Transfer box front oil seal

[bombx3]

Hi ,on my defender 200 tdi i have noticed the oil seal on the front of the transfer box is leaking is it changable from the front with out box removal

Regards

Ray

[Bull Bar Cowboy]

Yes, easily fixed ................ remove front prop from T/box .................. remove flange nut ................ pull out felt washer........ pull out flange............. carefully prise out the old seal ...............tap in the new seal and then re-assemble .........

Remember to fit a new felt washer .....................

Ian

[bombx3]

Thats what i like to hear im going down the pub now yipeeeeeeeeeeeee

[Bull Bar Cowboy]

Seal is FRC7043 or FTC4939 (same part) ...............felt washer is 571468 ................. Brookwells will have these is stock.

Dont forget to jack up the front to stop the oil (EP90) from raining out when you pull the flange.............

Ian

[steve_a]

You want some RTV or silicone or something sticky sealant to put the dust seal back in place too.

A hub nut socket/box spanner is a good size to drift the seal home.

It can also be a but fiddly to get the seal to go in square unless you make a bit of room under the motor (I was doing my disco which is standard, so only has minimum ground clearance).

You will probably need to chock the wheels as the nut is on v tight and engine locking alone won't stop it turning.

If you need to replace the nut it is the same as the ones on your radius arms.

If it has been leaking badly and you have driven through a lot of water then it might be a good idea to drain the transfer box and renew the oil, I had a LOT of water after the floods in there....

[Paul64]

Seal is FRC7043 or FTC4939 (same part) ...............felt washer is 571468 ................. Brookwells will have these is stock.

Dont forget to jack up the front to stop the oil (EP90) from raining out when you pull the flange.............

Ian

Craddock's sent me a 571468 washer but it's made from metal and not felt, or am I missing something?

Cheers, Paul

[Phil Hancock]

Felt seal Pt No FRC 2464.

[Paul64]

Felt seal Pt No FRC 2464.

Thanks Phil!

[errol209]

571468 is the washer that goes on top of the felt seal ...

[Paul64]

571468 is the washer that goes on top of the felt seal ...

Thanks Errol, it all got a bit confusing as I ordered by the info above that related that number to the felt washer. Ordered the felt washer too now and hopefully will have the oil leak under control soon:) EP90 ain't cheap, so don't like seeing puddles of it on the ground

Cheers

[errol209]

The parts book is your friend*, though it's often a dead heat between looking it up yourself and asking Mr. Western

* Retroanaconda has the 110 book up there too.

[Paul64]

The parts book is your friend*, though it's often a dead heat between looking it up yourself and asking Mr. Western

* Retroanaconda has the 110 book up there too.

Now that is a result! I couldn't find the 110 book though? (update:just found it!)

I tracked down the washer using your 90 book and found relevant numbers. This is a great resource and very useful - thanks. Ralph did kindly send me the part number discs a few years back, but I couldn't view them as I think it was from an old version of windows. There was a work around but I never managed to get my head around it

Cheers

[Paul64]

Hi,

Seal, felt washer and thread lock nut all replaced but still leaking oil from transfer box. Seems worse on a long trip when everything is hot. As things cool down the oil leak slows. Any ideas?

Thanks in advance

Defender CSW 200Tdi 1994

[Ex Member]

Is the bearing OK? Not too much play? If it is OK, the flange face is probably scored too much to seal well. Easiest it to get a new flange. Make sure you are using OEM or genuine seals as well.

[Paul64]

The guy that changed it for me said the bearing was in good condition. I have just driven back to the UK which is the first big trip since the seal was changed. I had word from him tonight that I should check the breathers as if blocked could be distorting the seal? Just got to find something long and rigid enough to poke down them, or would you just blow down the pipe?

If this doesn't work then I will change the flange as you suggest. The replacement seal was Britpart not OEM.

Thanks, Paul

[Anderzander]

Ahhh.... Perhaps repeat with a good quality seal. Some good Viton ones on eBay.

If you do it yourself you can also rule out a leak through any Installation errors/problems.

[Paul64]

Thanks,

I did watch him do it and the seal seemed like a good tight fit. Do you think a breather blockage could cause this?

[Les Henson]

If the breather is blocked then it might well push oil out as the air inside heats up and expands - creating pressure. Axles commonly do this as well if the breather is blocked.

Les.

[Paul64]

If the breather is blocked then it might well push oil out as the air inside heats up and expands - creating pressure. Axles commonly do this as well if the breather is blocked.

Les.

Thanks Les,

I will go to a garden centre tomorrow and get some of that stiffish green plastic coated wire to run along the breathers, just to make sure they are clear.

[western]

probably easier to disconnect at the gearbox end & blow though from there, it'll prevent any crud from ending up in the gearbox & you can clean the banjo bolt holes too.

[Paul64]

probably easier to disconnect at the gearbox end & blow though from there, it'll prevent any crud from ending up in the gearbox & you can clean the banjo bolt holes too.

Thanks Ralph,

Is there a separate breather for the transfer box as I have just had a look and can't see one from underneath?

[Les Henson]

Yes there is. Both are more easily accessible from above.

Gearbox -

Transfer box -

Les.

[Paul64]

Thanks Les,

I will have to wait until I get back over the water as the floor bolts are totally rusted over and need cutting off. I did shoot some air down each breather and one hissed back so probably blocked.