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Josh N 
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Joined: 01 Feb 2019
Location: Roaring spring
Points: 66
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 Topic: 170-175 dual pto
Posted: Yesterday at 1:00pm |
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Is it possible to take a dual speed pto housing off the rear end housing of 185 and bolt it on the back of a 170-175 ?
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DrAllis
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Joined: 12 Sep 2009
Points: 23542
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Posted: Yesterday at 4:13pm |
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Yes. But you'll not have a 540/1000 RPM PTO. You'll have a 270/540 PTO.
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Josh N
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Joined: 01 Feb 2019
Location: Roaring spring
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Posted: Yesterday at 7:56pm |
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Ok. Can you bolt a
185 transmission housing to a 170-175 torque tube? I would think the transmission input shaft would be different because of the different power directors? Now that I think about it you would have to change the gearing up in bottom of torque tube like you have to when putting a dual pto on a 190
Edited by Josh N - Yesterday at 7:58pm
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DrAllis
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Joined: 12 Sep 2009
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Posted: 15 hours 6 minutes ago at 7:53am |
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Yes. The Allis 540/1000 PTO system all started up front with the PTO being 1000 RPM and then getting reduced to 540 at the rear gear train. No way to alter that on D-19's on down. The mighty One-Ninety was their first tractor to have PTO design change which involved with two possible speeds and a hydraulic clutch. They didn't incorporate true "independent" power at that time and probably should have.
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Alvin M
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Joined: 24 Jun 2018
Location: PA
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Posted: 13 hours 26 minutes ago at 9:33am |
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AC 170-175 Shuttle Had 540-1000 pto
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DrAllis
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Posted: 12 hours 60 minutes ago at 9:59am |
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Yes, they did. And I remember them being a very odd speed, like 800 RPM on the 540 side ?? something not normal anyway.
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DrAllis
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Posted: 3 hours 60 minutes ago at 6:59pm |
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I just now got my official A-C service manual out and much to my surprise a 170 or 175 that has dual 540/1000 RPM PTO with a "shuttle clutch", does indeed have quite normal PTO speeds of 660 RPM at 2,000 engine RPM on the 540 inside and 1200 RPM on the 1,000 RPM side. I was confusing myself with D-14's and D-15's equipped with a shuttle clutch.
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wjohn
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Joined: 19 Jan 2010
Location: KS
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Posted: 2 hours 24 minutes ago at 8:35pm |
 DrAllis wrote:
I just now got my official A-C service manual out and much to my surprise a 170 or 175 that has dual 540/1000 RPM PTO with a "shuttle clutch", does indeed have quite normal PTO speeds of 660 RPM at 2,000 engine RPM on the 540 inside and 1200 RPM on the 1,000 RPM side. I was confusing myself with D-14's and D-15's equipped with a shuttle clutch. |
That is great news! I remembered reading some posts on here about the weird PTO speeds, so I hesitated on tearing into my shuttle clutch 170 yet in favor of working on another one w/o shuttle... But maybe that shuttle clutch tractor is the ticket now, especially with the loader on it. Thanks for looking that up and sharing it.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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