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SeriesIII 
Bronze Level
Joined: 17 Apr 2019
Location: Good Thunder MN
Points: 36
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 Topic: D17 Diesel Tach Drive?
Posted: 01 Jan 2025 at 2:30pm |
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My Operation tach quit working. So I took the tach cable off the engine behind the fuel filters and found the drive that spins the cable to be seized and the key at the bottom of the drive had sheared the pin. I don't know much about this and I have been trying to look for replacement parts for the drive. I have not been able to get the drive completely apart so it will release the one end of the tach cable. Does anyone have any insight on this or input on the situation? Appreciate the help.
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Alvin M
Orange Level
Joined: 24 Jun 2018
Location: PA
Points: 784
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Posted: 02 Jan 2025 at 5:47am |
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Google Allis 74511668
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Leadoff
Silver Level
Joined: 14 Oct 2016
Location: Calgary
Points: 273
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Posted: 02 Jan 2025 at 10:27am |
SeriesIII
The Tach on my D17 III did not work when I purchased the tractor several years ago. The drive cable had sheared off at the connection flange to the engine drive unit. I was able to remove the remaining "stub" of the drive cable from the engine drive unit. The new cable could then enter the space and engage the engine drive
The cause of the broken cable was a seized Operation Meter. I was able to take the Operation Meter apart and clean it and got it operating properly. Here is a link referring to the topic fyi
Hope this info helps you with your repair
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1963 D17D Series III. 1965 D15 Series II. 1965 D17 Series IV. 1975 185. 1978 716H. 1979 716H. 1965 780 Harvester/1R&DC. 1957 Model 73 SC 4 Furrow Plow
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Leadoff
Silver Level
Joined: 14 Oct 2016
Location: Calgary
Points: 273
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Posted: 02 Jan 2025 at 10:32am |
SeriesIII
Here is a link to Operation Meter clean/repair fyi My repair description is about half way down fyi
Hope this helps you get going again
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1963 D17D Series III. 1965 D15 Series II. 1965 D17 Series IV. 1975 185. 1978 716H. 1979 716H. 1965 780 Harvester/1R&DC. 1957 Model 73 SC 4 Furrow Plow
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AC720Man
Orange Level
Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4978
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Posted: 02 Jan 2025 at 7:59pm |
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 02 Jan 2025 at 8:01pm |
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
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Posted: 02 Jan 2025 at 8:03pm |
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4978
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Posted: 02 Jan 2025 at 8:05pm |
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4978
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Posted: 02 Jan 2025 at 8:07pm |
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4978
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Posted: 02 Jan 2025 at 8:09pm |
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Hope the pictures help. I’m sorry they are so large. My D17 diesel drive. Drive the pin out that I am pointing to. Remove the drive shaft, once I cleaned it up, I used a long skinny punch to drive the tach cable out.
Edited by AC720Man - 02 Jan 2025 at 9:58pm
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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