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PTO Jolt

C

cdunn

New User
On my 4600 with independent pto, at the time of engagement, say with rotary mower,a few seconds after lever is pulled it makes a hard jolt and immediately begins to spin. The mower makes a loud "bang" because of the jolt. Is this typical for these tractors with independent pto?
 
Yes, it is pretty typical, so much so that Ford came out with a feathering bracket for later model tractors. The gist of the bracket was to allow for a pause in mid-travel while engaging the lever. Careful hand movement of the lever can accomplish the same thing without the bracket. Slowly move the lever until you see the PTO shaft start to turn. Pause for a moment while the shaft picks up speed, and then flip it to full on.
 
I sometimes wonder about Ford not understanding feathering valves.
I never liked Ford's independant pto for the very reason you mention. That and when you get the pto spun up with a rotary mower on it you need to back it into some thick stuff when you shut it off or it will wind down slowly and quickly wear out your pto brake.
They could have used a feathering valve on their Select O Speed transmissions too instead of their "inching pedal" which hammered the tractor into gear so hard.
 
As Bern says and also idle it down before you move the lever that also helps. I have a friend with a 4600 that the has me run sometime for baling hay with and it does the same thing so slow moving of the handle an low RPMs help a lot
 
Thanks much for the replays. It's good know it's not just mine. I will certainly try the method of engagement recommended. This is a great place for information from very knowledgeable folks.
 
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