Can Citroen C4 2005 2.G Service Manual

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BRAKESBLEEDING THE BRAKING SYSTEM XSARA
Bleeding: The brakes can be bled either:
- using brake bleeding equipment, in which case the pressure of the equipment should be set to2 bars.
- or in the conventional way.
IMPERATIVE order of bleeding
Wheels:
- Rear Right.
- Front Left.
- Rear Left.
- Front Right.
Top up using brake fluid supplied by CITROËN Replacement Parts.
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BRAKES
B3FP11XD
PARKING BRAKE ADJUSTMENT
XSARA PICASSO
Adjustment.
Remove the handbrake trim (1).
Unclip the sound-deadening (2).
Raise and support the vehicle with the rear wheels hanging
free.
Check the correct routing of the brake cables under the
vehicle.
Apply and release the handbrake 4 times
.
Set the handbrake to the 5thnotch.
Tighten the nut (3)until the rear brakes are applied.
Pull the handbrake lever vigorously 4to 5 times.
Set the handbrake to the 5thnotch.
Check that the rear brakes are applied.
With the handbrake released, check that the wheels can be
turned freely by hand.
Lower the vehicle.
Refit the sound-deadening (2)and the handbrake trim (1).
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AIR
CONDITIONING
ESSENTIAL: The compressor lubricant is extremely hygroscopic; always use FRESH oil.
Checking the compressor oil level
There are three specific cases:
- 1/Repairs to a system without leaks.
- 2/Slow leak.
- 3/Fast leak.
1/ Repairing a system without leaks.
a) - Using draining/recovery equipment not fitted with an oil decanter.
- Drain the system as slowly as possible via the LOW PRESSUREvalve, so as not to lose any oil.
- No more oil should be added when filling the system with R 134.afluid.
b) - Using draining/filling equipment fitted with an oil decanter.
- Drain the R 134.afluid from the system in accordance with the instructions in the equipment handbook.
- Measure the amount of oil recovered.
- Add the same amount of NEWoil when filling the system with R 134.afluid.
c) - Replacing a compressor.
- Remove the old compressor, drain it and measure the oil quantity.
- Drain the new compressor
(supplied full), so that the same amount of NEWoil is left in the compressor as was in the old compressor.
- No more oil should be added when filling the system with R 134.a fluid.
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)
Compressor lubricant
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CONDITIONING
434
C5HP1CKC
Changing the filtering/drying cartridge
The condenser (4)has a cylinder acting as a fluid reservoir with a filtering cartridge incorporated in it.
a:Inlet union
b:Outlet union
NOTE:The filtering cartridge cannot be swapped.
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)C4
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AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Interpretation of the measurements.
«m»:High pressure.«s»:Over-heating (SC).
«n»:High temperature.«t»:Ambient air temperature.
«p»:Under-cooling (SR).«u»:Blown air temperature.
«q»:Low pressure.«v»: Humidity.
«r»:Low temperature.«w»: Temperature T3.
Under-cooling.
The under-cooling represents the difference between the condensation temperature and the aircon
fluid temperature at the aircon condenser outlet.
The under-cooling gives the quantity of aircon fluid
(in the liquid state)in the air conditioning circuit.
Values for under-cooling (SR).
Values «p» Origins Solutions
SR < 2°CLack of aircon fluid in the aircon condenser
(should be more than 150grammes)
Add some
2°C < SR <4°CLack of aircon fluid in the aircon condenser aircon fluid
(should be around 100to 150grammes)
4°C < SR < 10°C/12°CCorrect quantity
SR > 10°C/12°CRemove some
Excess aircon fluid in the aircon condenser aircon fluid
SR > 15°C
Blown air temperature «u».
The blown air temperature should be between 2°Cand 10°C.
E5AP2FBC
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AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Interpretation of the measurements.
«m»:High pressure.«s»: Over-heating (SC).
«n»:High temperature.«t»:Ambient air temperature.
«p»:Under-cooling (SR).«u»:Blown air temperature.
«q»:Low pressure.«v»:Humidity.
«r»: Low temperature.«w»: Temperature T3.
Over-heating (SC).
The over-heating represents the difference between the aircon fluid temperature at the evaporator outlet
and the evaporation temperature.
The over-heating gives the quantity of aircon fluid (in the liquid state) in the air conditioning circuit
Values for over-heating (SC).
Values «s» Origins Solutions
2° < SC < 15°CCorrect quantity
SC > 15°CLack of aircon fluid in the cooling circuitAdd some
aircon fluid
SC < 2°CExcess aircon fluid in the cooling circuitRemove some
aircon fluid
Blown air temperature «u».
The blown air temperature should be between 2°Cand 10°C.
E5AP2FBC
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