[6pack] Speedometer Issue

[Jeff Fetner]

Aloha Bruce,

  Does it jump regularly or erratically?  There is a pawl that turns the
gear (cog?) that advances the odometer number wheels.  If the grease
for all that stuff dries out, the cable has to work harder against that
resistance and sort of 'winds up' a bit like a spring.  Once the pawl turns
the mileage wheel (about every third of a tenth, IIRC) and the needle
jumps as the spring unloads and the magnetic bar spins faster for a bit.

  Anyway, lack of lubrication is the usual cause one way or another. 
Reduced
clearance between the needle plate (behind the face) and the rotating 
magnetic
bar can cause contact and jump around, usually with scraping sounds.  There
are some good how-tos on the web, but yes, there are lots of small parts and
springs in there.  Opening it up for careful lubrication (like 1 drop) may 
help.

Jeff

-----Original Message----- 
From: Bruce Simms
Sent: Tuesday, October 16, 2012 5:32 AM
To: 6pack at autox.team.net
Subject: [6pack] Speedometer Issue

My speedometer dial flops around about 10 mph at 60 (55-65), but seems to do
it at most speeds.B  I installed a new and lubricated speedo cable, but that
didnbt fix it (a new cable worked for my tach, which now reads solidly).
I
read that taking the speedo apart is delicate work , and, easy to break the
dial or some other nonobtainum little part.B B B  I suppose I could continue
to live with it, as Ibve done for many years (canbt remember if it ever
worked right in my 15 years of ownership!).
B
Advice/suggestions?
B
Cheers &
Thanks,
B
Bruce Simms
73 TR6 with A type OD

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