1971 Challenger Convertible Top Bleeding - Hot Rod Forum : Hotrodders Bulletin Board
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Old 05-18-2009, 12:11 PM
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1971 Challenger Convertible Top Bleeding

Hey guys,

I installed new convertible pump lines on my 71 Challenger and the top is going up and down but slowly. I can see that the lines aren't completly full. Air pockets move around when it goes up or down. How do I bleed the system? Should the lines be completly full with fluid? If I crack a nut to put more fluid in it begins to leak out, more like spew out. I've only been filling it with the top down should it be up? Any suggestions you have are appreciated.

Thanks Dave

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Old 05-19-2009, 01:31 PM
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Chech the fluid in the "down" position- you are correct.

here's a run-down on "bleeding" the top system:

"While filling the cylinder the pump should only be operating about 15 seconds at a time to prevent overheating, check the fluid level at this time and refill if necessary.

"Leave the filler plug out and place a rag under the pump to catch any spillage until the unit is bled out and filled. The piston rod must be watched closely during this process to prevent damage.

"When the piston rod is extended to the proper position attach it to the top frame, you will now be raising the top frame as you are bleeding the system.

"The fluid level should be checked and refilled (if necessary) each time the top is returned to the down position. Running the top up and down 3-4 times will bleed the system and the filler plug may now be installed, assuming there are no additional problems your top will be in good working order."
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