Bleeding hydraulics
08-23-2011 | 08:54 AM
#1
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From: Bainbridge GA
Bleeding hydraulics
I have just changed all my hydraulic lines on my trim tabs and trying to figure out how to bleed the air out
My next project is to repair/rebuild the TRS hydraulic cylinders and replace the lines. Is the plate on the bottom of the outdrive the easiest/only access to the lines?
My next project is to repair/rebuild the TRS hydraulic cylinders and replace the lines. Is the plate on the bottom of the outdrive the easiest/only access to the lines?
08-23-2011 | 03:35 PM
#3
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From: Bainbridge GA
I thought so too, but when I went to the K plane after a dozen or so cycles, I had a lot of play, I am guessing thats air in the system. I also tried bleeding at the ram but really didn't get any air out.
08-23-2011 | 03:42 PM
#4
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From: Ontario, OH
Sometimes the oil will aerate when you are cycling/bleeding them. Give it some time to settle down then try it again.
Mine didn't take but a few up/down cycles and they were good to go.
And yes the distribution block/plate at the bottom of the transom assembly is where the inner lines attach.
Mine didn't take but a few up/down cycles and they were good to go.
And yes the distribution block/plate at the bottom of the transom assembly is where the inner lines attach.
08-23-2011 | 07:44 PM
#5
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From: Wisconsin
A simple thing to do which significantly reduces the air is:
1) Tab position fully up
2) Remove the line from piston end of the cylinder (closest tot he transom) or the same connection on the inside of the boat.
3) With the hose in a suitable container, run the pump until you get solid fluid, don't let the reservoir run to low.
4) Re-connect the line and remove the opposite line.
5) Cap or place the open line in fluid so air will not be sucked into it.
6) Run the pump to push the tab fully down.
7) Run the pump in the opposite direction to fill the open line.
8) Reconnect the end cap end line.
9) Run the pump in both directions.
The main theory, fill the cylinder with solid fluid starting with the piston fully bottomed. Do not have the opposite end of the cylinder connected or it will push air through the other line back to the pump. This system works well for any hydraulic system and is much simpler in practice than it is describing it!
1) Tab position fully up
2) Remove the line from piston end of the cylinder (closest tot he transom) or the same connection on the inside of the boat.
3) With the hose in a suitable container, run the pump until you get solid fluid, don't let the reservoir run to low.
4) Re-connect the line and remove the opposite line.
5) Cap or place the open line in fluid so air will not be sucked into it.
6) Run the pump to push the tab fully down.
7) Run the pump in the opposite direction to fill the open line.
8) Reconnect the end cap end line.
9) Run the pump in both directions.
The main theory, fill the cylinder with solid fluid starting with the piston fully bottomed. Do not have the opposite end of the cylinder connected or it will push air through the other line back to the pump. This system works well for any hydraulic system and is much simpler in practice than it is describing it!
08-24-2011 | 07:03 AM
#6
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Joined: Mar 2010
Posts: 152
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From: Bainbridge GA
A simple thing to do which significantly reduces the air is:
1) Tab position fully up
2) Remove the line from piston end of the cylinder (closest tot he transom) or the same connection on the inside of the boat.
3) With the hose in a suitable container, run the pump until you get solid fluid, don't let the reservoir run to low.
4) Re-connect the line and remove the opposite line.
5) Cap or place the open line in fluid so air will not be sucked into it.
6) Run the pump to push the tab fully down.
7) Run the pump in the opposite direction to fill the open line.
8) Reconnect the end cap end line.
9) Run the pump in both directions.
The main theory, fill the cylinder with solid fluid starting with the piston fully bottomed. Do not have the opposite end of the cylinder connected or it will push air through the other line back to the pump. This system works well for any hydraulic system and is much simpler in practice than it is describing it!
1) Tab position fully up
2) Remove the line from piston end of the cylinder (closest tot he transom) or the same connection on the inside of the boat.
3) With the hose in a suitable container, run the pump until you get solid fluid, don't let the reservoir run to low.
4) Re-connect the line and remove the opposite line.
5) Cap or place the open line in fluid so air will not be sucked into it.
6) Run the pump to push the tab fully down.
7) Run the pump in the opposite direction to fill the open line.
8) Reconnect the end cap end line.
9) Run the pump in both directions.
The main theory, fill the cylinder with solid fluid starting with the piston fully bottomed. Do not have the opposite end of the cylinder connected or it will push air through the other line back to the pump. This system works well for any hydraulic system and is much simpler in practice than it is describing it!
