Crunch when going into reverse

[DanEdser]

So I've noticed this for a while, but when I go into reverse, the gearbox seems to crunch. I definitely have the clutch all the way down.

But then when I take it out of reverse and put it back in, it doesn't crunch again, only seems to be the first time when driving.

What could be wrong and am I looking at a hefty bill?

 

[DanEdser]

Might be in the wrong place... If it is please can admin move it to faults problems and solutions

thanks

 

[aucky]

A crunch or just some mechanical noise?

 

[DanEdser]

a crunch

 

[Martin.]

Mine does it occasionally too.

 

[Scrooge]

Don't just stamp on the clutch and launch it in reverse, take your time with it. It won't crunch if you take your time.

 

[SC03OTT]

Stop fully, give it a second then engage reverse. Something to do with the gearbox not having a synchro (someone confirm)?

 

[Fred@BTM]

go into second gear first, then into reverse slowly

 

[DaveDreads]

Why second Fred?
I always put it in first before going into reverse, is this wrong?

 

[Fred@BTM]

^doesn't actually matter, just easier to go back then forwards rather than forwards forwards

 

[JoshOm3]

I been told its something to do when the sync still spins? God knows. Mine does this too.

Foot on clutch. Push into 3rd and then into reverse. Done it with every car tbh.

 

[Bluebeard]

I always stop, foot off clutch, foot back on clutch then reverse. Always done it like that as some cars (like the op's) don't like going from 40mph in 4th to a dead stop and then banging straight into reverse.

 

[sbridgey]

Mine sometimes won't go into reverse, I just take my foot off the clutch and put it back on again and it goes in.

 

[Reddish]

It crunches because reverse does not have synchro on it so the engine speed has to be right, go to fast trying to put it in and it will make a crunch noise. Reverse is also a straight cut gear so that also makes it harder to get in there i believe and thats why you get a whine from your gearbox when you reverse fast. hope that helped.

 

[182_Adam]

id say just put it in reverse slowly...

 

[st3ve]

I guess it just comes with age, my old box did this but my new one doesn't. It's nothing to worry about if you do what's been said it shouldn't crunch.

 

[DanEdser]

Yeah I think it was because I was launching it into reverse, when I take my time with it it doesn't crunch

Thanks for all the help guys!

<3

 

[FAST_aD13]

Change your box oil, that sorted mine on the 172... for abit.

While your there I think Millers now do some kind of gearbox reconditioning fluid or similar along those lines to stop crunching, might be worth a spin.