2005 CITROEN C6 suspension

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AXLES
SUSPENSION
STEERING
Checking the valve sealing.
Remove the exhaust line (3).
Move aside the heat shield from the steering mechanism.
Slacken the union (6)on the power steering ram.
Remove:
- The screw (4).
- The bracket (7).
Uncouple the two supply pipes (5)from the distributor valve, and move them aside.
Fit on the distributor valve the tool [6], tighten the screw to: 0,8 ± 0,1 m.daN.
Couple two pipes at the outlets of the pipes (5).
Move the steering slowly from lock to lock, to drain the ram.
Collect the LDSfluid in a tray.
Refit the exhaust line (3).
Open the tap [3e].
Start the engine.
Hold the engine speed between 1200and 1500 rpm.
Hold the steering at full lock to the right, then at full lock to the left.
The pressure should adjust to: 115 ± 5 bars.
B1JP08WDB3EP185D
CHECKING THE STEERING ASSISTANCE PRESSURE (ES9A ENGINE)
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AXLES
SUSPENSION
STEERING
Remove:
- The exhaust line (3).
- The tool [6].
Couple the two supply pipes (5)on the distributor valve.
Refit:
- The bracket (7).
- The screw (4), tighten to 0,8 ± 0,1 m.daN.
Retighten the union (6)on the power steering ram; tighten to 1,4 ± 0,35 m.daN.
Refit the exhaust line (3).
Pinch the pipe at "a", using tool [2].
Remove:
- The assembly [3].
- The union [5]on the pipe (2).
- The union [4]on the steering assistance pump.
Couple the pipe (2), using tool [1].
Tighten the pipe (2)to 2 ± 0,2 m.daN.
Refit the bracket (1).
Bleed the hydraulic steering assistance circuit (see corresponding operation).
Top up the level of the LDS fluid (see procedure: drain-fill-bleed the suspension circuit).
B1JP08WDB3EP185D
CHECKING THE STEERING ASSISTANCE PRESSURE (ES9A ENGINE)
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AXLES
SUSPENSION
STEERING
Precautions to be taken.
Proceed with care so as to prevent any entry of polluting particles.
IMPERATIVE: Respect the safety and cleanliness requirements.
IMPERATIVE: Fill the LDS fluid reservoir with new fluid: TOTAL LDS.
Bleeding.
Check the level and top up the LDSfluid (see procedure: drain-fill-bleed the suspension circuit).
Apply a pressure of 0.5 barin the LDSfluid reservoir (using tool FACOM 920).
Start the engine.
Wait for the vehicle height to stabilise.
Move the steering in each direction, from lock to lock.
Stop the engine.
Check the level and top up the LDSfluid (see procedure: drain-fill-bleed the suspension circuit).
BLEEDING THE HYDRAULIC STEERING ASSISTANCE CIRCUIT
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Downloaded from www.Manualslib.com manuals search engine SAFETY REQUIREMENTS: ACTIVE SUSPENSION WITH VARIABLE DAMPING
All operations on the hydraulic suspension circuit must be performed in conformity with the following requirements and regulations:
Authorities competent in matters of health:
- Accident prevention.
- Environmental protection.
WARNING: Operations should be carried out by specialised personnel who have had training in the safety requirements and precautions to
be taken.
Safety requirements.
ESSENTIAL: In view of the special features of the hydraulic suspension system, observe the requirements below, before undertaking any
repair.
IMPERATIVE: Depending on the operation to be carried out, respect the requirements for supporting and securing the vehicle.
Wheels hanging Wheels not hanging
Vehicle on the ground Vehicle on 4-column lift
2-column lift or secure the Depressurisation of the circuit Checking and adjusting of Other operations
vehicle on 4 axle stands(see corresponding operation)heights (switch on ignition) (depressurisation of the
hydraulic circuit)
HYDRAULICS
195
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HYDRAULICS
SAFETY REQUIREMENTS: ACTIVE SUSPENSION WITH VARIABLE DAMPING
During the operation.
Wait for the pressure in the hydraulic circuit to fall fully before disconnecting the unions on the following components (risk of sudden sinking of the
vehicle):
- Built-in Hydro-electronic Interface (BHI).
- Front suspension cylinder.
- Rear suspension cylinder.
- Front stiffness regulator.
- Rear stiffness regulator.
- Suspension pressure sensors.
IMPERATIVE: Do not operate on the hydraulic circuit without making the pressure drop (see corresponding operation).
Engine running.
Do not operate on the hydraulic suspension circuit.
Always remain out of range of any possible projections of fluid, as these could cause serious injuries.
NOTE:In the event of contact of LDSfluid with the eyes, rinse them with copious amounts of water and seek specialist advice.
NOTE:In the event of lengthy contact of LDSfluid with the skin, wash it with soap and water.
WARNING: After the engine has stopped, wait 30 seconds before commencing any operation.
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197
SAFETY REQUIREMENTS: ACTIVE SUSPENSION WITH VARIABLE DAMPING
IMPERATIVE: Do not remain underneath the vehicle during an operation to adjust vehicle heights or during actuator (electrovalve) tests.
IMPERATIVE: Any deforming of the wheel travel sensor supports is forbidden. If there is any deformation found, replace the component.
Cleanliness requirements.
WARNING: Non-respect of the cleanliness requirements may cause a contamination of the circuit and a malfunctioning of the suspension.
Preliminary operations.
The work area must be kept clean and uncluttered.
The technician must wear clean overalls.
Components being stored during the repair must be protected from dust.
The tooling required for an operation on the suspension system should always be cleaned prior to the operation.
During the operation:
- Before operating on the suspension circuit, proceed to clean the hydraulic components and unions.
IMPERATIVE: Approved cleaner: SODIMAC degreaser.
IMPERATIVE: After a dismantling, immediately blank the hydraulic components and unions with plugs. The plugs should be used for one
operation only.
Any component that has been removed must be plugged and placed in a clean plastic bag.
IMPERATIVE: After a dismantling, any cleaning using compressed air or products is strictly prohibited
. Any LDS fluid that is collected must
not be re-used. Any topping-up must be done with new fluid.
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HYDRAULICS
SUSPENSION SPHERES: GENERAL SPECIFICATION
Each suspension sphere is identified at "a", by one number and two letters, marked in bold characters:
- The number consists of 2 digits, corresponding to the nitrogen pressure inside the suspension sphere.
- The two lettersidentify the location of the suspension sphere.
Other information marked on the suspension sphere:
- Day of the year of manufacture.
- Year of manufacture.
- Time of manufacture.
- Factory no. of the suspension sphere.
B3BP1BJD
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HYDRAULICS
SUSPENSION SPHERES: SPECIFICATION - IDENTIFICATION
Specifications.
The «slimline»accumulators are grey in colour.
NOTE: Recharging the «slimline»accumulators with nitrogen is impossible.
Volume of nitrogen: 385 ± 15 cc.
Suspension cylinder accumulators (front).
Engine version Suspension sphere marking Pressure rating (bars)
ES9A
GO 50
DT17BTED4
Suspension cylinder accumulators (rear).
Engine version Suspension sphere marking Pressure rating (bars)
ES9A
KS 40
DT17BTED4
NOTE: The dampers are integral to the suspension cylinders (AMVARcartridge). (*)
(*) AMVAR =Amortissement Variable (variable damping).
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