5500 FWD PTO CLUTCH LEVER

[lynxpilot]

Was running the brush mower and I had to get off momentarily, so as usual I disengaged the PTO (every time I leave the seat. BTW, our other helicopter based just north of us picked up a guy last week that had stood on his brush mower deck while it was running. It was rusted through and he didn't know and it gave way.). When I got back on and re-engaged, the PTO clutch lever went limp. I was at idle with the tractor clutch depressed.

Further investigation revealed that the roll pin that binds the lever to the shaft it turns had sheared. It was an easy fix, but I'm trying to figure a few things out:

1. Is there a shear function associated with the roll pin that holds the PTO clutch lever on?

2. If so, why?

3. Seems to me that if it is a 'clutch lever', then there should be slippage of the clutch before there is any mechanical shear taking place. Am I wrong here?

4. Could it have just been a flaw in the roll pin that finally manifested itself?

Thanks in advance.

Dave

 

[Poboy]

I don`t know of any shear funtion for this pin . We have had a few shear so we put in a new pin and then a small pin into the hole in the first pin. This seems to solve the problem.

 

[lynxpilot]

I'm wondering if maybe the pin Mahindra uses is susceptible to corrosion and shears at the ends that have water access. Still trying to figure out why the minimal force applied to that lever would cause it to go.