front axle Citroen C4 2005 2.G User Guide

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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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AXLES
SUSPENSION
STEERING
XSARA REAR AXLE
- The frontsilentblocks are aligned at an angle of 45°in relation to the vehicle's axis.
- The rearsilentblocks are in parallel with the vehicle's axis.
NOTE:There are two suppliers for the silentblocks:
- RBT, identified by a Greenor Yellowpainted dot on the side of the mounting.
- PAULSTRA, identified by a Blackpainted dot on the side of the mounting.
It is FORBIDDENto swap components of different suppliers. Operating clearance - X = 1 to 1.4 mm.
NOTE: The RH torsion bar can be identified
by 1 paint line.
The LH torsion bar can be identified by2 paint
lines.
B3DP04UDB3DP04TC
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AXLES
SUSPENSION
STEERING
XSARA TIGHTENING TORQUES: REAR AXLE
Tightening torques (m.daN).
(1)Anti-roll bar lever: 3,2 ± 0,3
(2)Anti-roll bar
(3)Transversal torsion bars
(4)Rear crossmember flanges: 8,3 ± 0,8
(5)Front silentblocks: 5,5 ± 0,5
(6) Rear silentblocks: 4,5 ± 0,4
(7)Anti-vibration clamp
(8)Damper pin: 9,6 ± 0,9
(9)Stub axle nuts
(lubricated): 18,5 ± 1
NOTE:
- The RH torsion bar is identified by 1 paint line.
- The LH torsion bar is identified by 2 paint lines.
B3DP04SP
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AXLES
SUSPENSION
STEERING
TIGHTENING TORQUES: POWER-ASSISTED STEERING
XSARA
Power-assisted steering assembly
T
ightening torques (m.daN).
High pressure tube (rubber seal pump side)Power-assisted valve and pump union: 2.5
Return pipe.
Power-assisted valve union: 2.5
(16)Upper front fixing (E3) : 2.5
(17)Upper rear fixing (E3) : 2.2
(18)Fixing (E3) : 2.2
Tightening sequence.
Tighten screws (16) and (18).
Lightly tighten screw (17), then fully tighten.
Pressure switch on the pressure circuit.
Switch opens 30to 35 bars.
Switch closes 25 bars.
Tighten to: 2 m.daN.
B3EP045D
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AXLES
SUSPENSION
STEERING
H1 = R1 – L1 H1’ = R1 – L1’
H1 = From the front suspension arm linkage bolt axis to the ground.
R1 =Radius of the front wheel when laden.
L1 =From the centre of the wheel to the front suspension arm linkage
bolt axis.
H1' =From the front jacking point to the ground.
L1' =From the front jacking point to the radius of the front wheel when
laden.H2 = R2 - L2
H2 = From the rear axle silentblock face to the ground.
R2 =Radius of the rear wheel when laden.
L2 =From the centre of the wheel to the rear axle silentblock face.
AXLE GEOMETRY
Measurements at reference height
NOTE: To make the setting of reference height easier, it is acceptable to take the measurement from the flange of the jacking point.
WARNING: The values shown should only be used as guides. In case of doubt, check the settings at reference height
Rear heightFront height
B3CP05BCB3CP058DB3DP079C
XSARA PICASSO
Conditions for checking and adjusting: Tyres inflated to correct pressures. Vehicle at reference height. Steering rack locked at mid point(see corresponding operation).
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AXLES
SUSPENSION
STEERING
AXLE GEOMETRY
(*) = Difficult road conditions.
Compress the suspension to obtain the calculated values.
NOTE: The difference in height between the two sides should be less than10 mm. Measure the radius of the rear wheel: R2.
Calculate the dimensionH2. Measure the radius of the front wheel: R1.
Calculate the dimension H1 ouH1’.
Measurements at reference height (the reference height of the vehicle is set as per the table below).
B3CP05BCB3CP05AC
XSARA PICASSO
Front axleRear axle
Front axle
Rear axle Vehicles all engine versions (except CRD (*))
H1 = R1 – L1 or H1’ = R1 – L1’
L1 = 90,5 mmL1’ = 124 mmL2 = 8,5 mm H2 = R2 + L2
B3DP079C
Value at reference height (-8/+3 mm)Value at reference height (+10/-3 mm)
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