, there are special tools involved and you will also need somewhere to do it as it can be a lengthy process, due to needing to order new clips and other parts etc.

 

Its not a job I would want to take on myself at home thats for sure!

 

 

 

just a thought though:

A friend of mine needed a new gearbox for his astra not long ago and he got it changed by some company out of the back of the autotrader magazine, it cost him