1988 CITROEN CX Service Manual

- 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

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

A TIMING CHAIN, A CHAIN TENSIONER
ON THE VEHICLE