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826 PTO got me stumped.

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Bradford

08-31-2007 19:11:58

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The PTO (dual speed) will turn when the engine is off. So it isn't froze. And it turns with the engine running. But the valve to stop it doesn't work.

I pulled the drawbar support and dropped the valve from the bottom. The little pin is in place so the stem and control valve are together.
but it just flops up and down.

Here are the problems, there isn't an adjustment nut and the top stem has the head broke off. A little below where it broke off there is a 1/16 hole that has a cotter key which is hooked to a bunge cord to activate it!! There also isn't a bumper spring under the big nut on top.

when I pull up on the stem even hard enough to squeeze the two springs under the control valve nothing the pto keeps turning with what seems like full power.

I am thinking the previous owner just ran it with the pto going all the time which isn't very safe i believe.

does this look like a rebuild? I am gonna get the missing parts and hook up a gauge next like the IT manual says.

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GD720D

09-01-2007 11:16:24

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Re: 826 PTO got me stumped. in reply to Bradford, 08-31-2007 19:11:58

Believe the pto will have to come out and repaired. You should not be able to turn this pto with the engine not running because the brakes are on. They are spring loaded. Could turn it with a pipe wrench but would turn hard. Also clutches might be warped. Don't think you could get full pressure with bungee cord on valve stem. There is also a new style valve out for the pto. the new valve will let you set the tpo at a higher pressure

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Chuck's Repair

08-31-2007 19:37:32

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Re: 826 PTO got me stumped. in reply to Bradford, 08-31-2007 19:11:58

First replace the valve and linkage as that valve has to move low enough to shut off the pressure to the clutch pack.
Second if the PTO shaft still turns you will have to disassemble the PTO and replace the three brake pistons.

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