1975 Citroen CX Cooling fan

Downloaded from www.Manualslib.com manuals search engine 6 OPERATION No MA. 000 : Gezcral characteristics :
Weights : ( in kg ( Ib ) )
- Kerb weight ( with full tank of fuel ) ................................................................................
1385 ( 3053 )
- Weight on front axle ............................................................................................................. 880 ( 1940 1
- Weight on rear axle ..............................................................................
, ...................... ., ...... 505 ( 1113 )
- Gross Vehicle Weight ( including all optional equipment ) ............................................
2070 ( 4564 )
- Maximum authorised weight on front axle .......................................................................
1050 ( 2315 )
- Maximum authorised weight on rear axle ........................................................................
1030 ( 2271 )
- Gross Train Weight with 690 kg ( 1521 Ib ) trailer without brales .................................. 2700 ( 5952 )
Towing :
- Maximum authorised trailer weight ( gradient of 1 in 10 ) :
. a)u Standard D riehicle ......................................................................................................... 900 ( 1984 )
b) Vehicle equipped with twin electric cooling fans ........................................................ 1300 ( 2866 )
- Gross Train Weight with a 1300 kg ( 2866 lb ) trailer with brakes ................................
3370 ( 7429 )
- Maximum authorised trailer weiqht, within limits of G.T.W. .............................................
1500 ( 3307 )
- Maximum starting gradient ( at G. T. It’. ).
.............................................................. ..~ ................ 1 in 9 ( 11 % )
IMPORTANT NOTE : References to trailers without brakes bc) NOT APPLY in U.K.
III. GENERAL INFORMATION
Capacities :
- Fuel tank .._......................................,............................................................... : . . . . . 68 litres ( 15 galls )
- Cooling system ( Heater unit included) ( 20 dm2 - 310 sq.in ) . . . . . .
10.6 litres ( 18.6 pts )
- Heater unit alone . . . . . . . . . . . .
0.6 litres ( 1.05 pts )
- Engine oil :
- after draining * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.650 litres ( 8..2 pts )
- difference between Min and Max on dipstick . . . . . . . . . . . . . . . . .
1.1 litres ( 1.9 pts )
- Hydraulic system ( approx ) . . . . . . . . . . . . . . . . . . . . . .
4 litres ( 7 pts )
- Gearbox :
- after draining . .._._._......................................................... :.................................... 1.6 litres ( 2.8 pts )
- difference between Min and
Max on dipstick . . . . . . . . . . . . . :.
0.150 litres ( 6.26 pts )
- Boot volume :
- with rear seat in position ................................................................................. 1100 dm3 ( 38.85 cu.ft )
- with rear seat folded .......................................................................................... 2030 dm3 ( 71.70 cu.ft )

Downloaded from www.Manualslib.com manuals search engine 10 OPERATION No MA. 000 : (;vt/c~ra/ chorac/vris/ics
Weights in kg ( lb )
- Kerb weight I wit/~ iLlI /m/k. oi !IIVI )
.......................................................................
- Weight on the front axle .......................
........................ ........... .......................
- Weight on the rear axle ......................... ....................................................................
- Gross Vehicle Weight
....... ...........................................................................
........... 1300 ( 2866 )
870 ( 1918 )
430 ( 948 )
1790 ( 3946 )
- Maximum authorised weight on the fr-ont axle . . . . . . . . . . . . . . . . . . . . . . . . . . .._..._..._._......._._._....._..._.. 1050 ( 2315 )
- Maximum authorised weight on the rear axle
. . . . . . . . . ..~.. . . . . . . . . . . . . . . . 750 ( 1653 )
- Gross Train Weight (with a 1300 kg ( 2866 lb ) trailer ) . . . . . . . . .
3090 ( 6812 )
- Gross Train Weight ( with a 650 kg ( 1433 lb ) trailer without brakes ) . . . . 2440 ( 5379 )
Towing :
- Maximum weight of trailer without brakes
..... __ ......................................................... 650 ( 1433 )
- Maximum weight of trailer ( within G.T.W. limit of 3090 kg ( 6812 lb ) .....................
1500 ( 3307 )
- Maximum starting gradient ( at G.T.W. ) ..................................................... ..............
12% (1 in8 l/2)
NOTE For towing a trailer heavier than 900 kg ( 1984 lb ). ‘t . 1 1s necessary to fit a second lo-blade electric
cooling fan.
IMPORTANT NOTE : References to trailers without brakes DO NOT APPLY in U.K.
III. GENERAL INFORMATION
Capacities :
- Fuel tank .__._.___..._....__..__...,.._.,.....__________.___.___.___.__.__.__._...................,..... : ._.___.____._. 68 litres ( 15 galls )
- Cooling system f
itfcltrrlivg hcatcr rirlil ) :
- Manual or torque converter gearbox .._..._..__._._,.._..._._.. _..._._._......._......._._._...... 10.6 litres ( 18.6 pts )
- Optional torque converter t air-conditioning unit .._...............................
12.5 litres ( 22 pts )
- Heater unit alone _. _..._._._..,_ _..._.........,....._._._....__.___......... ._. _._._._._....._., .,,._......._. 0.6 litres ( 1.05 pts )
- Engine oil :
- after draining
_..,.._._._....___..._.__....................._._._..._..._....._..._._._................... 4.650 litres (8.2 pts )
- difference between Min. and Max. on dipstick 1.1 litres ( 1.9 pts )
- Hydraulic system ( approx ) _....,_._.__.._._.........,..._..._._.___._......._._._._._._._..................... 4 litres ( 7 pts )
- Gearbox :
_ Overall cspacity ( TOTAL EP 80 ) . . . . . .._.... .._._._..._._._....._._._..._..._... 1.600 litres ( 2.8 pts )
- Difference between Min. and Max. on dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.150 litres ( 0.26 pts )
h) Torque con7~c~rter grarbos :
- Overall capacity ( TOTAL FLUIDE T ) _._._._._.,_...._........_.._.................... 5.5 litres ( 9.7 pts )
- After draining _._,_,_,_.,._.._......_._._._._._._..._..._._._._..._._..__._..._._..................... 2 to 3 litres ( 3.5 to 5.3 pts )
according to draining time
- Difference between Min. and Max. on dipstick (r!,ith
the oil cold) _._,...... 0.150 litres ( 0.26 pts )
-Usable volume of boot .~...............,.........,,............................................. . . 325 dm3 ( 11.48 cu.ft )

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 142-O : Adj,,s/iaji f/a<, rarhnrt,//or Op. MA. 142.0
1
ADJUSTING THE IDLING SPEED
To carry out this adjustment, the following is needed
A tachometer
A device lor checkinq idling speed adjustments on the carburettor ( or on approved gas analyser )
- A CDA 23 checking oppmotus or a workshop test bench ( equipment mentioned in the Equipment and Repair
Materials list, or in the Tools and Equipment notes green notes )
NOTE : WEBER Carburettors ref. No W 54-50, 55-50, 69-50, 74-50 fitted on 1977 models onwards ore fitted with a
fool-proof plug ( white ) on the mixture screw. To adjust the exhaust emission, this plug has to be
removed, and
replaced, after adjustment, with a a Repair PI plug ( black ). See Op. MA, 142-000 for removing and fitting the plug,
and the necessary tools.
ADJUSTMENT CONDITIONS
1.
The idling speed adjus!ment must be carried out on an engine on which the rocker clearances and the ignition
are correctly set. with a clean air filter and
with the engine in good order.
2. Check that the butterflies return fully to their stops.
3. 30 not let pnythinq except the ignition and the engine cooling fan ( or ions ) impose any load on the alternator.
4. Run the engine to bring the
oil temperature up to 70 to 80’ C ( wait for the electric cooling fan ( or fans 1 to cut
in 1.
I. M 20/616, M 22/617, M 23/623 ENGINES I i< ?I< (5 wi/hr ,111 /or<,,,< co,1, <,r,cr or air ro,,di/io,ii?,g I ,I ‘-/
1. Wait for the electric cooling fan ( or fans ) to cut in.
2. Adjust screw (3) controlling the first choke butterfly opening until the following result is obtained : an idling
speed of 850 to 900 rpm.
3. Slowly adjust mixture screw ( 2) to obtain the following result
1.5 to 2.5 “/ of CO
1 7h~se authoris<, 8.7
% or more of CO2 nmbiot~l I~mpcuatur~ 0i 1 Y to 30” C.
4. Adjust screws (3 ) and (2 ) so that both the idling speed and the quantity of CO and CO 2 me correct.
Make sure that mixture screw (2) is adjusted last

Downloaded from www.Manualslib.com manuals search engine 2 OPERATION No MA. 142-O : A 1. Wait for the electric cooling fans to cut in
2. Engine idling speed
: Adjust screw (3) to obtain the following result idling speed of 850 to 900 rpm.
3. Slowly adjust mixture screw (2) so os to obtain the following result
1.5 to 2.5 % of CO
1 ‘, hiT<, “,, /horiscd r 8.7 ‘/ or more of co* nmhic,,/ l<~,,,pv,‘ntrr~c 0, I5 lo W” (.
4. Adjust screws (3) and (2 ) so that both the idlinq speed and the quantities of CO and CO2 are correct
Make surf that mixture screw (2) is odiusted last.
5. Fast idling speed :
Sa’itrh 012 Ihc nir rwdilim,h~g compr~~ssol: and adjust saew (4) to obtain the followinq Fast idling
speed of 1000 to 1050 rpm.
NOTE
: In case this idling speed is impossible to obtain the capsule can be moved ( by unscrewinq its two
fixihg
screws on the carburettor ) in order to reduce the clearance ot the fixing point of the rod opening the
first choke butterfly.
NOTE : On vehicles fitted with air-conditioninq the compressor must be switched off during adjustment
1. Wait for the electric cooling fans to cut in.
2. Engine idling speed
: with the gear lever in the o Neutral >) or /( Parking >a position. adjust screw (3) for the
opening of the first choke butterfly to obtain the followinq
an idling speed of 700 to 750 rpm.
3. Slowly adjust the mixture SCEW (2 ) so as to obtain
115 to 2.5 “/, of CO ‘l’h~sc anlhorisrd rcndin~ rorrc,spoad Iv m,
8.7 ‘7,
or more of CO 21 m~bt~wi I ~cnipw7tnr~~ 01 I i k, 30” (.
4. Adjust screws (3) and (2) so that both the idling speed and the quantities of CO and CO2 are correct Make
sure that mixture screw (2) is adiusted last.
5. Fast idling speed : wilh /he hnsdbmkr npplic,d, furl cz SPOT ..,gayt>d : adjust screw ! 4) to obtain the following;
fast idling speed of 725 to 775 rpm.

Downloaded from www.Manualslib.com manuals search engine CHECKING THE SAFETY DEVICE FOR THE CHOKE
f (.X 2000 j :
1. Electrical components :
Disconnect the u blur )) lead feeding the thermal
switch (1) located on the water outlet duct on
the cylinder head.
Switch on the ignition.
Earth the lead from thermal switch ( 1) the relay ( 2 )
for the << WEBER 1) electro-valve ( 3) must operate.
Leave the thermal switch disconnected with the
lead insulated from earth.
Pull the
choke knob. electro-valve (3) is supplied
by relay (2 ) and is closed by earthing via the choke
control.
2. Pneumatic components :
Disconnect from the air-supply valve ( 5) the
pipe (4) from the valve to the exhaust manifold.
Plug the pipe in order to avoid the exhaust pressure
deteriorating the end of the tube and the valve
Use the starter to rotate the engine.
In this position. the air pump (6 j must
not supply
air through the previously disconnected opening in
the air supply valve ( 5)
CHECKING THE AIR INJECTION
Push back the choke
In this position. the air-pump (6 ) must supply air
through the previously disconnected opening in the
air-supply valve ( 5 1.
Accelerate the engine, and suddenly decelerate
The injection of air throuqh the opening must stop
for a short while.
Run the engine until the cooling fan ( or fans ) cut
in.
Pull the choke out : the air flow through the opening
in the air supply valve ( 5) must cease.
Push the choke in : the air flow must resume.
Connect to the air-supply valve ( 5) the pipe ( 4 )
from the valve to the exhaust manifold.

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 142-O SD : (i ‘CC ,ii:: md nr/;,,sfinji //I<, “~,ti.pOlllLliol, .S,Sl~l,, k’
c s 11’1:/~12/1 ,\lAHKli’/ “,iH,(.,.li.S , Op. MA. 142-O SD 5
ADJUSTING THE IDLING SPEED AND THE CO READING ( (.. ‘01~0 I
- IMPORTANT : II i nhsr,l,,/<~l, irirhi<&,, ,o rhnri~q~, /he sv//ing o, .Y,<,,I-r< lo,, , I , ,o, //a~ ~i.l <’ h,,,,<~r-,,,
2 I, hirh hns /,<,,‘I, “ : 0
m n (I vehicle fitted with the following :
m
-.
“, - distributor : DUCELLIER 4510 B
6
Dwell ratio 61 ‘:: ? 3 ‘,
x
2 Dwell angle
557 i 2=
Static advance 6
i
Strobe liming 6. at 850 rpm
;
F Centrifugal curve LA 2
a
a - carburettor : WEBER 34 DMTR 29/200 Identification mark W 61-00
5
“2 - spark plugs : AC 42 FS ( g.ap : 0.7 mm )
- engine with the following rocker cleoronces : Inlet 0.15 mm, Exhaust : 0.20 mm
Checking or adjusting the CO reading is carried out in the following conditions
1. Disconnect from the air-supply valve the pipe from the valve to the exhaust mariifold.
2. Bring the engine ail up to a temperature of 85” ? 5” C.
3. Wait.until the cooling fan f or fnvs 1 cut in.
4. Adjust screw ( 3) for the first choke butterfly in order to obtain on idling speed of 850 to 900 rpm
5. Slowly adjust the mixture screw (2 ) so as to obtain a CO reading of 2 to 3 “A for a temperature of 15 to 30” C
6. Adjust the mixture screw (2 1 last.
7. Adiust the throttle butterfly opening :
Disconnect one of the leads from the S( PIERBURG n electro-valve
Adjust screw (4) to obtain on engine speed of 1450 + 50 rpm
Connect the S< PIERBURG n electro-valve
8. Connect to the air-supply valve, the pipe from the valve to the exhaust manifold.

Downloaded from www.Manualslib.com manuals search engine 28 OPERATION N” MA.IE. 144-O : Ch <,c ,ng n,,d nlfjusfiup Ihe u I.-~<~tro,,ir i) <~lrr/mr,ir k’
/,,,.I i,,jrr/io,, S~S,W1, ANNEXE : D - ADJUSTING THE IDLING SPEED AND THE EXHAUST EMISSION
CHECKING CONDITIONS
1.
Checking the idling speed must be carried out
on a clean engine on which the ignition and the
valve clearances are properly adjusted and
fitted with a clean air-filter.
2. Check that the throttle butterfly returns correctly
to its stop.
3. Do not load the alternator by switching an any
of the electrical components, except the iqnition
and the electric cooling fan (s) 4.
Run the engine to bring the oil temperature up
to 70 +o 80’ C ( wait for the electric cooling
fan is) to cut in ). IMPORTANT : Use exclusively (I high tension
tachometer ( do not damage the H.T. lead of
the ignition wiring harness ).
ADJUSTMENT
1. Check that the butterfly is not jammed in position
when it is resting against its stop.
2. Wait for the electric cooling fan (s) to cut in.
3. Use screw ( 1 ) to adjust the idling speed to 850
to 900 rpm.
4. Check the exhaust emission :
The resulting amount of CO - CO2 ( corrected CO
reading 1 must be beI& 4.5 %.
In case this reading cannot be obtained, check the
valve clearances, the ignition, the fuel pressure,
the air-tightness of the aircircuit, and the complete
fuel injection system.
5. On (I vehicle fitted with optional oirtonditioning
switch the compressor on, and adjust the idling
speed from 1000 to 1050
rpm, by adjusting the
screw on the auxiliary box located next to the
electro-vol”e.

Downloaded from www.Manualslib.com manuals search engine 6. Electric cooling fans :
- 16 dm2 (248 sq.in ) radiator ( CX 2000 except optional towing equipment ) ,......... 1
- 20 dm2 (310 sq.in ) radiator (CX 2000 and 2200 except optional towing
equipment, or torque converter, or air-conditioning) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
- 20 dm2 (310 sq.in ) radiator ( CX 2200 with optional towing equipment or
torque converter ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
20 dm2 (310 sq.in ) radiator ( CX 2200 with air-conditioning) ,............................... 2
- 20 dm2 (310 sq.in) radiator ( CX Prestige) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
- 20 dm2 (310 sq.in) radiator (CX 2400, except optional towing equipment
or torque converter, or air-conditioning ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
20 dm2 ( 310 sq .in ) radiator ( CX 2400 with optional towing equipment, or
torque converter, or air-conditioning ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
- 23 dm2 (356.5 sq.in ) radiator, ( CX 2400 GTi except optional towing equipment ) 1
- 23 dm2 (356.5 sq.in) radiator, (CX 2400 and Prestige with optional torque
converter and air~conditioning, and CX 2400 Gti with optional towing
equipment ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 O-blade fan
5-blade fan
5-blade fans
lo-blade fans
1 O-blade fans
1 O-blade fan
1 O-blade fans
10 blade fan
lo-blade fans
The electric cooling fans are controlled by a thermal switch (011 /he
radiator)
e Power rating of electric fan : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 W
Direction of rotation ( S(J(‘IJ ~YOIII
c>lcctric ~/o/or side of /alI ) : . . . . . Clockwise
- Cut-in thermal switch :
1.6 dm2 (248 sq.in ) 20 dm2 ( 310 sq.in ) and
radiator 23 dm2 (356.5 sq.in,) rads
- Electric fan ( s ) cuts in at . . 101 to
103.5” c, 95 to loo0 c
-. Electric fan ( s ) cuts out (with
trmperatnw decreasing )
at : ._._._._._........... 9 5 to 920 c 95 to 9o” c
- Tightening torque (fit gasket with LOCTITE FRENETANCH ) : 1.8 to 2 da Nm ( 13 to 14.5 ft.lbs)