90 gear / transfer box question

I've got a 1989 "90" which has had a 300 TDi engine fitted. I believe the gear box and transfer box from the donor vehicle (a '95 110 I think) were also used.

Over the weekend I was changing the oil in both boxes. The Haynes manual says (from memory) 2.7 litres of ATF in the gear box, and 2.8 of EP90 in the transfer box.

However I couldn't get much more than 2.3l in the main gear box, but the transfer box happily gobbled up over 3l before I decided to stop.

Is it possible that the conversion to the new engine resulted in the drivetrain being fitted in a rotated position, meaning that the level plug on the gearbox is lower than it should be (hence less capacity before the fluid runs out) and the plug for the transfer box (which is on the opposite side) would therefore be higher than it should be.

The important question is, is this going to cause any harm? The main gearbox is probably 0.4l down, and the transfer box is at least 0.5l too full. Short of jacking up one side of the car to an extreme degree I can't see how I'd get more fluid in the main box.

Thanks for any advice

I overfill my gearboxes (by jacking one side up), so it would be advisable just to top them both up to what they can take, plus a little more. Its all you can do really.

Make sure you got them the right way round, another thing, but if there is an extension on your gearbox, did you drain it too? If you didn't then this could account for why you couldn't get the extra 400ml in.

See image at the link below regarding these drain plugs.

http://www.difflock.com/servicing/5speed-oilchange/pic4.jpg

discomania said:

http://www.difflock.com/servicing/5speed-oilchange/pic4.jpg

Click to expand...

Hi Discomania

Any chance of somes pics of where the filler plugs
are on a R380 Gearbox and the LT230 Transfer box

I been under my landy to-day and have a leak since
the day a bought it (September) Dont know if its
Transer or Gearbox

But need to make sure I have plenty of oil in them

(I know when it stops leaking worry)

Yeah indeed, another reason why overfilling is good, lets you go that little bit further!

Go to the difflock tech site, google it, they have a good article on gearbox oil changes.

discomania said:

Go to the difflock tech site,

Click to expand...

Thanks great site plenty of reading
Just what I needed

Aye, its a good site, full of great articles and good photographs - Haynes should take note...

Thanks for those pics, the mystery of the cavernous transfer box is solved! I was using the wrong hole to fill it

There's another plug, which looks like a fill plug, it has a copper washer even, up at the top left hand side of the box. The Haynes manual has no pictures so I just assumed this was the fill / level plug.

Looking at the amount of oil left in my bottle, I must have put nearly 4l into the transfer box, I think I'll take it for a little run before work and then change the oil again. The first lot I drained was filthy so it won't do any harm to rinse out the insides, and EP90 is cheap enough

Thanks.

Sorry Mouse I don't mean to hi-Jack your post

I looked at my LT 230 Transfer Box leak and
its leaking from a round plate 6" dia with 6
fixings round the flange looks like a inspection
or access cover leaking at the joint but the
funny thing is this cover is above the filler hole
Number 4 on the pic so I am a bit lost as usual

Reckon that'll be the PTO take off point cover, should be easy enough to cure by taking it off and putting it back on with a new gasket and a bit of gobbo.

Oil is splash fed up to the top of the transfer box and will find its way out of practically any broken seal if the oil level is correct.

I don't necessarily agree with this overfilling mallarky. If the breather is blocked the transfer box in this case can build up pressure and blow a seal if the seal is damaged or doesn't reseat then water or dirt can get into the transfer box. Ok not very likely especially on a Land Rover but It's definitely something to think about. If you have a leak then just check everything more regularly.

GRUNT said:

View attachment 1607Reckon that'll be the PTO take off point cover, should be easy enough to cure by taking it off and putting it back on with a new gasket and a bit of gobbo.

Click to expand...

Thanks Grunt I will order a gasket to-morrow
will I be able to top up from there with oil

BTW what the heck is Gobbo

I'd reckon that:

gobbo = goop = stoppit = spooge = instant gasket of some kind

Mind you - Grunty might mean something else entirely...

Yup Adzies right.....I was talking about something else completely....

Hang on wot fred is this.....

No I want, Gobbo---gasket cement, sealant wot ever. Dont blather loads on, you only want a reeeely reeely reeeeeeely thin film of it on both sides of the gasket.

Yes you could fill it up from there but you'll have to take the level/filler plug out any way so you don't over fill it.

Thanks again Grunt

I pick up the gaskets to-day from land rover
he said there's two anyway will ask him for
a print out of the transfer box drawing from
his computer maybe this will help

Transfer box face-gasket-spacer-gasket-cover.

Got the PTO cover off looks like from the Factory
it was Metal to Metal with a sealer I think thats
where the leak was coming from........

This spacer that supposed to be there looks
like its all part of the Transfer Box solid
The Gaskets I was given also have to extra
holes in but the 6 bolt holes all line up

Land rover part drg I got with the gaskets
says Defender 1987- Section RO1.075 Main Casing
Is the 1987 a older Transfer box and they changed
in and around 1994 with no spacer ?????

Anyway going back to Land Rover Marshalls to
check....................

2.3 litres in the R380 is prezackly right. I use MTF94 which LR recommended after about 1996 (as used in the Floader PG1 box). Most people here (and our workshop) use Castrol VMX which is reasonably cheap not being a synthetic.
My transfer box takes 3 litres because I have an add-on finned sump fitted to increase the capacity and cooling. I change the EP90 more often than the recommended 40k kms (25k miles) because the heat causes it to go black and nasty after about 20k... EP90 is at least quite cheap.

Make one out of a Cornflakes box.

Fixed the leak in the PTO cover on the
Transfer box only.. the spacer that I found
in the end well I am 65 lying on my back
with glasses and lead lamp but spacer was
not leaking I hope ...I used Hermetite with
the gasket both sides... I topped up the
Transfer box to the filler hole used 1/2 litre
I looked backed on the history before I had
the Landy and found it had a new gearbox and
clutch at 123k now 130k so leaked 1/2 litre
over the drive... Now need to fix a leak in the
sump cover gasket but that will happen on a
full service & MOT in April cant do that leave
it to the experts

Thanks for the help from all