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Unread 09-16-2009   #1 (permalink)
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Default how do you check/bleed/add fluid to a convertible top motor?

good day everyone!
I have finally decided that keeping my car is in my best interest(mainly because my wife loves it and doesnt mind me spending $ on it) anyway-since I am keeping her(the car too, lol) i am going to have to spend the cash to have the new KEE top installed. Yesterday while lifting the naked convertible frame from the open to the closed position i noticed it was not wanting to move. I also noticed a slight leak in the hydraulic line right at the "T" fitting...my opionion was that it either has gotten air in the lines and/or leaked out too much fluid to move the cylinders. So my question is (actually 3 parts) A) how to do you add fluid to these motors B) how do you bleed the air or is it needed C) what type of oil is used
as always-thanks in advance!!
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Unread 09-17-2009   #2 (permalink)
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Well I can't remember how i added fluid to my convertible hydraulic system, especially since I removed it completely now, but I can tell you that it uses Dexron III for the hydraulic fluid. Yes believe it or not it uses automatic transmission fluid.
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Unread 09-20-2009   #3 (permalink)
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thanks-at least i have made a step in the right direction.
so you removed your convertible stuff? why did you do that? so you made yours a manual top...? interesting
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Unread 02-23-2010   #4 (permalink)
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Default adding atf for conv. top pump

look behind the rear seat u should see a black and yellow pump. On the left of the pump is a rubber plug that will come out and add ATFthrough the plug opening. I use a turkey baster to add and throw the baster away. hope this helps
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Unread 02-23-2010   #5 (permalink)
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Make sure the top pistons are in the closed position before filling. You don't want to fill the reservior with full pistons and then retract them. Can get messy.
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Unread 02-27-2011   #6 (permalink)
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Quote:
Originally Posted by 7-UP BILL View Post
Make sure the top pistons are in the closed position before filling. You don't want to fill the reservior with full pistons and then retract them. Can get messy.
You were kind to try to help but your post is entirely misleading. Most readers searching for help will assume that the closed position refers to the top being closed and latched when actually, the convertible top should be in the down position when checking fluid. Your post will have folks trying to fill the reservoir with the pistons extended (top closed) and then when lowered the system will blow a hose or all hoses.
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Unread 02-28-2011   #7 (permalink)
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Quote:
Originally Posted by Beboboy9 View Post
You were kind to try to help but your post is entirely misleading. Most readers searching for help will assume that the closed position refers to the top being closed and latched when actually, the convertible top should be in the down position when checking fluid. Your post will have folks trying to fill the reservoir with the pistons extended (top closed) and then when lowered the system will blow a hose or all hoses.
NO, I think I made it quite clear that the pistons need to be in the closed position. Closed position means closed. I made no such statement about the position of the top, you did. I don't think "most readers" will "assume" that it refers to the top being closed.
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Unread 03-03-2011   #8 (permalink)
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Can you tell by looking at the pump itself which position the pistons are in?
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Unread 03-03-2011   #9 (permalink)
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No, not by the pump. But when the pistons are closed the pump should be filled with fluid. By a piston being closed, the shaft is inside the tube. Closing the piston returns the fluid to the pump/reservior.
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Unread 06-01-2012   #10 (permalink)
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Default Better safe than sorry!

Hello,
My top for my 90GTvert is closed and won't open. I hear the relay clicking but no movement. My first step is to put ATF in my convertible top motor, but wanted to know how much should i put in? Don't want any of the lines to burst, in case i over fill. Please help! Thanks!
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Unread 06-05-2012   #11 (permalink)
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Quote:
Originally Posted by orallo63 View Post
Hello,
My top for my 90GTvert is closed and won't open. I hear the relay clicking but no movement. My first step is to put ATF in my convertible top motor, but wanted to know how much should i put in? Don't want any of the lines to burst, in case i over fill. Please help! Thanks!
Can you hear the Motor Spinning? A Click just means that power is being routed to the correct place (the motor) if the motor isn't turning I think you may have found your problem.

If you take the back seat out and you are looking at the top motor, there will be a rubber plug on the left side of the motor. Pull it see if there is fluid in there. I replaced a piston and line so I had to fill the motor and the best way I found was to use a Kitchen Turkey Baster to fill it up since it is in the worst possible spot.
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Unread 02-14-2013   #12 (permalink)
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Default correct wrong info above

For people finding this thread looking for answers please ignore the posts that say your top must be up or down when you fill the reservoir. You will not blow a hose because of the position of the top when you fill.
The procedure for filling is good just ignore the part about about the top position being critical. Fill the reservoir to the bottom edge of the hole. raise and lower the top 2-3 time then refill.
In a correctly operating system both cylinders will be full at all times whether the top is up or down or halfway. There are two hoses on each cylinder (one at the top and one at the bottom) When you lower the top the pump shifts the fluid from bottom of the cylinders to the tops of the cylinders. It pumps the fluid out through the bottom hoses and pumps the fluid into the top of the cylinders through the top hoses pushing the rod down.
If the pump just pumped the fluid out of the bottom to lower the top it would need a reservoir large enough to hold all of the fluid from both cylinders. It would also be very weak without the fluid pushing down from the top of the cylinder.
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Unread 04-22-2013   #13 (permalink)
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Question:

I am having the same problem that orallo63 is having. When I hit the opener/closer button while in the drivers seat both relays click.

I even hooked the conv top motor directly up to another working car battery. Nothing happened, no whir, nada.

Does this mean the motor is dead, or is there an auto shut-off if there isn't enough fluid or something? I'm guessing the motor is just dead...but was hoping to get away with just adding fluid.

sigh.
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