lock Citroen C4 2005 2.G Workshop Manual

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AXLES
SUSPENSION
STEERING
AXLE GEOMETRY
Conditions for checking and adjusting
Vehicle heights at reference height
Rear height Front height
L2 L1
Tools : [1] Gauge for measuring the the wheel radius, 4 bolts: 4300-T.
Tyres inflated to correct pressures. Vehicle at reference height.
Steering rack locked at mid point
(see corresponding operation).
H1 = R1 - L1
H1 = Measurement between the measuring zone underneath the front
subframe and the ground.
R1 = Front wheel radius under load.
L1 =Distance between the wheel axis and the measuring zone underneath
the front subframe.H2 = R2 + L2
H2 = Measurement between the measuring zone underneath the rear sill
and the ground.
R2 =Rear wheel radius under load.
L2 =Distance between the wheel axis and the measuring zone underneath
the rear sill.
E1AP0F3D
C4
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AXLES
SUSPENSION
STEERING
C4TIGHTENING TORQUES: POWER-ASSISTED STEERING
Steering column
Ref. Description Tightening
1Fixed central controls steering wheel screw2,2 ± 0,2
2Steering column interface nuts
3Upper nuts
4Lower nuts
5Fixing of steering cardan on valve stem
Steering mechanism with integral ram
Ref. Description Tightening
6Union of hydraulic pipe on ram0,8 ± 0,1
7Fixing of distributor valve on steering mechanism1,5 ± 0,1
8Fixing of bracket on distributor valve2 ± 0,2
9Union of hydraulic pipe on distributor valve0,8 ± 0,1
10Steering ball-joint nut3,5 ± 0,3
11Locking nut for adjustment of steering track rods5,5 ± 0,5
12Fixing of ball-joint on steering rack7 ± 0,7
13Stud on steering mechanism0,8 ± 0,1
14Nut fixing mechanism on subframe8 ± 0,8
B3EP177D
B3EP176D
2,2 ± 0,2
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AXLES
SUSPENSION
STEERING
SPECIAL FEATURES: STEERING
Preliminary operation.
Raise and support the vehicle on a two-column lift.
Remove (on RH side):
- The clip (1).
- The clip (2).
Detach the steering rack protection gaiter.
Setting.
Move the steering to full left hand lock.
Measure the dimension X.
Move the steering to full right hand lock.
Measure the dimension Y.
Calculate the dimension: L = (Y - X) : 2.
Position the steering rack to the dimension “L”
(mid-point of the steering rack).
Refit:
- The protection gaiter.
- The clip (1)
(new)and the clip (2).
B3EP13VD
Engines: KFU - NFU - RFN - RFJ - RFK - 9HX - 9HY - 9HZ - RHR
B3EP13UC
Setting the steering rack mid-point
C4
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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 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
XSARATIGHTENING TORQUES: MANUAL STEERING
Manual steering
Tightening torques (m.daN).
(7)Pivot ball-joint nut: 4
(8)Link rod lock nut :4.5
(9) Ball-joint on steering rack: 6
(10)Fixing on cradle : 5
(11)Plunger flange screws : 1.2
B3EP042D
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AXLES
SUSPENSION
STEERING
TIGHTENING TORQUES: POWER-ASSISTED STEERING
Power steering
XSARA
Tightening torques (m.daN).
(7)Pivot ball-joint nut: 4
(8)Link rod lock nut: 4.5
(9)Ball-joint on steering rack: 6
(10)Fixing on subframe: 5
(11) Hydraulic pipe connection: 2.5
(12)Valve to housing fixing: 1.2
(13)Plunger flange screw: 1.2
(14) Screw fixing the steering ram
to the housing: 5.5
(15)Nut fixing the steering ram
to the yoke: 5.5
B3EP08RD
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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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