Rover Resources Center
Differential And Transfer Case Service On LR3 Or LR4
Watch Doug, our Land Rover Master Technician, perform the differential and transfer case service ( using
complete kit # DTCM100A ) on a 2005-2009 LR3. For non-electronic (open) differential vehicles use kit # DTCM100A and for electronic differential vehicles use kit # DTCM100B. In this video, Doug explains the difference between electronic and open (non-electronic) differentials, and will show you the drain and fill points of the front and rear differential and transfer case, and axles. This service is often forgotten and should be performed every 75,000 miles, to prevent more costly repairs.
Kit #: DTCM100A / DTCM100B Performing Differential & Transfer Case Service on LR3, 2005 - 2009, Cylinder Gasoline, North American Specifications
Hi I'm Doug, your tech support representative for Atlantic British, and in this video what we're going to do is touch base on the transfer case and differential drain and refill kit we have as part of our repair and maintenance academy program. Now what you'll be receiving is enough fluids to change the fluid in your front and rear differential and your transfer case. Now in the LR3, that came with both a open or standard differential or it came with an electronic locking differential. And you should be able to get the information off the original window sticker or you can even tell by looking underneath the vehicle. You'll see the difference with the differential has a motor, an electronic motor attached to it. You'll see some wiring. You'll see a harness going to the rear diff. If it does not have that harness you have whats called the open differential. So vehicles equipped with open differential you're going to get 3 bottles of gear oil for the differentials, you're going to get 2 bottles of transfer case fluid and new drain plugs and fill plugs with seals so that when you are done and you put the new plugs in there you'll see that they are teflon coated and sealer coated, you'll end up so you don't get any leaks out of the system. If you have the electronic, then you're going to use the second kit which will have 2 bottles of differential gear oil, 2 bottles of transfer case gear oil and 2 bottles of electronic locking rear diff fluid. And be careful you want to make sure that you've checked and you know which rear differential you have so you use the proper fluid. Now this is a maintenance that even Land Rover recommends. You should do this every 75,000 miles. This is a sheet that you can go on our website and you can copy and download for your own information. You'll see everything listed on both kits. And you'll also see the listing on it which will tell you whether it is for the open diff or for the electronic rear. So we're going to take a minute and we're going to put an LR3 up in the air and we're going to show you the location of your drain and your fill plugs. Alright, so now we're ready to change our fluid in our front and rear differentials and our transfer case. Now we've already removed the steel pan underneath the engine oil pan. It's just 10 bolts, 13 millimeter heads, all the way around. Drop the pan and we move that out of the way. And what that does is exposes the drain plug right here for the front differential. Now this will basically be between frame rails, and at the very bottom, a good size plug. And when you're done draining - and that's all you're basically going to do. You're going to take your plug out. Let it drain. Give it a little bit of time because it is relatively thick fluid. So bring it down to a point when you just get a drip every now and then. You know you've gotten as much as you can out of there. Now the fill plug is a little awkward to get at. You've got your support plate on the outside, or driver side of the differential. And then you have your 2 attaching bolts here at the bottom. Above the bolt, in the front of the 2, and just above the bracket, there's a small allen head plug that's threaded into the case, that's going to be your fill plug. Probably the best way to get up into that is if you have a suction gun and put a smaller hose on the end of that or attach a smaller hose because it's a relatively small hole. It's only maybe 9 to 10 millimeters. So that's the best way to refill it. So that will take care of the front diff. Again that's just a drain and refill. Now as we move down to the transfer case, you'll find your drain plug directly on the bottom. Again this is an allen. I think this is, I believe this is an 8 millimeter allen. Take this out, let it drain, let it get down to the last drop. Then when you're ready to refill, you put that plug back in, and then there's your fill plug right there. Now again I'm going to recommend - you have listed capacities for all these fluids. Don't assume that the bottom of that fill is going to be the proper height. Always check in your book, look at your capacities. Fill it to that amount and that amount only. Now we're going to move back to the rear axle. We're at the rear axle now. Now this is what they call an open diff. It's just a standard rear differential. If this was the electronic locking there would be an additional motor on the side. You would see a small wiring harness going to it. That's the easiest way to identify whether you have the locking or non locking rear axle. Now regardless of which one it is you still have just drain plug on the bottom. We're going to let as much fluid drain out of there as possible. And then your fill plug will be up higher. It's a smaller plug, towards the back of the differential case on the passenger side. And again, fill to the capacity recommended in the book. Don't just assume that the bottom line is going to be the proper fill height. And that's pretty much it. It's going to change over those fluids. Now it is a recommended service because over a period of time. Now the differentials and the transfer case are all vented. And because they are vented you can get condensation build up in the system. They're not sealed from humidity. So water in those systems, eventually if they should build up can absolutely damage bearings and definitely the performance of those components. Do the regular maintenance now, save yourself a lot of money in the long run. So, when you're ready to change over your differential fluid and your transfer case, you can call any of our knowledgeable salesmen, they'll be happy to help you, at 1-800-533-2210. And thanks for watching.
Applies To These Models:
LR3 / Discovery 3 | '05-'09
LR4 / Discovery 4 V8 5.0 Liter | '10-'13
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