1988 CITROEN CX lock

TOOLS TO BE USED
3312-T.
or 6323-T.
6310-T.
Lower arm ball-joint extractor, with bosses
Lower arm ball-joint extractor, with or without bosses
Hub locking tool
Torque wrench tool (40 mdaN)
Socket, 35 mm A/F
REMOVING AND REFITTING A FRONT \ij
8531-8532

REMOVING AND REFlTTlNG A FRONT
WHEEL HUB
REMOVAL
Support the front of the vehicle on stands
Take off the road wheel.
Withdraw, Fig. I
- the pin,
- the nut lock,
- the 35 mm A/F nut.
Lock the hub with tool 6310-T.
Remove the brake disc fas stated in chapter 0, op.
MA 45 1. l/3/.
Extract the swivel lower ball-joint nut
Uncouple the swivel lower ball-joint, Fig. II, using
either puller 3312-T or puller 6323-T (be careful
not to damage the ball-joint protection rubber).
Liberate the drive-shaft.
Take out, Fig. Ill :
- the screws,
- the hub. REFITTING
Introduce the wheel hub into the swivel.
Position the screws previously fitted with lugged
contact washers, Fig. Ill. Tighten to 2.7 mdaN.
Insert the drive-shaft end into the wheel hub (grease
the seal contact face).
Couple up the lower ball-joint.
Tighten the new NYSLTOP nut to 6 mdaN. (Wipe
the ball-joint fixing and recess, do not use solvent).
Refit the brake disc (Refer to @ MA 451. l/31.
Relocate, Fig. IV :
- the nut, use tool 6310-T to hold the hub in posi-
tion, tighten to 37.5 mdaN,
- the nut lock,
- the pin.
Bleed the front brakes
(See @ MA 453.0/l).
Reassemble the road wheel.
Lower the vehicle to the ground.

SPECIFICATION AND PARTICULAR FEATURES OF
THE SOURCE AND RESERVE OF PRESSURE
Reservoir:
The reservoir is located in the left hand rear section of the engine compartment. Its breather, situated on the filler
cap, is connected to a filter-capsule placed in the LH wheelarch.
Level indicator: Fig. I
A: maximum mark
B: minimum mark.
Key to reservoir diagram: Fig. I and II
1 - Overflow return from front and rear suspension cylinders.
2 - Overflow return from security valve and front rear height correctors
3 - Reservoir breather with filter in wheelarch.
4 - Hydraulic control block return pipe (ABS).
5 - Operational and overflow return pipes from compensator-brake control valve.
6 - Operational return pipe from pressure regulator and front and rear height correctors.
7 - Suction line for HP pump.
8 - Baffle deflector.
9 - Filter for overflow and operational return pipes.
10 - Fluid level indicator float.
11 - Filter on HP pump suction line.

RECOMMENDED TOOLS
3312-T
or 6323-T
Lower arm ball-joint extractor with bosses
Lower arm ball-joint extractor with or without bosses 6310-T
Hub locking tool 6320-T
Anti-roll bar link rod extractor 6602-T
Set of three stands
-- Torque wrench (40 mdaN)
- Socket 35 mm A/F \/,
8531

REMOVING AND REFITTING
THE DRIVE SHAFT ASSEMBLIES
Support the front of the vehicle on stands 6602-T.
Release the pressure in the hydraulic system.
Set the height control to the “low” position.
Remove: Fig. I:
- the road wheel,
- the pin and nut lock,
- the nut (35 mm A/F). Retain the wheel hub using
tool 6310-T, Fig. I.
Fig. II,
- suspension cylinder swivel ball maintaining pin (I 1,
- anti-roll bar link-rod nut (2).
Uncouple spherical ball (3) from the anti-roll bar link-
rod by means of puller 6320-T, Fig. Ill: (Screw up
the tool nut to the ball-joint stem and fit the tool “U”
part and spindle).
Disconnect the brake pad wear warning lamp electri-
cal harness.
Take off the brake disc cooling plate securing screws. Extract the nut of the swivel lower ball pin.
Uncouple the swivel lower ball pin with extractor
3312-T or 6323-T (Avoid damaging the ball joint
protection rubber).
Removing the LH drive-shaft assembly:
Push the LH drive shaft (5) aside with a chisel (6),
bearing against the heads of the gearbox flange
screws, Fig. V.
Important : If a few hammer strokes are not enough
to push aside drive shaft (51, the circlip is probably
blocked inside the sun gear. In that case, undo
clamp (4) and remove the transmission without its
drive-shaft, (retrieve the rollerl.
Turn the steering through full lock to the left.
Leave the swivel hanging.
Liberate the LH transmission from the hub and remove
it.
Removing the RH drive-shaft assembly:
Slacken the drive-shaft bearing support nuts (71,
Fig. VI.
Swing through a half turn tie rods (81, so as to release
the bearing outer track.
Withdraw drive shaft (9) from the sun gear. (Remove
the shaft, the o’ring seal, bush, and dust seal).
Turn the steering to full right lock; leave the swivel
hanging.
Disengage the RH transmission from the wheel hub
and remove it.

REMOVING AND REFITTING THE
DRIVE SHAFT ASSEMBLIES
REFITTING
Lubricate the wheel hub seal lips.
Fitting the LH drive-shaft assembly:
install:
- a NEW circlip (21,
- O’ring seal (I).
on the shaft, Fig. I.
Turn the steering through full lock to the left.
Insert the shaft splines home in the sun gear.
Make sure that the circlip is fully entered into its
location within the sun gear by pulling the shaft.
Engage the drive-shaft into the wheel hub.
Fitting the RH drive-shaft assembly:
Turn the steering through full right lock.
Slide the shaft into bearing (3).
Install:
the dust cover (5)
- ring (41,
- o’ring seal (3).
on the drive shaft, Fig. II
Slightly grease the bearing outer ring (7) before ente-
ring it into bearing (8). Fig. Ill.
Introduce the drive-shaft into the hub.
Swivel tie rods (6) by a half turn so that they can grip
the bearing outer ring.
Tighten nuts (9) to 1 mdaN. Couple up the lower ball-joint, (Wipe the ball-joint
fixing but do not use solvent).
Tighten to 6 mdaN the (NEW NYLSTOP) nut.
Recouple link rod (IO) with the anti-roll bar. (Wipe
the ball-joint fixing, do not use solvent).
Tighten to 4.7 mdaN the NEW NYLSTOP type nut.
Refit the suspension cylinder swivel ball and pin (14).
Reconnect the electrical harness to the brake pad
wear warning lamp (I I).
Reinstall the brake disc cooling plate (I 3)
Fit the drive-shaft nut (with faces and threads
lubricatedl.
Clamp the wheel hub with tool 6310-T.
Tighten to: 37.5 mdaN.
Replace:
- nut lock (121,
- the pin,
- the road wheel
Lower the vehicle to the ground
3tc 8531

JUNCTION BOX MA 510.00/1 1
The junction box is to be found under the dashboard, to the left (right on RHD) of the steering wheel. It combi-
nes most of the electrical functions.
It is presented on page 3, as seen from above, the front of the vehicle being directed to the left.
COMPONENTS:
- 14 fuses (refer to the table)
- A relay for the electric cooling fan
: RI
- A relay for the rear window winder motor
: R2
- A relay for the front window winder motor : R3
- A relay for the heated rear screen
: R4
- A direction indicator unit : c
- A delay/timer unit for the windscreen wiper : I
- Connectors
Connectors:
- 26, all different, can be connected.
’
- They are different by the number of channels and their colour, each colour being attributed a specific casing slot
- They are grouped by columns I to V (from left to right) and stages 1 to 6 max. (from top to bottom).
All these figures are to be found either side of the conductor on the circuit diagram.
How to read the table (page 2):
Example II 1 0 M 9
B
Connector situated in the 2nd column (II), 1st stage (I).
It is a brown (MI 10 channel (0) connector
The lead (conductor) is located in the channel 9 of the connector concerned on the circuit diagram.
Function : lead supplying the clock electrically: + permanent after fuse F7.
Wires and stripes (V H) Green wire with a black stripe.
Position (66): number of the vertical line on the circuit diagram where the channel and the connector in
question are to be found.
The letter positioned below indicates the harness which connects at that place: B (box)
Special features:
The two black 2 channel connectors used, cannot be mistaken: they differ by a 9 mm clip on the one hand
and a 5 mm flat pin on the other hand.
The yellow 2 channel connector and fuse F14 are used in cold countries only.
8531-8532

2 MA LOCATION OF THE ELECTRONIC CONTROL
510.00/3
UNITS AND RELAYS (All Models)
POSITIONING OF THE ELECTRONIC CONTROL UNITS AND RELAYS
No. Description Location
54 ABS Control Unit G
57 Fuel Calculator Unit A
60 Air Conditioning Control Unit A
76 Window Winder Unit F
80 Speed Regulating Unit E 81
Heater Control Unit A
84 Water Level Unit L
87 Water Temperature Unit B
89 Door Locking Warning Unit A
90 Door Lock Control Unit A 91
Remote Control door Lock Unit C
92 Interior Lighting Timer A
93 Bulb Failure Indicator Unit (Salopn) H
93 Bulb Failure Indicator Unit (Safari) J 110
Heater Plug Control Unit
,. K 127
Side lamp Audible Warning D 141
Ignition ECU K 142
Injection ECU E 151
Water temperature Flasher unit B 658
Blower Speed Control Unit E 731
Fuel Injection electronic Relay M 733
Air Cond. Engine Fan Relay K 734
Injector relay M 735
Main Beam Relay D
739 Height Control relay B 743
Air Horn Compressor Relay K 745
Blower Motor Fast Speed Relay A 750
Fog Lamp Relay
6 756
ABS Electra-Valve Relay L 757
ABS Protection Relay L 772
Blower Fan Motor 2nd Speed Relay K 773
Engine Cooling Fan lnverter Relay K 775
Starter Motor Safety Relay (Auto G/Box) B 778
Fuel Heater/Starter Motor Relay (with diode) K
779 Fuel Heater Oil pressure Relay (with diode) K 781
Main fuel Heater Relay K RI
Engine Cooling Fan Relay B R2
Front Window Winder Relay 6 R3
Rear Window Winder Relay B R4
Heated Rear Screen Relay 6 I
Windscreen Wiper Timer Relay
B
C Direction Indicator Unit B