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Speedo working, Odometer not working

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Hi, two years ago i followed the very useful guide on here on how to take the dash and instrument panel out to repair my non-working odometer (speedo has always been ok). I found the small red plastic cog on the odo was loose with a slight crack in it. As recommended, I superglued it back on the metal shaft.

Worked for a while but odo has stopped again (speedo still fine if a little jittery at times).

I think I'll need to do it all again but want to buy a replacement drive cog so i don't ever have this again! I think perhaps the crack in mine has progressed.
(As an aside, I did replace my front wiper motor afterwards which involved moving the speedo cable around a lot to gain access - not sure if this did some damage…?)
Anyone know where to buy a replacement cog or any other advice?

‘81 Golf GTi Mk1 TSR1600 tintop
'90s Chesil Speedster on '70 VW Beetle Chassis
‘14 Golf GTi Mk7

 

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Are you referring to the drive wheel at the cables end, which goes into the gearbox?

If so, it's #5 (171 957 821 B) on the schematic linked to below -

https://volkswagen.7zap.com/en/rdw/golf/go/1983-7/9/957-236000/#5

The drives are coloured intentionally, there's a cream coloured one too… each denotes the gearing ratio for your particular application, so stick with the one you originally had.

Before you start to take anything apart, have a good look at how it's attached first, the drive pulls off but there's a little circlip (#6) holding it that can be a pain to remove.

If you lose it, it's not that easy to replace, I believe even new speedo cables don't include them meaning you have to reuse your existing one.

If your drive is failing / cracked, be careful extracting it in case any parts fall into the bell housing.





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Hi thanks for that. Sorry i wasnt clear. I mean the other end of the system - the red cog inside the odometer.
I went to look for a pic of it and actually found a helpful post on this very forum (couldn't find it before!):

https://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=technical%2Felectrics_2%2Fodometer-gear

Volks42 don't suppose you're still 3D printing them are you? OR know where I can get one?
PXL_20211129_184813280.jpg

‘81 Golf GTi Mk1 TSR1600 tintop
'90s Chesil Speedster on '70 VW Beetle Chassis
‘14 Golf GTi Mk7

 

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Hello! Unfortunately not, my printer packed up. I think you can buy similar repro ones on eBay, not sure how much of a perfect fit they are, however!

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Look up on ebay 14 tooth vw mk1 odometer gear,  if you refer to a us web site ie:  get the correct tooth count.

Odometer Gears - Volkswagen - Mechanical Speedometer

What do Divorces, Great Coffee, and Car Electrics all have in common?

They all start with GOOD Grounds.

Where are my DIY Links?

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Thanks as ever Briano1234 for that very useful info. That link is handy but as I'm in the UK, probably a bit of a pain to order from.

Does anyone in the UK/Europe know of a supplier of a similar part?
I did look on ebay but they're about 50 inc postage - and out of stock anyway…

(I did think about buying an old speedo, taking it apart and getting the gear from that - but no guarantee it won't be an old, cracked gear too.)

‘81 Golf GTi Mk1 TSR1600 tintop
'90s Chesil Speedster on '70 VW Beetle Chassis
‘14 Golf GTi Mk7

 

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‘81 Golf GTi Mk1 TSR1600 tintop
'90s Chesil Speedster on '70 VW Beetle Chassis
‘14 Golf GTi Mk7

 
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