Which speedo cable?

Just to clear this up as most haven't read the whole post.

If you have a screw on series 2 gauge and a series 3 box you need RTC3484 with the screw end. Don't throw your old cable out until you remove the retaining ring from the gearbox end and put it on the new cable, it just went straight on. 10 minute job and I have a new speedo cable. Not tested it yet though as I'm rebuilding propshafts.

G

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Originally Posted by Sirocco

Thanks John, RTC3484 it is then. Why would the 2a cable be to short? I would like to stick with the speedo in it as it looks to be a refurb one. Or at least it's in good condition.

Strangely the cable that is in it looks quite new and is to long. I wonder if the PO had a crack at it? Maybe with a 6cyl cable. Hmmm.

G

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Check this possibility: A possible explanation for problem with a cable that looks quite new and too long. Whoever made this cable possibly used the type with left hand twist that is intended for use with the not so common speedos or tachos with the figures on the dial increasing in anti clockwise direction. If this is used in those with normal clockwise configuration - or the common clockwise cable is used for driving anti clockwise type instruments, they may work well until for some reason eg kinking or lack of lubrication, there is more than normal resistance. The correct cable simply winds itself tighter while overcoming this. However, the wrong ones unwind themselves, jam and break.

Quote:

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Originally Posted by mox

Check this possibility: A possible explanation for problem with a cable that looks quite new and too long. Whoever made this cable possibly used the type with left hand twist that is intended for use with the not so common speedos or tachos with the figures on the dial increasing in anti clockwise direction. If this is used in those with normal clockwise configuration - or the common clockwise cable is used for driving anti clockwise type instruments, they may work well until for some reason eg kinking or lack of lubrication, there is more than normal resistance. The correct cable simply winds itself tighter while overcoming this. However, the wrong ones unwind themselves, jam and break.

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Interesting Mox. I think this one broke because they had forced a 90 degree angle through the bulkhead. I will try this new one and see how I go. If it breaks again I will be back here asking questions!

Thanks.

G

Just make sure you route the cable correctly as per the original workshop manual. Its amasing where they mount the cable. I found my cable to be too long until i looked in the book and mounted it as per the manual and it fitted perfectly.

You dont need the propshafts on to test the speedo, just make sure the handbrake drum is bolted to the flange and start her up and put her in gear, you dont need 4wd, and the speedo should work without any propshafts on.

Cheers Rod

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