1977 Citroen CX Torque head

Downloaded from www.Manualslib.com manuals search engine OPERATIONS
The sequence of operations has been devised in order to obtain the best standard of work in the
shortest possible time.
The numbering of the operations is made up as follows
a) The code letter for the car (/ MA 3) for all CX vehicles except CX vehicles with ,c Fuel Injection )I.
b ) A number made up of three figures denoting the unit or its component.
c ) A figure code designating the type of repair
- the figures 0 0 0 indicate the characteristics of the car
the figures 0 0 indicate the characteristics of the unit
- the figure 0 indicates checks and adjustments
the figures 1 4. 7 indicate removal or fitting
- the figures 2. 5. 8 indicate dismantling or reassembly and
the figures 3 6 9 indicate reconditioning
The thumb-indexing which corresponds to the list of operations enables the particular operation
to be found without difficulty. TOOLING
Special tooling is denoted in the text by a number followed by the letter ‘I
The part-numbers inferior to the 6000 series concern tools aiready in use and common to vehicles
previously introduced and to CX vehicles.
The 6000 series refers to tools specially designed for CX vehicles
Additional tools of local manufacture are indicated in the text by a number preceded by the index
MR manufacturing drawings for these tools appear at the end of the particular volume filed in
numerical order. TIGHTENING TORQUES :
Torques are expressed in the following units
either in metres Newton ( m.N ) the legal unit for measuring torque. with the corresponding
amount in metre-kilogrammes ( m.kg )
or in decanewtonmetres ( da Nm ) 9.8i Nm 1 m.kg ci.981 daNm
The numbers corresponding to the torques are (t rounded off 1)
Examples 2 m.N 0.2
m..kg 60 m.N 6
m.kg
IMPORTANT When a tightening torque figure is followed by the words 11 torque wrench 11 the
operution must without fail be carried out with a torque wrench.
IMPORTANT WlTHOUT FAIL after each operation or group of operations there is a chapter
headed (, TIGHTENING TORQUES ,,; the screws nuts or studs which are underlined
indicate
that they are of a special grade ,c SECURITY HARDWARE 1). When refitting it is ESSENTIAL
to use this type of HARDWARE TO THE EXCLUSION OF ANY OTHER. ADVISORY SERVICE
For a!1 technical information concerning these vehicles please contact
The Service Department,
Citroen Cars Ltd..,
Mill St.,
Slough Berks. GE. Tel. Slough 23808
or DEPARTEMENT TECHNIQUE APRES-VENTE
ASSISTANCE TECHNIQUE -
92000 NANTERRE - FRANCE - Tel. 204 40 00 :
.- ---

Downloaded from www.Manualslib.com manuals search engine 5. Cylinder head :
Aluminium alloy, with hemispherical combustion chambers.
- Original height : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................ 90 mm
- Overall flatness to within : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...... 0.10 mm
- Flatness between fixing holes to within : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 mm
a) Head gasket :
Round clinching (diameter = 92.5 mm ), the identification mark (( CEFILAC 1) or (( COOPERS )) towards the
cylinder head ( 1985 cc ).
Oval clinching; the identification mark (( CEFILAC 1) towards the cylinder head (2175 cc ).
Round clinching (diameter = 96.5 mm ), the identification mark (( CEFILAC )) towards the cylinder head (2350 cc).
TIGHTFNING SEQUENCE
Tiqhtening torques f cold)
Initial tightening . . . . . . . . . . 3 da Nm
( 21 3/‘4 ft.Ib)
Final tightening . . . . . . . . . . . . . 6 to 6.5 da Nm
(43 l/2 to 47ft.Ib)
b) Valve seats :
The valve seats are fitted by temperature
shrinking.
VALVE SEAT WIDTH
INLET
I I I I I I T
17 13 9 5 1 4 8 12 16
EXHAUST

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 100-00 : Characteristics and special jeafruvs oj the cvlghv.
Op. MA. 100-00 17
9..Tightening torque :
a) Engine suspension :
4-.spc~~d manrlal gearbox :
7 Torque bar (( Nylstop )) fixing nuts : .............................................................. 8.2 da Nm ( 59 ft.Ib )
- Securing screws for the flexible bearer on the subframe ; ........................ 3 da Nm ( 22 ft.lb)
- Flexible bearer assembly screws :
..................................................... .
........ 10 da Nm (72 ft.lb)
S-sp~~tl n1m11ra1 gca~box. and forq~~c cour,c~rtrr gc~arkos
- Torque bar (( Nylstop )) fixing nuts : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 da Nm (72 ft.lb)
- R:H. flexible mountinq assembly screws : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 da Nm ( 72 ‘ft.lb )
- L.H. flexible bearer assembly screws : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 to 17 da Nm ( 116 to 123 ft.lb )
b) Crankcase :
Screws and nuts securing the timing cover : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 to 1.9 da Nm (10 to 14 ft.lb)
c) Timing :
- Screw on the camshaft thrust bearing : . . . . . . . . . . . .._............................................ 1 .4 to 1 .9 da Nm ( 10 to 14 ft.lb )
- Timing chain guide securing screw : . . . . . . . . . . . ..__................................ . . . . . . . . . . . . . . .
1.4 to 1.9 da Nm ( 10 to 14 ft.lb)
- Timing chain tensioner securing screw : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9 to 1 .I da Nm (6.5 to 8 ft.lb )
d) Lubrication system :
- Oil filter mounting ( LOCTITE FRENETANCH ) : ......................................
1 to 1 .5 da Nm ( 7 to 11 ft.lb )
- Oil temperature switch : .................................................................................. 3 to 3.5 da Nm ( 22 to 25 ft.lb )
- Union screw for cylinder head lubrication passage : ..................................
1 to 1 .2 da Nm ( 7 to 9 ft.lb )
- Oil filter cartridge ( SPV
wnrt/r]nctc/rer‘s rmte ) : ............................................ 1 .l to 1 .5 da Nm ( 8 to 11 ft.lb )
- Engine oil drain plug ( lo~!,c,r s/t~/p
co/‘cr) : .................................................. 3.5 to 4.5 da Nm (25 to 32.5 ft.lb)

Downloaded from www.Manualslib.com manuals search engine 2 OPERATION No MA. 210-00 :~~‘hornc:cris:ics mri special /~~nttrrc,.s o,/ /he ig/litiorl Spark plug gap .,...._.......,...,. ,..._. ,...... ., ,, ,,
Q.6 to 0.7 mm
1 iqhtenrng torque ( cylinder head cold ) .._..._._........._.......... .20 to 25 mN ( 2 to 2.5 m.kg)
f Smear the thread with e NO-BIND n ) - ( 14 l/2 to 18 ft.Ib ) IGNITION COIL
External resistor type
I Manufacturer
I DUCELLIER
I SEV MARCHAL
I MARELLI
Reference N” 2777 C E 44 910 312 BZR 206 A
Primary circuit resistance ( at 20” C ) 0.68 i 0.02 n 1.1 to 1.2 Q 0.8+ 10 .: ,R
Resistance of outer resistor (at 20” C ) 1.32 + 5 ‘; R 1.5 to 1.6 R 1.35 i 4 . . R
Secondary circuit resistance (at 20” C ) 7500 2 1000 n
6000 -!I 5 Cl 7500 + 10 !’ Q H.T. LEADS
Length in mm Resistance of leads ( at 20” C )
Manufacturer. .................. .......................................................... ..................................................... ELECTRIFIL
Reference ..................... ............. ........... ....... ....... ... ........................ ............ ......... Bougicord 400 RTF 33
All rY?biclas ( - I/’ 1975 1
Description of leads
Coil to distributor ............................ ...........
Distributor to No 1 cylinder ... . ..................
Distributor to No 2 cylinder .......................
Distributor to N” 3 cylinder ........................
Distributor to N” 4 cylinder ........................ 570 to 580 625 to 1025 !J
400 to 410 420 to 645 11
520 to 530 555 to 850 11
540 to 550 580 to 880 Q
710 to 720 770 to 1165 Q
I I I
Description of leads Length in mm
I Resistance of leads ( at 20” C )
Coil to distributor ......................................... 820 to83O- 10 1 75 -859 to 860
Distributor to No 1 cylinder ..................... 360 to 370
Distributor to N” 2 cylinder ........................ 520 to 530
Distributor to NC 3 cylinder ....................... 540 to 550
Distributor to N” 4 cylinder
...................... 710 to 720 920 to 1400 - 10 175 -93.3 to 1450
400 to 570 n
555 to 850 R
580 to 880 Q
770 to 1165 Q
I I 1

Downloaded from www.Manualslib.com manuals search engine CHARACTERISTICS
ENGINE REF.
........................................................................................... ........................ M 23/ 622
DISTRIBUTOR DUCELLIER ..................................................................................................................
Reference ..................................................................................................................... 525 100 A
Direction of rotation ( seen from drive end ) . .................................................................
Anti-clockwise
Star point gap ( between star point and sensor ) .............................................................. 0.3 to 0.5 mm
Angular positioning of star points ( symmetry of signal ) to within ........... ... ... ....... ..... 1” max.
Resistance of module 960 to 1140 fi .................................................................................................. Centrifugal
advance curve identification mark ................................. . ..................... LA 5
Vacuum advance correction
curve identification mark : ..................................................
LA 3 Static advance
: 10” engine flywheel . .’ Strobe setting
: 25’ at 2500 rpm SPARK PLUGS
Spark plug gap ................. ....
.................... ................... ....... 0.6 to 0.7 mm
......................... .........
Tightening torque ( cylinder head cold ) ....................................................................
2 to 2.5 daNm
( spl,(,c,)’ //T(, /hrc,nc/ /ig/T//>f cc,i//T H ,VO J~/,N/) )) ) ...................................................... (14.5 to 18 ft.lb )
I IGNITION COIL ‘AND TRANSISTORISED MODULE ASSEMBLY
I
Manufacturer ...............
................... ........ .............. .............. .......
AC - DELCO
...........................
Reference N” 210
....................................................... ...
....................................................
Resistance of coil primary circuit ( at 205 C ) ............................................................ 0.48 - 0.61 R
Resistance of coil secondary circuit ( at 20” C ) ......................................................... 8500 to 10500 fl H.T. LEADS
Description of leads Length in mm
Coil to distributor ....................... 1040 to 1050 mm
Cylinder N” 1 ............................ 440 to 450 mm
Cylinder N” 2 ............................. 520 to 530 mm
Cylinder N” 3 ................................ 780 to 790 mm
Cylinder No 4 850 to 860 mm
............................ Re:;istance of leads ( at 20L C )
I
1120 to 1765 (1
480 to 780 Q
530 to s95 Q
825 to 1335 Q
900 to 1445 R

Downloaded from www.Manualslib.com manuals search engine CHARACTERISTICS
1. Water circuit :
Self de-aerating type, with header tank.
- Filling : . . . . . . . .._................................................................................................................ Cap on header tank
- Level (Cold, iu de-upruled state ) : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See mark in header tank
- Coolant : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. Water + anti-freeze
- Circuit protection : - 15” C ( 28 -: of anti-freeze )
. . . . . . . . . . . . . . . . . . . . .
30” C ( 50 ? of anti-freeze )
2. Radiators :
Surface of radiator :
- cx 2000 ( - 11 1975 ) Except optional towing equipment : . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 dm2 ( 248 sq.in )
- cx 2000 ( - I/ I’)75 ) optional towing equipment : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 dm2 (310 sq.in)
- cx 2000 ( 1/ 1975 - ) and CX 2200 : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 dm2 ( 310 sq.in )
- CX Prestige, except optional torque converter-air conditioning : . . . . . . . . . . . . . . . . . . . . . . . . . . 20 dm2 ( 310 sq.in )
- CX 2400, except Injection and optional torque converter-air-conditioning : . . . . . . . . 20 dm2 (310 sq.in)
- CX 2400 torque converter - air-conditioning + CX 2400 GTi : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 dm2 ( 356.5 sq.in )
- CX
E Prestige torque converter - air-conditioning : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 dm2 ( 356.5 sq.in )
8
-7 NOTE : Radiators originally fitted to the vehicles differ according to the type of vehicle on which they are fitted,
co
_- 03 in the material used for the coolant channels, and the distance between the cooling fins.
T
2 3. Radiator cap (or pressure relief valve) calibration (rap scwzmcl 011) : . . . 1 bar (14.5 psi)
I 4. Thermostat :
- Make : .............................................................................................................................. CALORSTAT
- Reference No : ................................................................................................................ V 6215
- Begins to open at : ........................................................................................................ 84’ C
5. Thermal switch for temperature warning lamp (011 cyli~~d(,r-hc~ad)
- The warning lamp lights up (on the, ivstrrlmeut pnr~(,I) at the following temperatures :
- 16 dm2 (248 sq.in) radiator : . . . . . . . . . . . . .
Ii3 to 117O c
- 20 and 23 dm2 (310 and 356.5 sq.in) radiators : . . . . 110.5 to 113.5” c
- Tightening torque : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . .
2.5 to 3 da Nm (18 to 21.5 ft.lbs)
NOTE :
The coolant return hose for the heater unit has a white identification mark painted on it.
Make sure heater hoses are correctly fitted to the heater unit.

Downloaded from www.Manualslib.com manuals search engine COOLING SYSTEM
2 4 litre engine, torque converter and air conditinninq (Thermostat and heater unit open)
Partial view F
8
1 Radiator
2 Electric fon (5)
3 De-aerating pipe
4 Header tank
5 De-aeration chamber
6 Thermostat
7 Heater unit
8 Drain top
9 Cylinder head outlet tank Cold coolant
,
I-
J1
- 0 Thermal switch for electric fan (s)
l-J 7
6
Thermostat open

Downloaded from www.Manualslib.com manuals search engine ll, SPECIAL FEATURES
STEERING PINION
After adjusting wheel alignment, protrusion of track-rod thread in relation to lock-nut must be equal on either side
( .to within 2 mm )
Rack centre-point Protrusion of rack must be equal on either side of rack housing
- Clearance at rack plunger ( at minimum clearance point ) .O.l to 0.25
( at minimum clearance point ) ., .,...._...... .._._ 0 1 to 0.25 mm
- Rotational torque of pinion, after
adjustment of plunger .._..... .._.... 1.2 daNm ( 8 l/2 ft.lb)
L 44.3
Steering control :
- Clearance between universal joint, steering shaft and fixed
steering wheel tube spacer 0.25 to 1 mm
.._....__._..._.... ._..__..
- Position of steering wheel spoke in (( straight-ahead ))
position. single spoke pointing vertically downwards
- Angle of universal joint : 17” to the left approx. (with steering
wheel in (( straight-ahead )) position.
- Coupling for steering pinion flange ( steering shaft ) ....................................
- Flange on steering pinion ................................................................................
- Steering pinion securing flange ........................................................................
- Steering rack ball joint f rack Jacked )’ .............................................................
- Track-rod lock-nut ..............................................................................................
- Rack housing on steering crossmember ..........................................................
-. Steering crossmember on front subframe ..........................................................
- Nut for track-rod ball-joint ................. ................................... ..... ...................... Tightening torques :
- Flange for universal joint on steering shaft __..._.__.._._.........,.........................,. 1.3 to 1.4 daNm ( 9 11 2 to
lOft.lb)
- Fixed steering wheel tube attachments
. . . . . . . . . . . . . . . . . . . . . 1 9 to 2.1 daNm (13 l/2 to15ft.lb)
3.1 to 3.4 daNm (22 l/2 to 241/2ft,lb)
1.3 to 1.4 daNm ( 9 l/ 2 to 10 ft.lb)
1.3 to 1.4 daNm (9 l/2 to 10 ft.lb)
.5 to’5.5 daNm (36 to 40 ft.lb)
3.6 to 4 daNm ( 26 to 29 ft.lb)
2.5 to 2.8 daNm ( 18 to 20 l/2 ft.lb)
2.5 to 2.8 daNm (18 to 20 1/2ft.lb)
9 to 10 daNm ( 65 to 72 l/2 ft.lb)
- Greasing of steering rack TOTAL MULTIS MS