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View Full Version : Antenna mast replacement for motorised antenna's



Fr3aKi3
21-04-2007, 09:18 PM
Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!


Aim: Replacing an antenna mast that is broken
Required: Flat head and Philips head screwdriver

Note: I did this on my Civic (ek1 sedan), it might be slightly different for other car's but it's the same concept. As this DIY can apply to various cars, the DIY begins with the antenna already removed from the car.

Step 1:Removing the aerial mast from the motor.
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/01.jpg

I forgot to take a photo of it but there is one screw which secures the mast to the motor body. The screw is where the red dot is except on the opposite side. Once the screw is undone then the mast should come off quite easily.

Step 2: Removing rubber/plastic guides.
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/02.jpg

http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/03.jpg

The first pic shows the pieces of rubber which needs to be removed, second picture is of the end of the mast which has a plastic guide that also need removing. You should also keep a note of which directions the guides are facing.

Step 3: Remove plastic tube that is inside the mast
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/04.jpg

This is simple enough as the tube is not atteched to anything, it will slide out with a bit of shaking.

Step 4: Bending tabs to remove aerial mast.
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/05.jpg

Before this can be done there is a small tube of black plastic that needs to be removed, is done by sliding it out. In the picture there are 2 tabs (difficult to see) which need to be bent back with a flat head screwdriver.

http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/06.jpg
One of the tabs that was bent.

Once they've been bent the aerial mast is now ready to be taken out, it still might be a little difficult to do but with a little force it slides out. To get the aerial out you must pull it out from the same direction as the antenna would usually extend.

Step 5: Slide new aerial mast in.
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/07.jpg

Now its time to slide in the new aerial, this is simple enough as you just slide it right in. Once this is done the plastic tube and guides need to be installed back into their places. Repeats steps 2 & 3 in reverse and you shouldn't have a problem, just keep in mind the orientation of the plastic and rubber guides.

Step 6: Onto the motor body. Remove the back plate
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/08-1.jpg

There are 2 screws which need to be removed before the backplate will come off. Once the 2 screws are removed the backplate pops off easily.

Step 7: Take out the plastic shield/guide
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/08-2.jpg

Remove the part which is highlighted by the blue circle, it isn't attached to anything but it can be a little tricky to get out. Hold the moter on it's side and the plastic ring will pop out with a bit of shaking.

http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/08-3.jpg
Once that plastic ring has been removed, the broken aerial track can be seen. This needs to be removed before the new mast can be isntalled.

Once the broken track has been taken out the plastic ring and backing plate can be reinstalled.

Optional Step: Lube...
At this stage you can lube the plastic tracks of the new aerial mast, although it isn't neccessary it also won't hurt. I used some grease as a lubricant.

Step 8: Installing the new mast.
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/10.jpg

You'll need to do this in your car as the antenna must be powered. Reconnect the power/trigger plug (not the big long black one). Turn the headunit on and activate the radio, this is done so that the motor will turn on and "unwind" the cog.

The new mast should now be put into place, as shown the above the teeth of the plastic tracks should face into the centre of motor. If the teeth are not facing the correct direction the cog will not grab onto the track and the antenna will not retract. The mast should also be fully extended.

If you're headunit comes with a remote then this is where it comes in handy, if you don't have a remote then now is the time to call for someone to give you a hand. With the track/mast inserted into place, switch the headunit to a different source or turn it off. This will disengage the antenna and it will retract.

Step 9: Securing the antenna mast.
http://i4.photobucket.com/albums/y124/Fr3aki3/Antenna%20DIY/11.jpg

The antenna should now be retracted, however there should be a just enough freeplay on it so that it can be pulled out slightly. With the mast slightly pulled you, you can now line up the indent to screw hole (as pictured). Once they have been alligned the mast pushed back into place, it can be secured secured with a screw.

Step 10: Reinstall the the antenna back into the car.
Secure the antenna onto the car and plug in all cables and tubes. On my car I have the power/trigger plug, reception cable (big black banana style plug) and a tube which diverts and water(or condensation) which get's into the antenna.

Reinstall the trim and then you're done. Now you no longer have to put up with an antenna that sticks 2metres up. :thumbsup: