Greasing the Speedometer Cable Housing

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In my last post, I had the forks apart to change the oil seals. When I did that, it gave me the chance to clean out the speedometer housing.

I'm not sure if it's ever been cleaned, but it was really dirty. Filthy would be a better word. So I dismantled the housing and cleaned everything up with paint thinner.

The housing is a simple assembly. There's the outer aluminum casing and a plastic geared centre. This geared plastic piece is splined to the front axle, and it spins when the wheel spins. This plastic piece in turn spins the speedometer cable, which tells the meter how fast you're going.

There are two very thin washers that sit between the plastic centre and the aluminum casing. I guess this is to prevent wear and to prevent the plastic piece from spinning directly on the casing itself.

Today, I had some help from my lovely assistant. She starts by lubricating the inside of the speedometer cable housing. This is where the washers are going to sit, so it's important to get some grease in there. She does it by squeezing the grease in with a stick.

Another shot.

Next she lubricates the washers with waterproof grease before assembly. I used brake caliper grease for this. Apologies for the poor picture quality.

Now the other washer.

Next the centre plastic piece is lubricated. You can see the gear teeth cut into it.

Here's what it looks like fully lubricated with brake caliper grease.

And here everything is fitted into the housing, and a final dollop of grease gets squeezed into whatever space is left.

And that concludes this short post on how to lube the components in the speedometer cable housing.

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