Hello everybody, does anyone know how to change 2000 Discovery II transfer case fluid? I only see a drain plug at the bottom of t-case cover but I can't see any fill-in plug? Should I remove sensor and fill in oil there? Photos will be greatly appreciated!! : )

 

20 - drain plug
11 - fill plug

I haven't heard of any horror stories yet on these cars, but on transmissions, transfer cases, differentials, etc, I've always been told that it is good practice to open the fill plug first, just to make sure it isn't seized or rounded off or something. That way when you drain it, you know you can fill it back up.

 

Thank you very much! We just changed out front/back differential oils and will to do t-case today!!

Land Rover factory recommend Synthetic gear oil for t-case, can I use Lucas gear oil 80W-90? I live in Las Vegas, summer is extremely HOT here!!

Thanks again for your help : )

 

Use a short 1/2" extension to get to it.The fill plug is on the rear of the transfer case hidden behind the emergency brake cable - the thing shrouded in some silver heat wrap. You can use 80/140 gear oil as well.

 

/this

just be patient. it's kind of a pain but you can get to it with a 1/2 extension.

 

^^Agreed...1st time I removed mine I chewed up the fill plug pretty good...I had to get a replacement...it was quite a bit easier for me to get to once I went out and purchased a 1/2" wobble extension.

 

This was a ROYAL PAIN in you know what where. The whole problem is - some F-ing genius at Land Rover over in England thought it would be okay to leave so little clearance between the parking brake drum and the transfer case body, where the fill plug is. Probably they thought who needs to ever change that fluid anyways, right? I don't know what the F they were thinking. Putting the correct amount of fluid in was not easy, either. I ended up destroying a wrench and also spilling probably a 1/2 quart of the fluid ($15 a quart). Used Valvoline 75w140 synthetic out of Walmart. Also, with some Lucas oil. I tend to put a little Lucas in everything, but that's just me. The overall experience was pretty terrible. Is there a special wrench that one could get for this? Special tools they were using in LR shops? What am I missing?? I have to go back and add some more fluid... (((

 

There are special wrenches available. There are some threads on this forum about it.

 

It sounds like your asking about the wrench to remove the fill plug, the correct wrench is a 1/2 drive extension or u-joint. This one enables you to use a open end wrench https://extinctmotorsports.com/land-...l-sight-glass/ It is difficult to fill. I like to use the gear oil in the flexible pouch with a short hose over the nozzle, I slip the hose in the hole, put the pouch up in the tunnel behind the case and then turn it down and squeeze the oil in to the case.

 

I did in fact ended up using an open-end wrench, which I squeezed between the T-case and the brake cable... put it on the 1/2 drive bit that I tried holding in place with my other hand, which is all beat-up now, scratched up and looks like I got into a fight. Did not have a proper u-joint type of deal, going to investigate if there is a special slim 1/2 inch wrench for this task... The truck drives better and makes less noise with the new liquid. What came out was black as night, so this job should have been done probably a couple of years ago. But I still want a CDL in this truck, not this stupid '03 version...