Has anyone replaced the seals on a gear pump before? From memory, when they are in place they sort of look like a "W", i was just wondering if they are made that way or if they are simply an O-ring that you install into the seal groove and over time as the O-ring hardens up it looks like it was made specially.
The only reason i ask is because i wanted to pull the pump down on my 751 to ensure its all clean, i can also check for wear while in there. The charge pressure line to the pump was burnt, this turned the inside the the hose to carbon that is all through the hydrostats. Only a small amount made it to the rotating groups but its throughout the charge pressure poppets, so it needs a good clean out. I don't want to clean the hydrostats out and leave the gear pump alone and find later that there was muck in it that caused it to fail.
Photos will follow of the charge port stuffed full of burnt rubber. I will also try and take pics of the inside of the pumps when i get to the stage of cleaning and re-assembling if anyone is interested.
The only reason i ask is because i wanted to pull the pump down on my 751 to ensure its all clean, i can also check for wear while in there. The charge pressure line to the pump was burnt, this turned the inside the the hose to carbon that is all through the hydrostats. Only a small amount made it to the rotating groups but its throughout the charge pressure poppets, so it needs a good clean out. I don't want to clean the hydrostats out and leave the gear pump alone and find later that there was muck in it that caused it to fail.
Photos will follow of the charge port stuffed full of burnt rubber. I will also try and take pics of the inside of the pumps when i get to the stage of cleaning and re-assembling if anyone is interested.