I Wasn't Supposed to Grease my New Speedo Cable, Was I? - JeepForum.com

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post #1 of 8 Old 06-13-2011, 09:52 PM Thread Starter
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I Wasn't Supposed to Grease my New Speedo Cable, Was I?

So, replaced the speedometer cable today on my CJ7, went about 40 miles and it snapped.

Now, before I installed it I pulled the cable out of the housing and applied a thin coat of grease to it before sliding it back in and installing the thing.
I bet I wasn't supposed to do that, huh?

Just wondering, 'cause when I install my next one I'd like to make it last a but longer. They're cheap, but not THAT cheap.


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post #2 of 8 Old 06-13-2011, 10:14 PM
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When you pulled the cable out of the housing, was there any lubrication present to begin with?

It doesn't make sense to me that lubing the cable would cause a failure.

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post #3 of 8 Old 06-13-2011, 10:37 PM
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Did you make sure it was the right length? Was it one of those "Help!" section universal ones or the whole deal -housing and cable?


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post #4 of 8 Old 06-13-2011, 10:47 PM
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I used a crown unit and had the opposite problem... I now have oil coming out of the back of the speedo from the t-case?!?!?!?! t-case vent is fine and breathing, so it's not pushing it up the cable. I've just never had it happen before.

To the OP, I've lubed OLD speedo cables in the past to quiet them down. that was 8+ years and 50K ago. no problems. I wonder if your speedo is starting to sieze up causing straign on the cable?
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post #5 of 8 Old 06-14-2011, 06:33 AM
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Powdered graphite is what you should lube the cable with.
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post #6 of 8 Old 06-14-2011, 08:36 AM Thread Starter
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It's the whole cable and housing, looks identical to the old one. When I installed the new cable, I gave the little brass nubbin on the back of the speedo a spin and it was smooth as butter. When I pulled the old cable out of the t-case, there was definitely grease on the fitting where it went into the case, but eh speedo end was dry and clean. Cable was twisted up in the housing so I couldn't pull it out for inspection.
Not sure if these are related to the breakage, but:
The speedo needle does "bounce" when I'm in the 20-30 MPH range, then stabilizes at higher speeds.
And, I clocked it with my GPS, and the speedo is almost dead on up to about 35 MPH, but by the time I accelerate to 50 MPH on the GPS, the speedo needle is maybe 5MPH fast, displaying 55 MPH.

Will pick up some if that powdered graphite stuff when I get my new cable, thanks much!

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post #7 of 8 Old 06-14-2011, 08:42 AM
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My speedo does the bounce thing up in the higher speeds but not low. A new one is in the plans. Yes graphite or any "dry" lubricant is what I've always heard to use. I figured they'd be lubed from the factory.
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post #8 of 8 Old 06-14-2011, 12:13 PM
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I lubed mine with oil...it has gone 3,000 miles since replacement...I did that because the first time I made it 4 miles before the replacement snapped. I figured it was because I hadn't lubed it.

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