1977 Citroen CX oil pressure

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 OPERATION No MA. 220-O : (.hrrkinfi Ih e oil pr~ssrrrc m the rehicle Op. MA. 220.0 1
CHECKING THE OIL PRESSURE ON THE VEHICLE
79-T 1. Remove spare
wheel.
2. Check oil level if necessary.
4. Preparing pressure checking apparatus
Connect pressure gauge 2279-T ( ,wdun/r~l
imn 0 /o IO hnrs 1 to union 6004-T.
Tiqhten union screw ( 3 )
6. Start engine With oil temperature at 100’ C pressure should
be :
a+ 2000 rpm 3 bars mini43.5 psi ) o+ 4000 rpm 4 to 5 bars (58 to 72.5psi)
7. Rrmave union 6004-T and pressure qouqe. Tightening torque : 30 to 35 m \ ( 3 to 3.5 m.kg)
( 21 l/2 to 25 l/2 ft.lb )
Connect supply lead
Replace spare wheel
NOTE This operation con also be carried out
with the aid of CI MULLER kit,reference 451.

Downloaded from www.Manualslib.com manuals search engine TORQUE CONVERTER
I. CHARACTERISTICS
- Torque converter with incorporated disc clutch. Make FERODO ( VERTO system ). Type 697 ( CX 2200 )
or 693 ( CX 2400 ).
_ Clutch engagement and disengagement are controlled by a hydraulic system with an electro valve unit
I This electro-va,lve is itself controlled by an electric switch operated by the gearbox selector shafts.
- Conversion ratio of converter 2 30 1 ( 697 type )
2.20 1 ( 693 type ) II. SPECIAL FEATURES
Adiustments :
- Contact gap in electric switch unit ,controlling the electro-valve
NOTE The gap for the 2nd/ 3rd gear contacts must only be adjusted once the selector shaft stop-screws have
been adjusted ( See Op. MA. 330-00 ),
- Gap at 2nd/ 3rd gear contacts 0 8 to 1.1 mm
- Gap at lst/ Rev. gear contacts ’ 13+02mm
. . . . . . . . . . . . .._.......
- Operating pressure for the converter oil system c /)IIv//~ ~c,I//v/I J :
- at 700 rpm 3.5 bars ( 51 psi ) min
_ at 2000 i A00 rpm 5.5 bars ( 80 psi 1 min 1
Oil l,c~~~i/~~~i’NItrrc~ 80: (.
- at maximum revs .,......... 10 bars ( 145 psi ) ( II./IN/<‘I (‘7 /h(, I<,ml,(a,‘flt~ro )

Downloaded from www.Manualslib.com manuals search engine 2 OPERATION No MA. 390-O : Checking the hydra&c conponmts on the.uehicle
f Mnnual sirrrin~ uehicles J CHECKS
4. Checking the main accumulator : a) Disconnect HP inlet pipe ( 1) from safety
valve.
b) Plug HP inlet pipe fusing p[u~s D
and E ). : c ) Tighten pressure regulator bleed screw.
Disconnect contact breaker lead from coil.
Operate storter,watching the pressure g”“ge :
the pressure should rise steadily and then
appear to stobilize.
Note this reading, which is the inflation
pressure of acc”mulator.
This preksure must equal 62 ‘, To
bars
(899 IE,psi) Corned lead of contact breaker
5. Checking cut-out :
a) Checking cut-out ~TPSSU~~~ : Start engine.
With pressure regulator bleed screw tightened,
examine the pressure gauge.
When pressure stops rising, reading indicates
maximum cut-out pressure.
This pressure m”st be equal to
170 t’5 bars
(2466 ?,73 p:i ). When the c”t-o”t pressure is obtained allow
the engine to nrn for a few minutes in order
to stabilize pressure.
Stop engine.
Examine the pressure gauge and note the fall
in pressure for the next 3
minutes. If the fall in’pressure exceeds
10 bark 4 145psi) check seai of plug D and repeat, the test sequence.
If the result of test is the some, the pressure
regulator is defective,
Replace it 01 repair it.
When cutout takes place, slightly slacken
pressure regulator bleed screw.
The pressure should fall gently then rise (IS~.
soon (IS the HP pump begins to operate.
The minimum reading indicated on tbe pressure
gauge corresponds to the cut-in pressure.
This pressure must be 145 +,5 bars
(2103 ?,73
psi ). If these cut-in and cot-out pressures do
not lie within the given tolerances, check the
pressure regulator.
c) Slacken the pressure regulator bleed screw.
d) Remove plug D and connect HP inlet pipe ( 1)
to safety valve.

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 390-O : Checkin
P the hydraulic componm~s on the ucbicle Op. MA. 390-O 3
f Mama sleeting wbi&s I
6. Checking the safety valve :
=I
bl
Cl
dl
Remove safety v&e fixing screw ( 1 ).
Remove from safety valve :
supply pipe for front suspension (2 ),
- supply pipe for rem suspension (3):
Plug openings of safety valve ( pIugs E J.
Tighten pressure regulator bleed screw
and
start engine.
Disconnect rubher overflow return pipe and
watch aperture ~a>> of safety valve.
- I/ Iherr is a slight c7moa,,t 0, sHymge thr
sa/cty ~dve is s in good ordrv n.
el
-If thrr~ is a discharge of fluid the sniw
dw must be rqlacrd..
f ) Slacken pressure regulator bleed screw-
Conned overflow return pipe to safety valve.
Secure safety valve ( screw (( 1 a) 1.
7. Checking the safety valve slidevolve :
a) Remove plug from rem suspension outlet on
safety v&e at G b >a.
b ) Disconnect contact breaker lead on coil and
turn engine using stmter : fluid should start
to run through the opening a d N when pressure
reaches
1lLl +o 130 bars ( 1585 to 1885 psi )
c) Slacken pressure regulator bleed screw.
Connect contact breaker lead.
d ) Plug safety valve opening u b )) (plug E ).
8. Checking the hydraulic brake contml :
m ) Tighten pressure regulator bleed screw.
b) Start up engine.
When cut-out takes place wait a fen: seconds
for the pressure to stobilize.
Stop engine%
Watch pressure gauge and note the pressure
drop in the next 3
minutes. If pressure drop
exceeds 10 bors*( 145 psi ) repeat the test.
If the re< is the same. the broke control
valve is defective : change it.

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 510-00 : \m//l‘!yc~tl/ <‘,/I 0 t Ih<’ <‘It,< Ir.itnl iusrtlllnliritt Op. MA. 510-00 3
f 0 lO7i-l,‘1975 )
DESCRIPTION OF THE COMPONENTS
!ep. Description and Position Rep. ‘D escription and Position
1
Right hand sidelamp ...... 74 51
Flasher unit .. ....... 21
Front right hand direction indicator ..... 21 52 Lighting and starter switch .... .4 8’44- 61
2 Right-hand headlamp Main beam .. 78 5.3
76 54 Petrol gauge rheostat ........ 25
Dipped beam
Right hand window winder control switch
3 Right~hand horn ............ 42
( O/)liWlNl J ................. 51
4 Left-hand horn ...
41 55 Heating control illumination f ~///io~n/) .. 68
5 Left-hand headlamp : Main beam ....... 77 56
Left hand window winder switch ( O/JI~OII~/~~~
Dipped beam ...... 75 57
Heated rear window switch Op/io~nl j ...... 14
6 Front left-hand direction indicator ... 16 58
Lightinq switch unit ............. ........... 72
Front left hand sidelamp ................. 69
Speedometer and tachometer lighting
8 Electric fan thermal switch .................. 59
rheostat ....... ...... .................... 28 10
Electric fan .......
58 59 Instrument panel : 11
Starter ...... ... .............. .......... 3
Thermal voltmeter and illumination .. 26-28 12
Alternator ............................ ........ 5 13 Petrol gauge and illumination ............ 25-69
Ignition coil ... ......... .............. 61 14
Speedometer and tachometer lighting 28
High tension sensor ....................... 64
Clock and clock illumination ....... 1667 15
Compressor for horn ............ ..... ...... 43
Heated rear window warning lamp ....... 15 16
Compressor relay ................... ..... 43
Headlamp dipped beam warning lamp ... 75 17
Battery ............. .... .. 1
Brake pad wear warning lamp .......... 27 18
Voltage regulator ......................... 6
Oil temperature warning lamp ............ 35
19
HT sensor for No. 1 cylinder ........... 64
Coolant temperature warning lamp ....... 29 20
Distributor ..................... ...........
61 Emergency stop warning lamps 32” 34
21
Windscreen washer pump ............. 36
Hydraulic pressure warning lamp ...... 31 22
Plug for diagnostic operations ............. .65
Warning lamp for hazard warning.. ...... 17 23
Engine oil pressure switch .............. .. 34
Sidelamp warning lamp ................... 70 24
Idle cut-off ....................... .60
Direction indicators warning lamp ........... 23 25
Engine oil temperature switch ........... 35
Headlamp main beam warning lamp ... 77 26
Enqine coolant temp. switch ... 30 60 Left-hand control panel : 27
Top dead centre sensor ........................ 64 Direction indicator and hazard warning 19 28
Reversing lamp switch ........................ 8
- Horns .................................... 41 30
Window winder control relay( Optior~nl ) .. ..4 9
Windscreen wiper motor ............... 38-39 31
Heating relay ............ ..................... 45
- Windscreen washer pump .......... . .......... 37 32
Electric fan relay ................................ 58 61
Rear right-hand lamp cluster 33
Front right-hand brake unit ................. 28
- Rear lamp ............................................... 73 34
Windscre,en wiper motor ........................ 38
- Stoplamp ............. .....
............ 53
35
Blower motor ............ .............................. 45
Direction indicator ................................... 19 36
Hydraulic pressure switch ...................... . 32
- Reversing lamp ..................................... 9 37
Stoplamp switch.. ......................................... 53 62
Boot lamp ................................................. 12 38
Fuse boxes ..... 8-44-45-49-69-72 63 Rear window heating element ................... 14 39
Front left-hand brake unit .......................... 26 64
Right-hand number plate lamp ................. 72 41
Front right-hand door switch ................... 11 65
Left-hand number plate lamp ................... 70 42
Right-hand window winder motor f Optiollal) 51 66
Boot lamp switch ........................................ 12 43 Glove box
lamp ...................................... 51 67 Rear left-hand .lamp cluster 44
Front left-hand door switch ........ .......... 10 - Rear lamp ................................................ 71 45
Left-hand window winder motor (Oplio~fll) 47 s Stoplamp ........................................... 52 46
Interior lamp ................................................. 10
- Direction indicator lamp ..................... 18 47
Cigar lighter and illumination ............... .13-67
- Reversing lamp .................................... 8 48
Accessory plug ..... ... .......................... .... 50
49
Ashtray illumination ,., ... ................ 66 DESCRIPTION OF THE WIRING HARNESS
lot marked :
Front harness co Compressor harness AR
Rear harness C Boot harness
M Engine harness PC
Boot lid harness LG
Window operation D Fault finding harness ( Diagnostic) TB
Instrument panel harness FV Flying lead

Downloaded from www.Manualslib.com manuals search engine TABLE OF BULBS
Use No. Base
Type Voltage Wattage French standard
reference

ain and dipped beams 2 P. 45 t 41 yellow 12 v 40145 w R. 136-15
(for France)
Quartz-Iodine long-
range headlamps
( Optional ) 2 x 511 -H2 12
v 55 w R. 136-17
Direction indicator
lamps
Stop lamps
Reversing lamps Pear-shaped
BA.15s 19
P 25/l 12 v 21 w R. 136-12
Front side lamps and
rear lamps
Number plate lamps
Interior lamp
Boot lighting BA.lSs/ 19
Festoon 12 v 5w R. 136-13 12
v 5w R. 136-14
Dashboard lighting 5
BA. 9 s T 8/2 12 v 2w R. 136-34
Glovebox lighting 1
Warning lamp
Lighting for cigar
lighter
Ashtray lighting 13
1
1 Wedge base 12 v 1.2 w KEY TO CIRCUIT ,DIAGRAM SYMBOLS
Wiring connector
Connection block
Fuse
Switch, manual
Switch, mechanica
Switch, pressure
Switch, thermal 1 Capacitor
Motor, electric
0 Lighting
$ Warning lamp
4 a Instrument dial
Resistor
I
Rheostat
Coil winding

Downloaded from www.Manualslib.com manuals search engine TABLE OF FUSES
Supply to
eater unit relay Fuse
Circuits protected
Rating Colour
16 Amps Mauve Heater unit
S toplamps
Accessory terminal
Glove box lightinq
Positive terminal
of battery u + )) 16 Amps Red
E Direction indicators
Ignition Windscreen wipers and washers
switch Horns
Heater relay windinq
Window-winder relay winding
Rheostat -speedometer lighting
Warning lamp panel ( Battery
meter ( Thermal voltmeter-- Brake pad wear warning
lamp - Fuel gauge - Oil pressure warning lamp -
Hydraulic fluid pressure warning lamp-Water temp.
warning lamp )
16 Amps Green Interior lamp
Boot lamp
Cigar-lighter
Clock
Hazard warning lamps
E Voltage regulator
Iqnition Reversing lamps
switch
Rear window heating element
Handbrake warning lamp
Window winder relay 16 Amps White R.H. Switch 0 R.H. window winder
L.H. Switch- L.H. window winder
Lighting
Switch 10 Amps Yellow Ashtray lighting
Cigar lighting
Heater controls lighting
Instrument panel lighting Clock
E Battery meter
Odometers
Sidelamp warning
L.H. sidelamps, front and rear 1 amp
Lighting
Switch 10 Amps Blue R.H. sidelamps, front and rear
Number-plate lamp CIRCUIT DIAGRAM
>
P.T.O.