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Minneapolis Moline Tractors Discussion Forum

M602 Diesel tach drive wanted

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06-27-2018 12:37:21

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Looking for tach drive for M602 diesel PN; 10A12171 or gear that drives cable. 90 degree Stewart Warner unit of .250:1 ratio. Our drive gear is lost in the field somewhere :( Also need new tach cable as well.

Thanks and cheers from Arizona!

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07-02-2018 05:43:37

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 Re: M602 Diesel tach drive wanted in reply to vecair, 06-27-2018 12:37:21  
About $80 through Summit Racing. Search "Speedometer Adapter Stewart Warner".

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07-02-2018 07:09:26

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 Re: M602 Diesel tach drive wanted in reply to BMG1, 07-02-2018 05:43:37  
Speedometer adapters are not the same, speedo adapters are 1:1 ratio whereas tach adapter is .250:1 for the diesel. Hundreds of different ratios across the board. Speedo adapter is just turning the cable 90 degrees out the the transmission to clear the sheet metal hump usually. Man I wish it was that simple:) The M602 diesel is the only one I have found that requires a .250 to 1 ratio. They used the same tach for both the gas and diesel and just put the ratio adapter on the diesel.

Thanks for trying tho!


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07-03-2018 06:21:36

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 Re: M602 Diesel tach drive wanted in reply to vecair, 07-02-2018 07:09:26  
M5 M670 same. Used to change quite regular on diesels.

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07-01-2018 10:22:21

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 Re: M602 Diesel tach drive wanted in reply to vecair, 06-27-2018 12:37:21  
I have been looking for one for my M5 I found these but have not had the time to compare the exact specs hope this helps you.
My original drive is only missing one of the end covers I may be interested in the leftover parts of your drive to fix mine my email is open

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07-01-2018 13:29:42

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 Re: M602 Diesel tach drive wanted in reply to tjv, 07-01-2018 10:22:21  
Yes I also found the Texas company and they can make up just about anything you need. Sadly they quoted me $155.00 for the drive I need. Not going to put that kind of money in one. My Steward Warner 90 degree drive is also missing the end cover adn the gear it covered. I was quoted $110.00 for just the gear! Seems like there are plenty like that as several used tractor parts companies have the drives missing the same parts! May never get it working again.

Cheers and good luck as well!

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