Replacing R380 Gearbox - what else should i replace?

[GoldCloverLeaf]

I'm currently pulling the R380 box out of mt '01 Defender. The symptoms suggest the typical 5th gear rear support bearings have failed, but in addition to the noise in 1st,2nd,3rd and 5th, the gears are now hard to select so i'll mosty likely upgrade to the Ashcroft box with HD support bearings (i run a tuned Td5 on big tyres so will be worthwhile).

Anyway, while i'm in there, i'm going to do the lot, i don't want to pull the box out again in 6 months to do the clutch or whatever.

So far, in adidtion the gearbox, i'll replace the following:


Dual mass flywheel
Clutch/pressure plate/throw out bearing
Spigot bush ***will remember to soak in oil***
Rear main seal
Transfer case input gear (if not already cross-drilled)
Gearbox mounts
Engine mounts


Is there anything else i should replace while i'm in there??

Thanks!

[Bundalene]

Your gear should be cross drilled.

A couple of others while you are there:

Half shaft seals in the transfer box plus input and output shaft seals

New solenoid kit in the starter motor (it has to come out anyhow)

Replace the small hose out of the oil cooler (It is easier removing the R380 with the pipe connected to this out of the way.




Erich

[GoldCloverLeaf]

Good points Erich!, yes i'll add those to the list. I already did the starter solenoid a year or two ago, a lot cheaper than replacing the whole starter :)

[Psimpson7]

I think that pretty much covers it with everything Erich has added.

If you have the transfer out you could possibly look at doing the centre diff shims aswell.

You can sell me the old broken gearbox if you don't need it!? :)

[Jeff]

Does your model have the gearbox oil cooler?

Jeff

:rocket:

[dfendr]

One piece cross shaft for third Diff in transfer case from Ashcroft transmissions

[laney]

If you are changing the engine mounts mite be a good chance to bo sump seals and check oil pick up and see if it's not loose.

[GoldCloverLeaf]

You can sell me the old broken gearbox if you don't need it!? :)

Possibly! I'll see how much it costs to send back to Ashcroft on the slow boat, the core refund is around $660 so if i can ship it for $200 or so it might be worth it but that might be a bit optimistic, i'll let you know.


Does your model have the gearbox oil cooler?

Jeff

:rocket:

Yes, if you can call it that (about a metres worth of pipe), but i suppose it does help.



One piece cross shaft for third Diff in transfer case from Ashcroft transmissions

Only 45 pounds hmmm, might look into that.


If you are changing the engine mounts mite be a good chance to bo sump seals and check oil pick up and see if it's not loose.

Not a bad idea... the ol' oil pump bolt walk about trick has always been in the back of my mind.

[isuzutoo-eh]

Ashcroft ATB centre diff will be better than shims and a one piece cross shaft!

[GoldCloverLeaf]

Ok now might be a good time to go cut up my credit card!

[Bundalene]

You could always get an estimation on repairs from Award Diffs or similar as a starting point


Erich

[GoldCloverLeaf]

You could always get an estimation on repairs from Award Diffs or similar as a starting point


Erich

I did consider that, the main reason i was interested in the Ashcroft is the HD support bearing converison available. I do quite a few trips to Threbo in the winter and a lot of it is 5th gear under load and this is the main weakness in the R380... although i might give this Terry guy a call and see if they can do something similar. Other than this, the gearbox was perfectly fine, so it is rather annoying.

Also, ashcroft's pricing on clutches and flywheels is considerably less than local suppliers, so all up it works out to be a few hundred less even with shipping, and you get an upgraded box less likely to have this problem again.

[Trundle]

Very interested in how this plays out, as I am looking at either a rebuild or recon R380 in the very near future. And finding a good option in WA is not easy.
Cheers

[Leyland1980]

I did exactly this in May last year with a recon R380 and Lt230 from Ashcrofts, all went well and cheaper than available in Brisbane even without returning the old boxes.

[rangieman]

The oil pump bolt was checked in my ownership , Sump removed bolt removed re loctited and new sump gasket fitted;) Any other concerns just pm me:cool:

[GoldCloverLeaf]

Thanks rangieman! You looked after the old girl well, lots of life left in her yet, after the gearbox is done anyway :D

[rangieman]

Thanks rangieman! You looked after the old girl well, lots of life left in her yet, after the gearbox is done anyway :D

What do you mean its only on loan to you ;) look after her please:angel: