1755 PTO

Goatfarmer · Apr 6, 2016

While mixing feed yesterday, the 1755 engine started lugging down and would have killed had I not shut off the pto. I unhooked the mixer pto and tried again, but the tractor lugged down, so I shut it off. When I paid more attention, there was a small grinding noise when turning on the pto that wasn't there when I started mixing, and I turned it off again promptly. Fluid level was low, (not touching the dipstick), but I find that odd because we had just filled it with only 5 hours of work done before this.
Could this be a bearing going out on the pto drive? What else could be causing this?

mkuhns · Apr 7, 2016

Most likely the pto clutches are worn out. The way the pto piston and brake pistons were designed causes oil pressure to go where it isn't supposed to and actually apply the brake. When it gets to this point, the one piston over travels and lets hyd oil into the rear. If the rear oil was low to begin with, I think it is the top bearing will lock up or tear itself apart. Either way you're looking at removing the long pto shaft that goes up to the engine and the rebuilding the pto. The brake and pto piston O-rings could also be leaking too. I always pressurized them before reinstalling into the tractor to check for leaks and proper operation. Hyd press is around 200 psi going to the pto.

Goatfarmer · Apr 7, 2016

Interesting. I will give it a go. Thanks.

Goatfarmer · Apr 25, 2016

Turns out the large bearing was bad. Fused to the shaft and had to be cut off with a torch. Other than that, all good and just about ready to finish the assembly.

1755 PTO

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