I recently purchased a 544a loader from a state surplus auction. I had the John Deere tech over to the house to give it a quick once over. I found out that around 1500 hrs ago this loader had a complete inframe done with a new head replacement. That all he could really tell me so i have read the posts here in the forums and started getting worried about the transmission problems this loader commonly has. I took it on my own to replace the pressure gauge and i dropped the filters. I was nervous as i cut them open. i found when i spread the filter out just wet oil soaked filter element paper. I breathed a heavy sigh of relief. Now for the operating pressures when idle the pressure is right around 157 psi. when i shift to forward or reverse gear the pressure drops momentarily to around 80 psi then snaps right back. Same when i shift into high range same pressure fluctuation. Now my concern is and i am not really schooled on the normal operation of this type of transmission when i step on the brakes the pressure drops to almost zero, but if i turn the clutch cutoff lever on, the pressure does not move when i apply the brakes. So my question is, Is this normal operation? I tried to ask around here and everyone here tells me to get rid of the dinosaur and buy one with a computer. Any info on this would be most welcome.
1973 John Deere 544a transmission pressure question
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