I hope this is correct forum. Please move or merge if not. Thanks.
I'm having an issue with the tractor not moving 90% of the time.
However the PTO and loader work fine. Linkage is good and not binding. Brakes are fine.
Pickup screen and canister filter are clean/new. If I open the cap to check oil level it is fine.
With the engine running I can see shaft turning inside reservoir.
No oil is splashing in neutral, or when HST fails to operate.
If I then open the plug on top of the HST, I can see the "butterfly"?? moving back and forth
when control shaft is moved. Oil is being splashed around, clean, no air bubbles or foam.
With tractor raised if I can get the HST to engage the wheels do turn, and then oil is splashed around
inside reservoir where you check oil level. I can change forward/reverse; high and low gear, 2wd and 4wd work.
HST does make a lot of noise, but I always thought it made a fair amount of noise and seems the same.
Continuing to activate control shaft, wheels will just stop turning, oil stops splashing, but "butterfly" continues to
move back and forth. With engine off I can see pistons moving in and out with "butterfly".
I've yet to check pressure, as I haven't been able to find fittings to connect a gauge.
Suggestions?
I'm thinking charge pump. But I hope this hasn't damaged HST.
I'm having an issue with the tractor not moving 90% of the time.
However the PTO and loader work fine. Linkage is good and not binding. Brakes are fine.
Pickup screen and canister filter are clean/new. If I open the cap to check oil level it is fine.
With the engine running I can see shaft turning inside reservoir.
No oil is splashing in neutral, or when HST fails to operate.
If I then open the plug on top of the HST, I can see the "butterfly"?? moving back and forth
when control shaft is moved. Oil is being splashed around, clean, no air bubbles or foam.
With tractor raised if I can get the HST to engage the wheels do turn, and then oil is splashed around
inside reservoir where you check oil level. I can change forward/reverse; high and low gear, 2wd and 4wd work.
HST does make a lot of noise, but I always thought it made a fair amount of noise and seems the same.
Continuing to activate control shaft, wheels will just stop turning, oil stops splashing, but "butterfly" continues to
move back and forth. With engine off I can see pistons moving in and out with "butterfly".
I've yet to check pressure, as I haven't been able to find fittings to connect a gauge.
Suggestions?
I'm thinking charge pump. But I hope this hasn't damaged HST.