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Z1000j speedo problems

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oorwullie
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Location: Newton le Willows

Z1000j speedo problems

#1 PostAuthor: oorwullie » Tue Apr 21, 2015 7:57 pm

Hi All, as in title, I changed the front bearings and when I went for a spin to check everything was ok, the speedo was showing half speed, or there abouts. So back home, took the wheel off to make sure I hadn't missed anything, all seemed fine. Back out and it seemed to work for about 2 miles then went weird again. By the time I got home it was hardly reading anything? It's an electronic drive. Any ideas?

Cheers Wullie
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nw66
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#2 PostAuthor: nw66 » Tue Apr 21, 2015 8:34 pm

Yes change into second gear :roll:
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The older it gets the faster it was :-))
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oorwullie
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#3 PostAuthor: oorwullie » Tue Apr 21, 2015 8:40 pm

nw66 wrote:Yes change into second gear :roll:


Aye, thought I was doing something wrong? :shock:
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z1bman
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#4 PostAuthor: z1bman » Tue Apr 21, 2015 9:19 pm

is the drive coupling located properly with the one on the hub ?
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oorwullie
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#5 PostAuthor: oorwullie » Tue Apr 21, 2015 9:34 pm

z1bman wrote:is the drive coupling located properly with the one on the hub ?


Aye, that was the first thing I checked.
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Al
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#6 PostAuthor: Al » Tue Apr 21, 2015 9:42 pm

If its still clocking up miles accurately on the odometer its not a fault with the speedo drive unit.
The whole set-up is massively and unnecessarily complicated and more than a little frail.
The factory manual has a comprehensive test proceedure for the array and if you follow it you will find the fault.
The speedo head is not re-buildable and has a chip in it which fails.
The drive units on the wheel usually break the wires off just where they enter the casing stub.
The three pin plug in the h/light usually burns out.

AL
1981 J1
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oorwullie
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#7 PostAuthor: oorwullie » Tue Apr 21, 2015 10:54 pm

Thanks Al, that gives me plenty to work on! Hopefully I'll get time to have a look at it this week. I'll let you know how I get on.

Cheers Wullie
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