F1 Hydraulic System

Alan- When you open the door, there is a signal sent to the F1 pump to turn on and pressurize the system. When you do it the first time, it takes a while for the system to come up to pressure and then tell the pump to turn off. When you do it the second time, the same signal is sent to start the pump, the system then checks the pressure and shuts the pump down very quickly. So the sequence is turn on pump, monitor pressure, turn pump off when pressure is normal. So you will get a second or two of pump actuation before the system realizes pressure is already up.

 

I'm going through the F1 system to solve a separate issue...

Keep in mind that if you notice your F1 priming time (the first time the pump runs when opening the door) get longer it may mean an issue with the system so be on the lookout. With these cars unfortunately it's 'when' rather than 'if' it happens.

 

Looking at the diagram, could component #25 and/or 32 possibly be a check valve? I'm just guessing at this point.

 

What I was thinking was that the unit 1, may have an integrated check valve with the pressure reservoir in it (tht bulb on it.. Prob filled with gas to maintain pressure like in home water systems). I was also thinking the pump may have some retrograde fluid movement out of it... Or that the system is just designed to pressurize the system by running the pump, even though it is at pressure... With excess being bled back to the reservoir. We just don't see the pressure relief valve..

 

If you ever need that fixed, send it for a rebuild, it's around $1.5K to rebuild it.

I've also found some of the $2.7K sensors that are on the actuator (there are two) also exist on other cars for about $100 each! Talk about Ferrari parts mark-up. I'd love to be in that business...

 

Tell me more about the sensors.

 

Yes very interesed......all good for the community at large.

 

Alan- No, it does not lose pressure that fast. It just takes the system a finite amount of time to determine it does not need additional pressure and shut down the pump.

 

seems normal to me, mine does that also.

 

Item #32 is the pressure switch. Item #1 is the accumulator. The pressure relief valve is built into the valve body and is not available separately, nor is it removable. They do not fail. The OP's car sounds normal in operation. Many cars are being driven around with marginal systems that cause poor selection due to small leaks or other issues that don't ever get addressed. It's why the F1 system has a bad reputation according to some. In truth a well maintained system rarely goes wrong. Typically, cars will still continue to function, even when you pull them apart and you find stuff like this:
Image Unavailable, Please Login

 

What's the name of the bad part in the picture?

 

Steve- T/O or thrust bearing. Old one had quite a bit of F1 fluid on her.

CRB360/430F1S F1 Clutch Release Bearing (360/F430) : Ricambi America

Eddie- Do you prefer the HE bearing or OE?
Image Unavailable, Please Login

 

I just replaced the thrust bearing and the f1 pump. Now the gear indicator flashes and won't pass 2nd gear with transmission light on. Did it happen to you?