[WingMan71]

imported post

Pat,

I had to replace mine on my '87 Aspencade a while back. There was only one part listed for mine, which was 44800-MG9-013.

Since there are two different ones listed for your '84 I would be tempted to buy this part from the dealer if I were you. I prefer not to buy from the dealer, but rather buy online for better prices. In this case, I would make an exception, just in case you get the wrong one of the two then the dealer would have to make it right and swap out for the other part.

The install is not hard at all. When you get inside of your old one you will likely find that the nylon ring that fits over the wheel hub and drives the input to the gear box assembly is broken in two or more pieces. The only tricky part to reassembly is to make sure that the tab on the gear box is on the correct side of the tab on the wheel hub. If not, the entire gear box assembly will spin when the wheel rotates! So, look closely at those tabs before you remove the old one and see how they are aligned, i.e. which one is in front of the other one.

Good luck.

 

[WingMan71]

imported post

Pat,

One other important thing to mention was the cause of my drive gear box breaking.

My drive gear broke because the driven shaft inside the speed sensor itself had so much road goop and rust inside it that it would hardly turn at all by hand with a screwdriver! If yours doesn’t turn easily by hand, then you are just on your way to breaking your new drive gear box at some point.

I was actually able to save my speed sensor by spraying a ton of WD-40 into the rotating shaft until it cleaned all of the goop out. (Disassemble the two halves of the speed sensor before you spray it! Only spray the side with the rotating shaft in it. Don’t get any WD-40 on the printed circuit board inside the other half!) After that, the speed sensor internal shaft spun freely, and I did not have to replace it. (Which is good, since it costs about $130.00). I also tried to work a little bit of light grease down inside the side with the rotating shaft before reassembly. This in hopes that the unit would not get plugged up and rusted again like before.

 

[WingMan71]

imported post

andy_christy wrote:

Can you tell me where the speedo cable routing wire is connected on your bike?

The lower one down by the caliper.

Andy,

The "lower one" is connected to the speed sensor module which is secured to the back of the speedometer gear box assembly (at the left-side front wheel hub) with one screw.

Bear in mind that this info is for an Aspencade which uses an electronic speed sensor, not a speedometer cable like the Interstate uses.