Rover Resources Center
Air Filter Replacement On A D90, D110 Or Range Rover Classic
Watch Doug, our Land Rover Master Technician, explain the process involved in changing the
air filter on a Defender 90 1997. It is recommended that the air filter be replaced every 30,000 miles. Part #: RTC4683 Replacing Air Filter Element On Defender 90 1997, 8-Cylinder Gasoline, North American SpecificationsHi I'm Doug, your tech support representative for Atlantic British and in this video we are going to be covering the air filter replacement for your D90 as part of our service and maintenance kits. Now, this particular kit that you would be ordering for your D90 is going to be filter element kit RTC4683. As you can see by the chart recommended every 30,000 miles. So with this kit you'll be receiving this air filter. We're going to show you how to install the air filter yourself. It's a relatively easy job, only takes a few minutes. We're going to show you how to install the air filter element into the 1997 D90. Now this is going to be the filter you receive and this is kit # RTC4683. Nothing more than a paper element, rubber seal on both sides. Again, this is recommended to be done every 30,000 miles. If you do more off-roading or dusty areas, you probably want to do it less, 15 - 20 thousand. Air filter is critical as far as engine reliability and fuel economy. So what we are going to do is set the box aside. I always recommend if you are working over the fenders, especially on a D90 with the aluminum fenders you want to drape a nice fender cover over the top. This is one of our Atlantic British foam fender covers. You're going to reach in, and you have three clips that hold this intake housing on. Now the one in the back is a little on the tight side. And you can usually clip it out. Once you get the top two out you can sometimes flip these out without having any problems. Inside, looks like we have an 11 millimeter nut. Now this is a nylon locking nut so that the filter doesn't slide out from there. The nut that retains that, you can use either a seven sixteenth or an eleven millimeter socket, depending on what you have in your tool box. We're going to run that nut off. It's going to be a little tight because it is designed to be that way, so it doesn't back off on its own. Once you feel the nut loosen up, reach in and put your hand in underneath it because you don't want it dropping out of the socket and falling down back in behind the engine. You could end up spending more time chasing a nut down than changing the filter. Set your tool down. As a recommendation, do not set any tools down on the top of the Defender fender. These aluminum fenders if you put a little bit of weight on them it will actually leave an impression in them. That's why the fender cover. That's why you never lay your tools on top of them. Reach in. Pop out the cover. Pull your heater hoses up out of the way. Don't worry about bending it a little bit you're not going to reuse it anyway. Now that's a reasonably dirty filter. Most cases you see one like this, you probably want to change it. You can see where you have enough build up on the paper where it's going to restrict air intake. Just take that - we'll discard that one. One hand back, hold your hoses. It doesn't matter which way you install it. The gasket's the same on both sides. Slide it in all the way until you feel it seat. Reinstall your cap and you should feel it - it will seat right up against that rubber gasket. Reinstall your nut. Now you don't need to make your nut super tight, you just want it good and snug. Too tight and you could end up doing some damage to the air filter. Just make sure that you're tight up against the filter so we have a good tight seal. Now the snorkel, or the intake, there's no indentations. There's no anything there that's going to make this a one shot installation. In other words it isn't indexed. We can just basically put it on, slide that in there, slip the top 2 on because they're the easiest to get at. Reach in underneath, pull the clip forward, and the snap back, and we have all 3 on there nice and tight. Now you have a good air filter on there. And as I said it is recommended every 30,000 miles you should change that filter. Again if you go off-road or you're in a dusty area, maybe once every 20,000. But it's a good idea to check it every other oil change. That's an air filter installation on a D90. This is with the 4 O engine. You can call any of our knowledgeable salesmen. They'll be happy to help you out at 1-800-533-2210.
Applies To These Models:
Range Rover Classic | '87-'95
Defender 90 | '94-'97
Defender 110 | '93
This video has been viewed: 748 times
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