Wish we had a clutch....

   / Wish we had a clutch....
  • Thread Starter
#31  
Ah, I thought that the hydraulic fluid tank was at the back of the tub and the motor was in front of it.
I hear that heated dipsticks can cause the oil to overheat around the dipstick and burn it (small surface area, not enough convection to keep it cool enough).

Aaron Z

Back in the 70's I had a heated dipstick for my car, and I agree with you on the overheating issue there, as the dipstick was only an inch or two into the oil. The PT425 (the model I have) hydraulic reservoir is probably 10" deep of oil. So it may not be as much of an issue. But I'd think IF you could get that pad to heat a large metal plate area, that would be hundreds of times the surface area of that dipstick.
 
   / Wish we had a clutch....
  • Thread Starter
#32  
Here's an overhead look at the area. The hydraulic tank is in front of the engine compartment.

CBA57A78-6478-4EA9-A25E-3DF723DA5332.jpeg

And here's a look at the back wall of that tank, looking at the tram pump as well. That's the area of the tank that's most protected for a glue-on pad heater, I'd think.

53FA115C-C99B-4A1B-A9CA-2816FE80C164.jpeg
 
   / Wish we had a clutch.... #33  
That痴 my understanding of it. Charge pump is sending fluid through the filter.
 
   / Wish we had a clutch.... #34  
I believe this heating pad is now an option from Power Trac.
 
   / Wish we had a clutch.... #35  
Since making all the pumps able to disconnect is such a pain with such small space, why not disconnect just the gears pumps? These are usually the ones that require more power to turn since they are fixed displacement pumps and are trying to move a LOT of cold oil through the system. I don't the hydrostatic pump requires more power than the gear pumps.

Disconnecting the hydraulic pumps is really common in Eastern European tractors. They disconnect the pumps via a lever near the pumps, start the engine and let it warm up, then they shutdown to engage the pumps and start again. They just use a clutch similar to a dog clutch or a transmission synchro rings.
 
   / Wish we had a clutch.... #36  
Any of these clutches would go nicely with those cute little PTs. As a bonus, you can carry a few tools in them :wink:

 
   / Wish we had a clutch....
  • Thread Starter
#37  
Since making all the pumps able to disconnect is such a pain with such small space, why not disconnect just the gears pumps? These are usually the ones that require more power to turn since they are fixed displacement pumps and are trying to move a LOT of cold oil through the system. I don't the hydrostatic pump requires more power than the gear pumps.

Disconnecting the hydraulic pumps is really common in Eastern European tractors. They disconnect the pumps via a lever near the pumps, start the engine and let it warm up, then they shutdown to engage the pumps and start again. They just use a clutch similar to a dog clutch or a transmission synchro rings.

Yes, that's exactly what we're talking about doing.
 
   / Wish we had a clutch.... #39  

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