Wierd problem with the convertible top.

I have recently had the convertible top hydraulic pump, and the two secondary cylinders rebuilt. Now I'm having a strange issue with the top opening and closing. Oil level is correct in pump and there appear to be no leaks. It's strange that the top cover closes so slowly when opening the top but moves fine when stowing. Please view the video and give any suggestions.

Video link:

 

Can you check again? it should be showing now. Let me know.

 

I have several code readers but I'm not sure they can read a Ferrari. Can you recommend a relatively inexpensive one that would work?

As for the micro switch position, would that effect the cover in the middle of its movement? It's odd that it moves smoothly and quickly when the top has stowed itself. It seems to come up fine when first deploying and slows way done to a stop when the top has raised out of the bay. maybe a misaligned microswitch that's not reading the top deployed?

 

Oh boy! I spelled Weird wrong. But there seems to be no way to edit it.

 

That sounds reasonable. I'll get that code reader and check it. I've cycled the top about 10 times. Funny it moves fine when stowing away. I think the microswitch thing is looking like a probable thing.

 

OK, I have ordered the ap200 (white and gray). In the meantime, I'm going to double check hydraulic hose connections to the pump. Although i carefully marked them and am sure I put them back in the correct order. But worth a double check.

 

Car is a 2002. I sent the pump in to have it rebuilt a few weeks ago. Also rebuilt the two secondary cylinders in the top. Refilled with fresh oil. Oil level in pump is still correct (middle of bullseye when stowed), no apparent leaks. I just rechecked all the lines and they are connected correctly.

 

Top Hydraulics

 

Here's a video of the top trying to close. To me it seems like there is not enough oil in the lines. Is it possible to have an air lock? Cycling back and forth doesn't seem to help. Is there another way to bleed the system?

 

I'm constantly checking the fluid level with this problem. it's always in the correct level. I agree, it does act and sound like it doesn't have enough fluid. I would think the fluid in the system would drain out of the hoses when I removed the lines to send the pump in, but they actually leaked very little.

 

I'm leaving on a two-week trip tomorrow so I should have that scanner here by the time I get back.

 

Mercedes ZH-M 343.0 Hydraulic fluid

 

I can pull the roof down to the wind screen, but there is strong resistance. Even then the latches don't close.

Similar to the top when coming up it sometimes gets stuck before razing to the 90-degree position. I try to manually help it at that point, but it is locked down. If I shut the car off, then I can move the top freely.

 

I sent the pump in to be rebuilt first. The motor had burned out. I sent the secondary pistons in to be rebuilt because the passenger side one was leaking, and I just thought I would have both done while I was at it. They came back labeled right and left and that's how I put them in. The only thing I can think of that I might have messed up in was the exact number of threads to screw the connecting rod to on the pistons. But I have to be within 1 thread at most.

 

Double checked the oil level again today. it is right in the middle of the bullseye with the top stowed.