turn Citroen CX 1985 1.G Repair Manual

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 OPERATION No MA. 640.0 : ( h<,ck;ux n,,d od;es/ieg /he nir-~o,,di/io,,iri,~ Z\.SI<:IN Op. MA. 640-O
3
IV. FILLING THE REFRIGERATING CIRCUIT
using SOGEV equipment and a
PRESTOGAZ refill of R. 12
A. VEHICLES FITTED WITH A << ASPERA-FRIGO ,) COMPRESSOR
NOTE Equipment used for this operation :
a) SO(.I.,’ rori/<~iio,l Manufacturer Ets S.0.G.E.V
Avenue de 1 Atlantique Z.I. 91401 ORSAY -Tel. 907-64-00
b) I’Kli$ IoL:\/ ,v/i// o/ I?. II
1 kg refill supplied by the Replacement Parts Department under
ref. No.ZC 9 857 108 U.
IMPORTANT Precautions to be taken during this operation :
a) It is IMPERATIVE to wear goqqles.
b) Never smoke during the operation
R. 12 fluid turns into a toxic gas in the presence of LI flame
c) Never heat any port of the refriqerotinq circuit.
d) Never switch on the air-conditioninq system if either of the cooling fans are disconnected. 1. Drain the circuit :
NOTE
- This operation must be carried out in a well-
ventilated room.
- The refriqerating circcit must be drained before
any work can be carried out on it.
a) Remove pluq (7 ) from compressor intake valve
and connect in its place ( at (/ a /) ) flexible
pipe (4).
b) Remove pluqs ( 1 ) protecting adjustment screws
( 2 ) and ( 3 ) for the valves.
c ) Check tops ( 5) and (6 1 are properly closed
and screw in screw ( 3 1 two turns.
d) Place taps ( 5) and (6 ) in an open container
in order to contain the fluid, and to ovoid it
turning into mist. Open the taps. Close them
when draininq is complete ( when the hissing
produced by the escaping gas has stopped 1.
e) Proceed in the same tn(mner once flexible
pipe ( 4) is connected to the outlet valve, and
screw ( 2 ) is screwed in two turns.

Downloaded from www.Manualslib.com manuals search engine 4 OPERATION No MA. 640.0 : ( ht.< k;nS our/ ndj,,~/ir,~ I/><, ni~.rr,r,r/i/ior,i,,F sm,<,,,,.
,s ~16 2. Check the ccmpress~r oil level :
76.54
NOTE This check con only be carried out after having
drained the circuit. If not, dangerous splashing of oil
and refrigerating fluid occur. 0vrs rowed vd. I/,<’
rornprc ‘i YC,l hr ,I,. Yi,,S I,,,, s, /w a) Remove oil filler plug at (S a H and insert into orifice
gauge MR. 630-73/ 15 until it reaches the hottam
of the casing ( rotate crankshaft if necessary 1. The
oil level must be between the min. and max. marks on
the qauqe ( which correspond to a depth of oil of 21
to 29 mm ).
b I If necessary top up using TOTAL (< LUNARIA 25 ),
or SUNISO No.5 01 TEXACO CAPELLA << E )a
grade 500.
c) Remove gouge MR ‘630-73/ 15 and position the plug
with its seal.
3. Create a V(IEYU~ in the circuit :
NOTE This consists in creotinq a vacuum as complete
as possible in the circuit. to eliminate (by evaporation j
any trace of water which
would hinder the operation of
the refrigerating system.
- In the case of replacing the compressor. fully unscrew
screws ( 2 1 and ( 3 1 then screw in screw ( 2 ) two
turns after having connected flexible pipe ( 4) to the
intake valve.
* In other cases see paras. 1 and 2
a) Connect flexible pipe ( 4 i to the intake valve and
flexible pipe ( 6 1 from the vacuum pump to top ( 5 1.
b) Fully unscrew screw ( 3 1.
c ) Open tap [ 5) and switch on vacuum pump. following
the instructions on the S.O.G.E.V.instruction sheet.
di Run pump for a minimum
of 45 mins. Close tap ( 5)
and disconnect pipe ( 6 1 from it.
4. Refill the circuit :
a) Prepare the <( PRESTOGAZ n refill
Unscrew cf Presto-vanneu union ( 7 ) from tap ( 8 1
and connect it to the refill for this. make sure
I forcing if necessary ) that clip on union ( 7) is
fully clipped onto ridge of refill The threaded hole
of the o Presto-vanne )a union must be in line with
the refill valve.
NOTE It is advisable to tighten the clip on the
o Presto-wane >) union. if the union has already
been used for refilling.

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 642-W : ~Thnracteristics o/ thy, e I:Ko/I) - -70 3 hc,nriug s, stew Op. MA. 642-00 3
When starting : capsule is subjected to vacuum
Vacuum capsule
Westaflex tube
c J
J
COLD AIR
Closing plate for
SUPPLY SHUT OFF warm air supply
,
Flap B
I
to air filter
DIAGRAM.No. 1
‘acuum capsule not under vacuum
Flap
DIAGRAM No. 2
to air filter
Situated at the air-filter inlet. the vacuum capsule controls a flap and a closing plate allowing simultaneously supply
or no supply of warm air and no supply or supply of cold air. When starting ( Diagram 1 ) the capsule is subjected to
vacuum, the flap stops the supply of cold air, and the closing plate allows the supply of warm air to the air filter.
When the effect of the vacuum ceases, the capsule returns to length Ll ( Diagram 2 ) : the flap.opens, allowing supply
of cold air and the closing plate stops the supp[y of warm air.
The vacuum capsule operates via a thermal sensor.

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.