Firestone Wireless Air Command Compressor Installation - 2006 Freightliner Sprinter

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How to Install the Firestone Wireless Air Command Compressor on a 2006 Freightliner Sprinter


Today on this 2006 Freightliner Sprinter, well be installing the Firestone Wireless Air Command 2 Compressor, part number F2540. Were going to go ahead and begin here with our compressor. Were going to go ahead and mount the air fitting in the top piece right here that already has the check valve installed on it, so we just need to install this little push fitting for the airline tubing. Go ahead and remove the rubber plug. Notice that theres already some sealer on this fitting. Well go ahead and thread it in.

You want to make sure that at least two or three threads are engaged into this, but you dont want to over tighten it either.Now, were ready to go ahead and choose a mounting location to mount our compressor as well as our ECU box which is what It has all the different outports as well as the import for the air. Now on this particular motorhome, were actually going to be mounting both of these into a storage compartment. Lets go ahead and show you where were going to do that. Now, were going to be mounting the compressor and the ECU box somewhere here on the wall. Well have to choose what order we want these to go.

It could go here or here. Since this is an oil-less compressor, it can go in any different angle. It doesnt matter.Probably choose something more about like this for the compressor, and well mount the ECU box over on the other side. Well need to mark the four holes, two on each side that well need to drill out. Next, were going to need to go ahead and drill out our eight holes of the eight locations that we just marked.

Heres the hardware that well be using to mount the ECU box. Its machine-style screw, flat washer, and a nylon locknut. Now, well be using the shorter of the two screws that come with the kit to mount the ECU box. The four longer screws will be used to mount the compressor.Go ahead and take one of our screws here. Put it through the hole.

Ill go here on the backside, and will install a flat washer and then our locking nut. Once we have all the hardware loosely installed, go ahead and tighten them down. Now to mount the compressor, well be using the machine screws. We put a flat washer on it first, and itll go through the compressor like that. On the backside, well put another flat washer and a nylon hex nut. This time, therell be a washer on the top side and then on the backside. I will go ahead and mount these. You want to make sure that when you tighten these down that you dont go too tight as you can crush the brass insert which will cause an excessive vibration that youll feel on the vehicle.Next, were going to need to put a couple of these snap bushings into the wall here. This will allow us to pull some of wire loom through as well as run our airlines back in. The snap bushing grommet that were going to be using is part number SWC8057. Now because were going to try to limit the size hole we have to drill here on the interior wall of this, were going to go ahead and untape this loom piece here, and remove these three small sections of wire loom, and well put them back on once we get the wire pulled through the bushing. For now, were just going to untape them, and remove the three smaller wire loom sections.This red wire here is what has a built-in inline fuse already added into it. Weve already gone ahead and taken a quick measurement. We know that were going to be a little too short on our wire loom, so were going to have to add some wire in anyways. Well go ahead and snip off this inline fuse, and well be reconnecting in an extra piece of wire to lengthen this loom out. This will also allow us to be able to pull the wires through the snap grommet. Now, this yellow wire here is what well run up to the 12-volt ignition switch, so that it turns power on only when the ignition switch is on.Go ahead and pull the wire loom off of this one. The last one here is the black wire which should be run up to the negative side of the battery. Well need to peel the loom off with this one, and were going to have to add a little bit of extra wire here to this negative side as well, so we could go ahead and trim off this ring terminal for now. Now, that will just leave three wires that well need to pull through this bushing here. Well need to go ahead and choose our location, and then drill our hole. One of them will be for the wire loom, and the other one is going to be for the two airlines that will run back to the airbags.Now, weve got to have had trim back a little bit of this undercoating here in order for the snap ring to go in properly. Just simply push inward, and it will snap or click into place. I will go ahead and get this hole ready, and we can go ahead and put our other snap bushing in place. Were going to go ahead and take the end that we removed the wire loom from. Feed it through our bushing here. Next, were going to go ahead and mount this relay right here. Im going to go ahead and mount it on the wall right in here. Hold it up. Put a mark where we need to drill a hole.Now to mount this relay, well be using the remaining machine screw, flat washer, and locking nylon nut. Before we mount it, were actually going to go ahead and plug it together because its part of this wiring harness here. Its got a locking tab here on one side which will line up on this side of it. Go ahead and put it together. Im going to make sure that the locking tab is fully engaged. Go ahead and put it up in position. Put our machine screw through. Well need to go on the other side, and then put our flat washer and nylon nut on.Next, well go ahead and take the plug that lines up here with the ECU box. Well need to plug that in. The little locking tab is on the front side here as well as a little tab right there is what we need to make line up. Next, well take the wire with the spade connector on it, and make the connection here with the red wire coming off of our compressor. This black wire here needs to be grounded to the frame. Its a little too short where we got our compressor mounted, so were going to need to add some wire to this to get it to go out to the frame. Well go ahead and trim off the end with the ring terminal.Now, well be using a butt connector to add an extra piece of wire inline. Go ahead and take our wire strippers, and strip back some of the wire. Go ahead and take our extension piece of wire, and strip some back as well. Then, go ahead and take one of our butt connectors. Add it onto the wire, and then crimp it down. Im going to go ahead and connect the other end to our black wire off the compressor. Crimp this side down as well. We then go ahead and add a little electrical tape to protect our connection a little bit more. Take our black wire here, and well feed it through this other grommet right here.Well then go ahead and use a couple zip ties to help secure any excess wire. Go ahead and trim off any excess zip tie here, and were going to go ahead and use this bracket here. Its part number 18144. Were going to use that to mount the accessory air valve here which will allow you to use the air hose that comes with the kit, so you can air different things up. We will take this nut off here, off the Schrader valve end. It fits in there just fine in the slot thats already in this bracket, so when you tighten down the nut on the topside, hold it in position. Ill go ahead and show you what its going to look like.Were going to need to mark our wall for the two holes, and drill them out, and then attach the bracket to the wall here. Next, were going to go ahead and mount our bracket here to the wall. Put the screw in it that comes with the kit. Feed it through the hole, and the second one up, and then well go on the backside, and put the little locking nuts that come with it. I will go ahead and take our valve here. Put it through bracket, and go ahead and put the nut back on. Nice and secure to our bracket. Go ahead and put the cap back on it for now.This right here is the air intake filter for the compressor. Were going to need to put this little fitting right here on the backside. It just threads on. Then, were going to need to choose a location thats lower than the compressor and in a dry area. Since were in this box already, the storage container on this RV, heres a bracket that Ive come up with. Its just a piece of metal thats been bent with a couple holes in it. Go ahead and mount it down here to the wall, so that were below the compressor, then we could take our hose that comes out of here, and connects in to the topside of our compressor.Were going to go ahead and mount our bracket to the wall here. Go ahead and put a mark down here on our wall where we need to drill a hole. To mount this bracket, were just going to be using a machine-style screw with a flat washer. We just got a locking thumb nut for the backside. I will go ahead and take our filter, and push it into the bracket that we made. Next, were going to go ahead and cut or length of tubing that we need to go from the top of the compressor down to the air filter, so well go ahead and trim that off. To make things a little bit easier for pushing the tubing on, you get a cup of really hot water. You can soak the end of it in the water for a few minutes, and it will soften it up enough and allow you to push it on the fitting a little bit easier.Well go ahead and dry off our airline tubing. Now with our tubing softened up a little bit, well go ahead and push it on to the fitting here. Next, were going to go ahead and make our connection from here on the outlet on the compressor to the inlet on the ECU box. Go ahead and take a section of the tubing, and we want to make sure that we cut the end straight. Were going to do that using our tubing cutter here. Go ahead and get the length we need. Go ahead and cut our other half again making sure that we get a good straight cut.Then, well go ahead and take the one end, put it into the fitting coming out of the compressor pushing all the way in pulling back the way we know its nice and seated in the fitting. Repeat the same process over here on the end fitting. Push the tubing all the way up. Gently pull back to make sure its fully seated. Next, well need to go ahead and make a loop to go from the accessory port here over here to our port that we mounted on our bracket. Go ahead and push the one end into the accessory port. Take the other end, and put it into our fitting here.Now, this location right here is the exhaust port. You can add a line to it, and extend it away from the compressor. It will cut down on some of the exhaust noise, but it is not necessary. If you do choose to add a piece of tubing to this, you must keep it no longer than 5 feet long. Now since we have the ECU here mounted inside this storage compartment on this motorhome, I think were going to leave the section of tubing off on this particular application. Now since this vehicle already has the airbags installed, were going to need to make sure that all the air has been removed or drained out of the airbags before we remove any airlines up there.Well go ahead and come back here to the Schrader valves. Go ahead and release all the air pressure from them. I will go ahead and release the air from the other side. Now with the airbags empty, we can go ahead and begin the process of tying in our new airlines. Go ahead and put our caps back on our Schrader vales here as the customer wants to leave these intact where he could manually fill them up if need be, so were going to be using some tee connectors to tee off the airlines that are ran over to the compressor. Now, the tee fitting that were using here is the Firestone Union Tee for quarter-inch tubing, part number F3025-1.It pushes on just like the other airline fittings were using, so well go ahead and take our tubing cutter here. Were going to cut the line right in this area. Well then go ahead and add our tee fitting in. Well go ahead to the other line, do the same process where we cut and add our tee fitting in place. Next, well go ahead and route the lines one at a time. Well go ahead and connect the end of our tubing to one of these two tee fittings, and then well go ahead and route it up to where our compressor and ECU box are mounted. Im going to go ahead and start here on the driver side airbag.Now when routing your tubing, you want to make sure you stay away from any areas that have sharp edges, having moving parts, or may become hot as all of these areas could damage the tubing. Well be using a few zip ties along the way to help secure the tubing as well. Now to make sure we dont get our lines mixed up, Im going to go ahead and put a little bit of electrical tape here on the driver side while we run the passenger sideline up, and then well feed them in connecting to our compressor. Now in our particular application, we needed some extra quarter-inch airline tubing, so were going to be using the Firestone quarter-inch airline tubing, part number F0937.Now that weve got our airlines routed, well go ahead and trim off any excess zip tie to help clean up our install look. Now, well go ahead and take our driver side airline tubing here, the one with the black tape we added. Well be connecting it right here to the port thats marked LR for left rear. I will go ahead and trim our tubing to the proper length using our tubing cutter. We can go ahead and add that into the port here. Push all the way in and gently pull back to make sure that its fully seated.Well go ahead and connect the other airline tubing which is the right rear to this port marked RR. Go ahead and cut this airline tubing to length as well. Well go ahead and add that into the port. I will go ahead and take a couple zip ties to help secure our lines together, so they dont move around. Its a good idea to go ahead and take some silicone or other sealant, and seal up this hole here, so you dont get any water to come through. Were just going to use a little bit of clear silicone on our application. Now, were going to need to go ahead and a ring terminal to that black wire that we ran out that goes to the compressor. Well need to ground that to the frame of the vehicle. Well attach it to the frame of the vehicle using a self-tapping screw.Well go ahead and take our wire loom here. Were going to need to route that up towards the engine compartment. Were going to follow an existing wire loom harness. Go ahead and use some zip ties to secure it along the way. Now, well go ahead and trim off our excess zip ties. Now, were going to go ahead and have to add some wire to the end of our three wires here. In this case, were going to be adding green to the yellow. The yellow will end up going to the ignition switch. Were going to go ahead and strip a little wire back here on this green wire, and were going to add a butt connector in.Now since this will be exposed or its outside the motorhome, were going to be using a heat-shrink-style butt connector to give it a little more protection. Now if you dont have any heat-shrink-style butt connectors, just a standard butt connector will work. Just make sure that you tape it up really good with some electrical tape. Go ahead and make all of our connections first, and then well use the heat gun to seal up each of the butt connectors. Next, were going to be adding on to the black wire or the wire that will run to the negative side of the battery.Now to match wire gauges, I dont have any black wire, so were going to use this red wire here. Again, well be using heat-shrink butt connector. Were going to go ahead and extend the red wire here. In this case, were going to be using a piece of black wire. Again, well strip some wire back, and add in our butt connector. Now instead of running three individual little quarter-inch wire loom pieces again, were going to go ahead and use a half-inch piece of wire loom, and just bundle all three wires together as we route it up near the battery. Next, well go ahead and finish routing our wire up to the battery. Again as were routing the wire, well go ahead and use a few zip ties to help secure it.Im going to go ahead and use an old section of airline tubing as a pull wire to help us pull the wire up into the engine compartment. Go ahead and tape our wire to it. I will go ahead and take our pull wire, pull our wires up into position. Were going to use a zip tie to help secure it, so that it doesnt fall back down. Well go ahead and need to trim our wires down to the correct length. Go ahead and trim off our excess wire loom. For our wires here, were going to be running the red wire here will go to the negative side of the battery. Our black wire, were going to be adding back in that inline fuse that we cut out earlier. This wire here will go over to the positive side of the batter. This green wire, well be pulling into the cap of the vehicle and hooking in with the fuse box.Now our black wire, well go ahead and cut that to length. Go ahead and add a butt connect in here. Were just going to use a standard butt connector here. Then, go ahead and take the end of our inline fuse. Strip a little bit of wire back there as well. Go ahead and add that to the other side of the butt connector. Then, go ahead and add a little bit of tape to that connection. Next, were going to go ahead and cut our red wire which should be going over here to the ground. Go ahead and cut that one to length. Well go ahead and add our ring terminal in here on our ground wire.Next, well need to go ahead and loosen up the negative side on the battery here. Im just going to go ahead and notch this ring terminal, so that it slides underneath that knot. Then, we can go ahead and tighten it back down. Next, Im going to go ahead and pull the fuse out of the inline fuse for now. Well put it in once all of our connections are made. Go ahead and just pull this fuse out. Well set it aside for now. Well then go ahead and connect our inline fuse over here on the positive side of the battery. Tighten that back down. Go ahead and add a zip tie here to secure our inline fuse. Go ahead and trim off any excess.Now, were going to go ahead and take our green wire which was the yellow wire. Were going to feed it through this grommet here in the firewall into the passenger compartment where well be tying it in with the fuse box. Now, were going to need to go ahead and expose our fuse box here underneath the steering column. To do that, well turn the little tab here at the top. Well have to remove our cover. We need to find a fuse that is only hot when the ignition is on. Were going to use a fuse tap to do that. Were also going to be tying a green wire to the fuse tap.Ideally, wed go to the ignition switch, but our fuse tap is only a 10-amp, so we need to make sure that we only use a circuit that is currently running a 10-amp fuse. The radio which is this point right here, its number 15 on this particular vehicle is a 10-amp, and its only hot when the key is in the on position. Were going to go ahead and pull the 10-amp fuse out of the radio here. Were going to put our fuse tap in. Well go ahead and test it using our test light. Now with the key in the off position, you can see that we dont have any power going to it; but when we turn our key on, we do have power.Were going to go ahead and remove this fuse for thing now. Were going to need to go ahead and route our green wire, and make it come out up in here. Well go up underneath the dash here, and pull our wire up. Now, well go ahead and cut our green wire to length. Go ahead and strip back a little bit of wire. Go ahead and add our butt connector in. Were going to go ahead and cut the spade connector off this fuse tap, and well be just connecting it using the butt connector. Now, well go ahead and take a little electrical tape, and tape up our connection. Now, well go ahead and put our fuse back into place, and we can put the cover back on as well.Now that all of our connections are made, well go ahead and put our 20-amp fuse back into our inline fuse here right by the battery. Go ahead and put the cover down on it. Now, weve gone ahead and put some pressure into the system, and then were going to use some soapy solution to check all of our connections to make sure that we dont have any air leaks. Heres what the handheld controller looks like. It does have a little clip that you can clip it to your sun visor if you want to. It just slides in the back here. It also does come with a couple hook and loop pads that can be adhered to the back and then to your dash if you want. This customer wants us to use the sun visor clip instead.It comes with this mobile power cord. Its just a micro-USB. It goes into the bottom of the controller here, so you can charge it up. You just need a cigarette lighter, a 12-volt outlet to do that. Now, this controller here will not operate unless the vehicles ignition is in the on position, so lets go ahead and turn it on. Now with our ignition in the on position, well push the Select button that will turn our screen on. As you can see, we have an LR, an RR for left rear and right rear. Currently, there is 66 PSI in each of the two bags. Now in order to select different selections, you push this side arrow here. You can adjust the different bags, or you can adjust them together.This controller also has three different memory settings that you can choose. Depending on your application, maybe youre towing a trailer, or just a motorhome, or just a vehicle, you can set the different pressure settings, and not having to go through and set at each time. You just push the memory button, and it will go to that predetermined setting. After you wait 20 seconds, the screen automatically turns off too without any activity. Now, well go ahead and show how you adjust it up. Well go ahead and hit the Select button. Well go ahead and push the up arrow. Well adjust our pressure. We can go back up to about 65. Hit Select.By hitting Select, it turned the compressor on. Its raising our pressure now back up to 65 in each of the airbags. Now, were up to 65. Now, this will be our preset level in our airbags. If you want to lower it down, you simply push Select. Push the down arrow, go back down to like 55. Push Select again, and the ECU box will automatically drain enough air off to lower the pressure back down to 55 PSI. Now, were going to go ahead and set our controller in the Accessory Mode, so well go ahead and press Select now that were there. Now that thats done, well go ahead and take our cap here off our Schrader valve. Heres the hose that comes with the kit. Well go ahead and put this in onto the valve. Push it down, and then bend the tab over.On this end, we have a fitting for inflating bicycle tires, car tires, whichever you need to pump up here. Lets go ahead and show you how this operates, and well do it here on a bicycle tire. With your controller in the Accessory Mode, youll need to hold the up arrow to turn the compressor on, so it will fill up your tire or whatever youre using the airline to do. You notice that soon as you let off the up arrow, the compressor stops. Now when not using your accessory port, youll simply lift up here on the tab, and it lifts off. Well then go ahead and put our cap back on, and we can store the airline hose. That will do it for installation of the Firestone Wireless Air Command 2 Compressor on our 2006 Freightliner Sprinter. .


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