Is slip clutch needed JD670

Slip clutch

mjncad said:

Ron:

It should already be protected with shear pins. Did the Rankin come with a manual? I like the idea of a slip clutch; but I hear they can also be a maintenance headache as they need to be adjusted properly. Hopefully other members who own slip clutch equipped implements will chime in.

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Mjncad
I bought the Rankin RM used from a local dealer and had not thought to ask for a manual. They did show me the shear pin and in fact provided a spare. I will be finding out this spring about how often they break. I had read some place that without the slip clutch the spinning head could drive the transmission and thus the tractor even with the clutch depressed. Is this a real concern? The JD670 is about 2000#

Thanks for the help

Is slip clutch needed JD670 (or overrun clutch)

Kennyd said:

The "slip clutch" will not help with that problem, an "overrun clutch" will however, two different things for two different problems. I am 99% sure you 670 has a "live" or "independent" PTO. When you push the clutch in the PTO stays engaged correct?

Read this: http://www.tractordata.com/articles/technical/pto.html

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KennyD
Thank you for the reply and link. Based on my short experience and reading the manual multiple time I feel certain I have a one stage clutch and based on the experiience with the PH auger both the PTO and transmission can be engaged/disingaged by the clutch - at the same time. The text in your link is almost exactly what I recall reading, although I do not recall any reference to the overrun clutch. Sounds like I need to make a test run in an open space with that rotary mower - low and slow - and see how the tractor responds. One more thing to think about while trying not to run over things I want to keep growing.

Thanks again.