De-Pressurising C5 Hydraulic System Without Using A Computer

[dizzyblond]

Hi Guys...here is the problem of the week!!...OK the car is a 2007 C5 HDi BiTurbo and I have a fractured hydraulic pipe - looking at the car from the front ie. battery on right, the pipe that is connected to the left hand sphere and then runs down the bulkhead behind the left hand side of the engine in combination with 2 other hydraulic pipes making a 3 pipe combined unit (PSA part No: 5270RN)...

 

I cannot access a Citroen dealer - don't ask!! - and I need my regular mechanic to replace or repair the pipe...BUT...I need to pressure down the hydraulic system WITHOUT using the computer...

 

My question is: How do you de-pressurise the system without using the computer to open all the ports??...and then when the pipe is fixed; How do you bleed the system WITHOUT using the computer to open all the ports??...Any help most gratefully received...thanx a mill dizzy...PS any hints or tips on extracting the pipe combo gratefully received!!!  

 

[coastline taxis]

if the pipe has a leaked then the system should of already deressurised. and should be a case of simply replacing the pipe/topping the fluid up and starting the car and it will bleed itself. the car should be sitting right on the ground if it has already depress itself;

If not then jack the car up and place axle stands underneath it. get a big rag and where the pipe goes into the sphere just crack it of and yous rag to catch the fluid that comes out.

 

replace the pipe. weve found that little children or gnomes are best to get the pipes out. but if you havnt got any handy then youl just have to struggle with it.

 

when pipe is on remove the stands and top up lds tank and start the car up. sometimes you have to presurise the lds tank to get the initail purge on the fluid just put your mouth round it and blow. the car will then start to pump the fluid and once its started to lift go inside the car and give the suspension a good work out via the suspension button  up and down

 

go make a cup of tea as your finished

[paul.h]

If you have the Haynes manual it shows drain nipples at the front and back, approximately in the middle on the piping/blocks which can also be used to depressurise the suspension by letting lds out. Only need to do the end of the car that will be worked on. Provided the car is jacked up/on axle stands so the weight is taken off the wheels at that end, then not too much lds will be lost this way. First disconnect the battery so there is no chance of the suspension pump running and loosen the lds tank cap to release any air pressure.