2005 Citroen C4 steering

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AXLES
SUSPENSION
STEERING
CHECKING THE POWER STEERING ASSISTANCE PRESSURE
Checking the valve sealing.
Remove the under-engine shield.
Move aside the heat shield from the steering mechanism.
Slacken the unions (2)on the power steering ram.
Uncouple the two supply pipes (3)from the distributor valve and move them aside.
Fit on the distributor valve the two plugs [8], tighten to 0,8 m.daN.
Move the steering slowly from lock to lock, to drain the ram.
Top up the level of the power steering fluid.
Open the tap [5].
Stop the engine.
Maintain the engine speed at accelerated idle.
Hold the wheels on full lock, first on one side then on the other.
The pressure should adjust to 105 ± 5 bars.
The pressure is correct: replace the steering mechanism.
The pressure is lower than the values above: replace the distributor valve.
Couple the two supply pipes (3)on the distributor valve; tighten to 0,8 m.daN.
Retighten the unions (2)on the power steering ram; tighten to 0,8 m.daN.
Remove the union [7]on the high pressure pipe (1)and the union [6]on the power steering
electropump.
Refit:
- the high pressure pipe (1); tighten to 2 ± 0,2 m.daN.
- the screen wash reservoir, the front RH splash-shield and the front RH wheel.
B3EP16FC
B3EP16GC
C4
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Downloaded from www.Manualslib.com manuals search engine AXLES
SUSPENSION
STEERING
CHECKING THE POWER STEERING ASSISTANCE PRESSURE
Fill the power steering reservoir to the max.mark «a»on the cap (4).
Engine stopped, move the steering slowly from lock to lock, in both directions approx. ten times.
Top up the fluid to the max. mark «a»on the cap (4).
Run the engine at idle for 3 minutes, without any action on the steering wheel.
Move the steering from lock to lock, until there is no longer any tight spot.
Top up the level if it again goes down.
Bleed the circuit by moving the steering several timesin each direction.
Top up the level if it again goes down.
IMPERATIVE: Use new power steering fluid for both filling and topping-up the circuit.
B3EP16HC
374
C4
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AXLES
SUSPENSION
STEERING
XSARA AXLE GEOMETRY
Front and rear measuring points - RPO 8667 #
XSARA ALL TYPES
Front height
Rear height
H1 = Dimension between the centre of the front suspension arm
mounting and the ground.
R1 =Front wheel radius under load.
L1 =Distance between the centre of the wheel and the centre of the
front suspension arm mounting.
B3CP06ZD
H2 = Dimension between the contact face of the rear mounting and
the ground.
R2 =Rear wheel radius under load.
L2 =Distance between the centre of the wheel and the contact face of
the rear mounting on the bodyshell.
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AXLES
SUSPENSION
STEERING
Setting at reference height
Front axle Rear axle
Measure the dimension «R1». Calculate the dimension H1 = R1 - L1. Measure the dimension «R2». Calculate the dimension H2 = R2 + L2.
All types (except CRD version) CRD versionAll types (except Estates
and CRD version) Estates CRD version
90,5 mm 75,5 mm 83 mm 88 mm 103 mm
Compress the suspension to obtain the values (H1)and (H2).
NOTE:The difference in height between the two sides should be less than 10 mm.
AXLE GEOMETRY
Reference heights - RPO 8667 #
Tools [1] Gauge for measuring the radius of wheels with 4 bolts: 4300-T0
XSARA
B3CP04AD
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AXLES
SUSPENSION
STEERING
ESSENTIAL: When checking the suspensions, the vehicle should be at reference height.
XSARA
AXLE GEOMETRY
Values of the front and rear suspensions, at reference height - RPO 8667 #
Tools used.
Compress the suspension, to obtain the values at reference height.
[1]Set of two suspension compressors: 9511-T.A
[2]Set of four straps: 9511-T.B
[3] Set of four shackles: 9511T.C
A> B =Negative figure: – = TOE-OUT A < B = Positive figure: + = TOE-INNOTE
B3CP04LC
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AXLES
SUSPENSION
STEERING
AXLE GEOMETRY XSARA
Values of the front and rear suspensions, at reference height
RPO 8667 #Front axle
Saloon / Estate
Saloon or Entreprise
All engines (exceptSaloon TU3JPSaloon / Estate CRD
Tolerances Adjustable
All TU3JP engines
TU3JP/CRD)CRD (*)All engines
(except TU3JP)
Tracking±1 mm
YES- 1,5 ± 1 mm
- 0°15' ± 10' (toe-out)
Castor ± 18' 3° 2°55' 2°55'
Pivot angle ± 30' NO 10°40' 10°44' 10°22' 10°26'
Camber ± 30' 0° 0°12' 0°07'
Rear axle
Saloon / Estate CRD (*)
Tolerances AdjustableSaloon all engine types
Estate all engine types all engine types Saloon entreprise
Tracking± 1,3 mm
YES4,54 ± 1,3 mm 4,27 ± 1,3 mm 3,45 ± 1,3 mm
0° 41' ± 11' 0° 39' ± 11' 0° 31' ± 10'
Camber ± 15' NO - 0°57' - 0°58' - 0°59'
(*) CRD = Difficult road conditions.
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AXLES
SUSPENSION
STEERING
XSARA
AXLE GEOMETRY
a = Angle which defines the tracking between the front and rear axles.
Its value must not exceed12'.
Anti-roll bars
Engine versions Diameter Colour ref.
ALL TYPESSaloon 19 Blue
Estate 20 Yellow
B3CP04UC
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AXLES
SUSPENSION
STEERING
XSARA TIGHTENING TORQUES: FRONT AXLE
Tightening torques (m.daN).
(1)Damper nut: 4,5 ± 0,4
(2)Cup screw: 2,5 ± 0,3
(3)Suspension leg
(4)Anti-roll bar link rod upper ball-joint: 3,7 ± 0,3
(5)Suspension leg pivot
(hollow pivot): 4,5 ± 0,5
(5)Suspension leg pivot (pivot «H»): 5,5 ± 0,5
(6)Anti-roll bars: 3,7 ± 0,3
(7)Anti-roll bar link rod lower ball-joint
(8)Pivot lower ball-joint: 4 ± 0,4
(9) Driveshaft nut: 32,5 ± 2,5
(10)Wheel bolt: 9 ± 1
(11) Lower arm front mounting: 7,6 ± 0,7
(12)Lower arm rear mounting and anti-roll bar bearing: 6,8 ± 0,6
(13)Screw under rear mounting: 3,1 ± 0,3
(14) Ball-joint fixing on lower arm: 5 ± 0,5
Subframe to bodyshell fixing screw: 8,5 ± 0,8
B3CP040PB3CP041D
Vehicles from RPO 8667# are all
equipped as standard with ventilated
discs.
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