1988 CITROEN CX Wheel

- the road wheel,
- the wheelarch lining,
the belt protection covers,
- the engine oil filler plug.
Position:
- the valves of cylinder No. 1 in the “rocking” postion
(look Into the oil filler neck),
- the flywlleel, with marks + + aligned, Fig. I. t/hat mark 1s opposite screw 121,
- ttlat the:ie ar-e 35 pitches between marks and
passing al-ounc tensioner roller- (I 1.
Refit:
- the filler plug,
- the timing belt covers,
- the wheelarch lining,
- the wheel
Reconnect the battery negative cable

Toothed sector for locking the engine flywheel REMOVING/REFITTING THE TIMING
BUT, ON THE VEHICLE
---____ .-

loosen, Fig II,
- valve rocket adjustrnr:nt screws (4) so as to reduce
the stresses irl the camshaft.
Fit: Fig. 111,
- tool 6012-T, once the engine flywheel protective
plate has been rernoved
Remove, Fig. IV:
- the HH wheelarch rubber sealing strtp,
- the al&l-nator belt and housing,
- crankshaft pulley (5),
- timing belt casing 161,
- tool
6012-T, Fig. III
Slacken, Fig. IV,
- the two XI-ews (7) and 18) securing the autornatlc
tensioner by a half turn,
Compress the tensioner spring and retighterl screws
(71 and 18).
Remove:
the timing belt. Crarlkshaft rotation, two pnss~ble rrrothotls
a) i-rlgage the irighest gear and tul n the clank-
shaft by means oi the road wheel OI the wheel i-tub
b) Rotate ti-le crankstlaft 1i1 the normal direction
of eqne rotation using the crankshaft pulley fixing
screw fitted with a ciistsnce piece
Position:
- the pistons at mid-point of their stroke
ith the crankshaft key placed horizontally).
djust the valve clearance
Inlet = 0.10 mm
Exhaust = 0.25 mm

- crankshaft key horrrontally (with mark “c” stagge-
rred by 5’ upwards),
- mark “a” or “d” on camshaft,
- mark “b” on the rntermedrate shaft.
- Each timing mark on the belt must line up with the
tooth wheel marks.
Fit the belt (avoid contact with oil or grease).
Release, Fig. I and 111,
- tensioner roller screws (I 1 and 12) (let the spring act)
then tighten the screws.
Turn:
- the crankshaft 180’ clockwise.
Do not turn backwards
Release:
- the tensioner roller fixing screws then retrghten
starting with the upper screw (I ), Fig. I and Ill.
Turn:
- the crankshaft a further two turns clockwise.
Slacken, Fig. I and Ill:
- tensioner roller screws (1) and (21, (let the spring
react),
- then retighten starting with screw (I 1.
Fit:
- tool 6012-T., Fig. II. Install, Fig. lb:
the trming belt casing,
crankshaft pulley 13),
trghten screw (4)
to 8 mdaN on engine --r-829.A5
to 12.5 mdaN on engrne -+J6T.A5QQ
- the alternator belt and cover,
- the wheelarch rubber sealing strip.
Remove, Fig. II,
- tool 6012-T.
Fit:
- the cylinder head cover and gasket
ttightenrng torque: 0.6 mdaN).
Recouple:
- the accelerator control rod,
- the flexible hose,
- the cold start flap control cable.
Refit:
- the wheel,
Lower the vehicle to the ground.
NOTE:
- Camshaft toothed pulleys of engines 829.A5 and
J6T.A500 are identical but the fitment is different,
Fig. I.
- If, after carrying out the belt tensioning operation,
the timing belt is noisy when the engine is hot,
retension the belt with the engine hot.

yaltot 12) connectiriy iije turbocihaiger to the
flowrneter.
Loosen the 8 valve rockers setting screws as rnuci-1
as possible so as to reduce the stresses oli camshafts
Remove, Fig. II:
the wheelarch rubber sealing strip,
- tlrmng cover (3).
Engage lhe highest speed. Run the cl-ankshaft by
means of the wheel hub.
Line up:
rnarks “a” and “b” UP over the cenlre line x x’ pas-
sing through the centres of the tlrrring gears,
Fig. IV.
Remove
the chain tensioner (cj), Fig. IV.
NOTE:
BRAMPTON type tensioner, Fig. III:
When dismantling, hold the body iii) and pad (5) togc-
ther to prevent the parts from being scatter&
SEDlS type tensioner, Fig. V:
With a screwdrlver placed at “c”, turn to the left io
lock the pad before disrnarltllrlg.
Remove:
the carnshaft drive gear- wheel,
the tlrnlr-ig chain
NOTE:
BRAMPTON type tensioner, Fig. Ill
Before putting 11 irrlo i.)ir!ce, push the pistorl provided
with 11s spring fully home a~rtl turn clockwise Depress
pad (51 to release it
SEDIS type tensioner, Fig. V
1-o unlock the pad, turn tile sclewdrlver placed at “c”
to the right
Check, Fig. IV, that
the play between limiter pad (7) and the tlmng
chain IS.
Refit: 0.1 to 0.5 mm
-.
the timing case (tightened to 1.7 mdaN),
the wheelarch rubber sealing strip,
the HH front wheel.
Adjust the valve clearance:
Inlet : 0.15 mm
Exhaust : 0.20 mm
Fit:
the cylinderhead cover, (tighten the screws to
0.7 mdaN),
the Iniot rnanlfold,
he spai-king pluys,
the flowmeter to iurbocilarycr yalter
[Lower the vehicle to the ground

emove:
the I-oati Wi-l~~d,
- the wheelarch lrnrrng,
- the belt protectron covets
Position: Fig. I and II
the valves of cylrnder No. 1 rn the “rocking” ~OSI-
tion (look Into the engine 011 filler),
the flywheel wrth mar-ks- -alrgned,
- camsfraft gear wheel mark A opposite screw 12)
Loosen:
the nuts of the tensioners and compress the spring
of eacir tensloner. Hetighten the nuts.
Remove:
- injection pump belt,
- the trmrng belt
REFITTING
Fit, Fig. II:
the timrng belt- marks t-+-) and i-e-1 on the belt
should face the marks A and B on pinrons (there
are 35 pitches between A and B, passing around
the tensloner roller (I 1).
Loosen the nuts of the tensioner roller.
Install, Fig. III:
- tool 6Q28-T.K. on the roller
- the tool weight over the mark 2 of the rod, Fig 1V. Fitting the injection pump belt:
Run the engrne by 1 turn err the drrectrorr of rotation
until marks--- +- /Ino up, Fig. I
(wrth cylinder No 1 at the rnrtral trmrng
point)
Setting the pump to the injection point:
refer to Op @ MA. 146-011
Fit the InJectron purnf, drrvrng belt with the srde oppo-
site the roller, trght.
Slacken the roller nut. Let the roller- spring react
Tighten the rnut to 2 mdaN.
Rotate the engine by 2 turns in the direction of nor-
rnal rotation and check the pump timrng.
Remove the tools
Start the engine Warrn it up until the electric cooling
fans operate.
Retension the belt while the engine is hot, Fig. IV
Refit:
- the protectron covers,
- the wheelarch lining,
the road wheel

* CX @ No. 48
M25/660
- 2187 “2/87-- M25/648 M25/669 (2/87)
ROTO-DIESEL DPA MA 300 DPC MA 260 8443 A 1114 0 ROTO-DIESEL DPC MAS 100 DPC MAS 200 R 8443 A 360 A
or8361 B
ROTO-DIESEL F SL AC
0 ROTO-DIESEL F SL AC
CAV 71111796 0 CAV 71111796
ROTO-DIESEL RKB 45 SD 5422 @ ROT0 DIESEL RKB 45 SD 5422
ROTO-DIESEL RDNOSDC 6577B 0 ROTO-DIESEL RDNOSDC 6751 ROTO-DIESEL RDNOSDC 6850 C
BERU 0100 221 106
@ BERU 0100 221 106
BOSCH 0 250 200 059 BOSCH 0 250 200 059
ROTO-DIESEL R53 56 501B CO+@ ROTO-DIESEL R 53 56 502 R 53 56 503 C
Orange paint
White paint Blue paint
STATIC SETTING-2187
2187-
DYNAMIC
TIMING
IDLING SPEED
ANTI-STALL
MAXIMUM
NO LOAD
SPEED M 251660 M 25/648 M 251669
By timing marks on cylinder block and flywheel
4 12 k 0.05 mm 3.24 f 0.05 mm 3.58 t- 0.05 mm
BTDC BTDC BTDC
or 22O
or
4.71
19”
Engine hot at a speed of 800 t 25 rpm
10.30’ + 1 o
I go i 1”
800 I 25 rpm
DPA 800 t 25 rpm
DPC 800 t 50 rpm 800 & 50 rpm
4625 & 125 rpm
r
4400 + 125 rpm

CHECKING AND ADJUSTING
THE INJECTION SYSTEM
II. - INSPECTION AND TIMING OF THE “ROT0-DIESEL” INJECTION PUMP
Raise the LH side of the vehicle and support it on
stands.
Disconnect the battery negative lead.
Engage the 5th gear. Rotate the engine by turning the
wheel.
Set the No. 1 cylinder to the initial timing point,
Fig.1.
(look into the oil filter orifice).
- place cylinder No. 1 valves in the rocking position;
turn the crankshaft by one turn in the normal direc-
tion of engine rotation.
- align marks on the flywheel and on the crankcase
(++I.
- turn the crankshaft back through a quarter of a turn.
Remove either the plug (with a 32 mm ring spanner)
or the inspection plate depending on the type of the
pump.
Refit, Fig II or Ill, according to pump:
- the feeler,
- the support for the dial-gauge.
- the dial-gauge equipped with its right-angled lever.
Finding the pump internal timing point:
- turn the crankshaft in the direction of rotation until
the large pointer on the dial indicator starts moving
in the opposite direction.
- set “0” mark on the dial-gauge in line with the large
pointer.
Checking the injection pump timing:
- rotate the crankshaft by a quarter turn in the oppo-
site direction to its direction of rotation.
- turn back in the normal direction of rotation until the
“0” mark on the dial-gauge has been reached.
- in that position, marks (-1 and (c) should be in line,
Fig. I.
If not, re-check the timing. Timing the injection pump:
- set the engine to the initial trming point, Fig. I.
- turn the crankshaft by 114 turn in the opposite direc-
tion to normal direction of ro’tatron, then turn back
in the direction of rotation to bring marks t-+) and
+-I opposite.
Adjusting the pump timing, Fig. Ill:
Slacken off the injector pipe connections and the 4
attachment points.
Bring the pump to the injection point with the feeler
at the base of V-shaped groove (timing point).
Set the “0” mark on the dial opposite the needle on
the dial-gauge. Orientate the pump casing towards the
engine.
Slowly turn back to the injection point (needle facing
the “0” mark on the dial), by moving the pump
casing away from the engine (in the opposite direc-
tion to engine rotation).
Tighten the pump fixing nuts to 2.4 mdaN. During
this operation, the needle should not move.
Check the pump timing
Remove the timing tools.
Refit the plug, (tighten to 2 mdaN), or the inspec-
tion plate.
Seal the injection pump plug.
Tighten the injector pipe connections to 2 mdaN.
Reconnect the battery negative cable
Switch on the ignition (electrical STOP solenoid exci-
tation) and prime the fuel circuit using the manual
pump (5) located on the filter.
Fully depress the accelerator pedal to facilitate the
engine bleeding and start.
Note: the initial timing point corresponds to:
3.24 -L- 0.05 mm BTDC: M 25/648
4.32 + 0.05 mm BTDC: M 25/660 DPA pump
4.71 f 0.05 mm BTDC: M 25/660 DPC pump
8531