1976 Citroen CX light

Downloaded from www.Manualslib.com manuals search engine IV. DISTRIBUTION FLAP ( Vl) CONTROL
Flap V 1 is controlled by C 1. It is controlled pneumatically by vacuurr
The vacuum intake is at the carburettor
The flap is controlled by a pneumatic piston subjected to vacrrum via a switch When control C 1 is positioned
between the small blue square and the red square the piston,in the switch is lifted ( fiq ( A ) ) vacuum intake
is cut off’ the supply pipe to the pneumatic piston is at atmospheric pressure flap V 1 blanks off intake E 2, and
air drawn into the intake on the bonnet comes from outside With the engine runninc and control C 1 positioned
between both blue squares ( fiq. ( B ) ) the piston in the switch comes down under the action of its spring.
supply
pipe to the pneumatic piston is no lonqer under atmospheric pressure but under the action of the vacuum, and
flap V 1 via the pneumatic piston blanks off intake E 1’ the air drawn in comes from the passenqer compartment,
( recycling position ).
NOTE Identification mark for fittinq the one way valve the outer diameter is reduced on the side of the 3-way union V. FAST IDLING SPEED CONTROL
This control allows for a faster idling speed when the compressor is operatinq
A vacuum capsule incorporated in the carburettor slightly opens the first choke butterfly by means of a small rod.
The amount of opening is adjustable by means of a screw on top of the vacuum capsule.
An electromvalve fitted to the R.H side of the front subframe and supplied at the same time as the electro-maqnetic
clutch for the compressor controls the supply of vacuum to the capsule. t FRONT
Vacuum intake
Carburettor /
Vacuum capsule
Pneumatic p Towards flap V 1
Action of vacuum
I (Cl in recyclinq
position 1
vale
Vacuum switch
7 1
- Vacuum
-- - - Atmospheric pressure

Downloaded from www.Manualslib.com manuals search engine II. PRECAUTIONS TO BE TAKEN WHEN WORKING ON THE AIR-CONDITIONING SYSTEM
a) It is imperative to wear goggles
b ) Do not smoke R 12 fluid,in the presence of a flame turns into a toxic gas.
c) Never heat any section of the refrigerating system.
d) Never switch on the refrigerating system if both electric cooling fans are not connected
e ) Never check the compressor oil level without first having drained the refrigerating circuit.
f ) Never use any oil other than TOTAL (( LUNARIA 25 H, SUNISO No 5 or TEXACO CAPELLA (( E 1) grade 500
g ) Never use refrigerating fluid other than R.12.
NOTE Refrigerating fluid may- be sold under different names : FORANE (( 12 )), FLUGENE (( 12 ))! FREON ((12 ))
( the most important feature is the number (( 12 H which defines the fluid’s properties ).
IMPORTANT NOTES
A. The compressor
MUST NEVER b e switched on when the circuit has been drained of its refrigerating fluid.
during work ‘being carried out in the workshop. for example,. Indeed, in these conditions,
the compressor
would be functioning in air, and would deteriorate rapidly.
‘Consequently, in case of an exchange of compressor necessitating draining the system of its refrigerating
fluid, in a workshop not equipped with the necessary equipment for refilling ( SOGEV equipment )
IT IS
IMPERATIVE,
before driving the vehicle to another workshop equipped with the special equipment. to carry
out the following
- To leave the blanking plugs on the compressor. in order to avoid ingress of air ( the new compressor contains
refrigerating fluid ).
- To blank the intake and outlet hoses and to fix them tempororily.
- Todisconnect the supply lead to the electro-magnetic compressor clutch
( lead with white sleeve ).
NOTE : We remind you that if the circuit has been in contact with the atmosphere, it is necessary to replace
the de-watering tank, and the compressor oil.
B. Slight oil seepage is permissible at the front bearing of the air-conditioning compressor.
Compressors showing such a seepage, and being replaced OS a result, will not be accepted under warranty.
Ill. TIGHTENING TORQUES FOR THE UNIONS IN THE CIRCUIT :
( Oil the union threads with TOTAL LUNARIA 25 before fitting )
On the compressor Intake union : 5/8” 3.45 to 4.3,daNm ( 25 to 31 ft.lb )
Outlet union l/2”’ 2.9 to 3.75 daNm ( 21 to 27 ft.lb )
On the condenser Input union l/2” 4.85 to 5.5 daNm ( 35 to 39 3/4 ft.lb )
Output union : 3/ 8” 2.7 to 3.3 daNm ( 19 l/2 to 23 3/4 ft.lb )
On-de-watering tank : Unions : 3/8” 2.1 to 2.5daNm ( 15 l/4 to 18 ft.lb )
On : Input union evaporator : 3/8” 2.1 to 2.5 daNm ( 15 l/4 to 18 ft.lb )
Output union 5/8” 3.45 to 4.3 daNm ( 25 to 31 ft.lb )

Downloaded from www.Manualslib.com manuals search engine 2 OPERATION No MA. 840-O : A//ii,rs/hq /I><. body-sbcll rom/mncnts
Section A Section C
Section 8
4-k
J4
Clearance b&men side panels :
- Clearance between panels
Jl = J2 = J3 = 6 + 3 mm
Difference in level between edges of panels 2 mm max.
- Clearance between window frames of the front and rear doors J4 = 10 + 2 mm
Difference in level ( between window frames ) .,., 2 EN? max.
_ Clearance between side window frames and roof edge
J5 = 7 ? 2 mm
- Difference in level ( between window frames and roof ) 2 mm max
- Clearance between door and rubber seal fixings J6 = 14 + 2 mm -4
Flush-fit tolerances :
Protrusion of each component in relation to the one immediately
behind it 0 to 2 mm max
..,.................,,,II,
- Continuity of the s< light line >a Difference 2 mm max.
- Recess of side door window frames in relation to roof gutter R = .7 ’ 4 mm -2

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 841-O : Adjusting fh~ doors Op. MA. 841-O 1 I. ADJUSTING A FRONT DOOR
1. Longitudinal adiustment :
Check
the clearance of the front door with the
front wing and the rear door : J=6+_3mm
If necessary. add or withdraw the adjustment shims
( thickness 1 or 2 mm ) at <( a 1) and << b to_ a) Fitting shims at SC a u :
Remove screw (2) and loosen the 2 screws ( 1).
Slide the shims between hody and hinge.
Fit screw (2) and tighten the three fixing
nuts of upper hinge.
b) Fitting shims at <, b n :
Remove the two fixing screws (4) for distance
strop (3) and tilt it.
Loosen the two screws (5 ).
Slide the shims between body &hinge and
retighten fixing screws (5 ). 2. Transversal and height adjustments :
Loosen hinge fixing screws.
Move the door vertically in order to obtain a
clearance of : Jl = 7 +‘2mm
between the upper port of the window frame and
the roof edging.
Check ‘the continuity of the a light line 1) and
the difference in alignment between door and
front wing. Inset of front door in relation to
front wing = maximum of 2 mm.
Tighten the hinge fixing SCWNS and fix door
check (3) using screws (“4). 3. Adjustment of door striking plate engagement :
Loosen. the two door striking plate fixing screws
and adjust the plate so that correct locking and
sufficient compression of the door rubber sealing
strips is obtained.
If necessary, fit shims at (cc )P.
The rear edge of the front door must not stand
proud by more than 2 mm with respect to the front
edge of the rear door.
Tighten the screws (6 ).

Downloaded from www.Manualslib.com manuals search engine 2 OPERATION NO MA. 841-O : Adjmfing /he o’r,ors
II. ADJUSTING A REAR DOOR
1. Longitudinal adjustment :
Check the clearonce of the rear door with the
rear wing and with the front door :
J =6+~3mm
If necessary, fit Suitable shims ( of thickness 1 or
2 mm ) at points (( a N and (( b )).
a) Fitting shims at point II a * :
Remove screw ( 1) ond loosen screws (2).
Slide in at point I< a D under hinge the shim or
shims required.
Fix scr&v (2 ).and tighten the three hinge
fixing screws.
b)
Fitting shims at point e b u :
Remove distance strop fixing screws and pivot
it, around its axis.
Loosen the two hinge fixing screws (4).
Slide shims under hinge at point <, b >j.
Re-tighten fixing screws (4 1.
2. Transversal and height adjustments :
Check clearance between upper edge of window
frmne and
edqe of roof :
Jl =7+~2mm
Check also continuity of the G light line x
and the recess
of the rear door in relation ta
the front door : 2 mm max.
Loosen upper and lower hinge fixing screws.
Adjust door to obtain positioning (IS above.
Tighten fixing screws of these hinges.
Secure distance strap by its two screws (3)
3. Adjustment of striking plate engagement :
Loosen striking plate fixing screws (3) and adjust so as
to obtain correct locking of door and sufficient
compression of the rubber sealing strips.
If necessary, fit adjustment spacers at point o c u.
Check recess
of rear wing in relation ta rear
dwr : 2 mm max.
4: Position window-winder handle to obtain an angle.
of W = approximately 30’ when the window is
closed.

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 961-O : C/ 3fc ztzg and repairing a war winabzc’ hrating elcmcnt k’ Op. MA. 961-O 1
I. CHECKING
Power of heating resistance :
S&Ions ., 140 to 160 watts at 13.5 1: 0.2 volts
Estates .,.,............: . . . . . . . .._.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~.. 130 to 150 watts at 13.5 t 0.2 volts
To check :he heating resistance of a rear window. measure
Either the current flowing in the resistance, using an ammeter connected in series to the supply lead of
the element. The current should be :
Saloons ,..., ., ,. ,. ,..,. ,,., ,,,., _, ,. .,., ..l_. 9.2 to 10.6 amps at 12 volts
Estates . . .., ,,..._.__.. .:_._ ._ . ..8 5 to 9.8 amps at 12 volts
Or the resistance using an ohmmeter. Resistance should be :
Saloons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . j _..__.._....,. 1.1 to 1.3Q
Estates . .._...........,.,.,...,.....,..,..................................,,..,.,.,.,........,. 1 .2 to 1.4 !J
II. REPAIRING
1. Replacement of terminals : Tin that part of the terminal to be soldered. Solder it in the required location ( soldering iron ).
2. Repairing a section of the heating element : a) Obtain from the Replacement Parts Department :
- 1 Repair kit .,,..,,..,,.,.,.,.,,,.,.,,....,................,,,,,...,., ZC. 9 855 128 U
This M SECURIGLACE ))‘outfit includes :
- 1 Bottle of abrasive cleaning powder
- 1 Small bottle of conductive enamel
- 1 Tube of adhesive
- 1 Tube of hardener for adhesive
- 1 Small bottle of metallic powder
- 1 Roll of thick self-adhesive tape
- 1 Warning lamp for detecting cuts
- 1 Roll of self-adhesive tape for detecting cuts ( thermopaper )
- 1 Plastic spatula
- 1 Small glass plate ( for preparation of mixtures )
b)
Locating the cut : With the resistance fed as normal :
- Locate the defective resistance wire by sticking the adhesive detection tape at the centre of the rear
window ( interior side ) and on all resistance wires so that the tape is perpendicular to the latter.
The unbroken wires will turn the thermo-paper blue when they increase in temperature.
- Slide the two pointed probes of the warning lamp support on the cut wire. When the lamp lights up,
the pointed probes are on both sides of the break in the wire.
By slightly moving the probes along the length of the wire, the exact extent of the cut can be determined.