Author Topic: speedo question  (Read 2628 times)

Charles 230SL

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speedo question
« on: October 22, 2019, 17:17:56 »
hello all, Palo Alto rebuilt my speedometer, tach, center cluster, and clock back in 2014,, the units have been working fine and they look great.  But I have noticed over the past couple of months that after sitting overnight or for a few hours, the speedometer needle won't move unless I tap the speedo glass with my finger tip - upon which it quickly rises to the correct speed.  Any idea what would cause the needle to bind like this? thanks,,,charles

teahead

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Re: speedo question
« Reply #1 on: October 22, 2019, 20:38:02 »
lubricate the cable.

Disconnect and shoot some cable lube down it.
1970 280SL auto, AC - aka "Edelweiss"

Paul & Dolly

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Re: speedo question
« Reply #2 on: October 22, 2019, 21:08:14 »
Hi Charles,

Sometimes the pin &  hand contact point  becomes sticky (corrosion product ?), especially if the car has not been used for a while, and the hand sticks to the pin - a tap then moves it.

It can be cleaned, but obviously requires some dismantling.

Keep well

Paul
Paul (located in Cardiff - Wales - UK)
1967 Early 250 SL (Auto) White
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Charles 230SL

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Re: speedo question
« Reply #3 on: October 23, 2019, 23:24:37 »
Hmmm, Thanks Paul, never thought about that
« Last Edit: October 23, 2019, 23:35:52 by Charles 230SL »