Citroen C5 2000 (DC/DE) / 1.G Manual Online

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78
CHECKING AND SETTING THE VALVE TIMING
Engine : XFX
Setting the valve timing (continued)
Adjusting the timing belt tension.
- Pivot the plate (25) of the tensioner roller (24), using a spanner (type FACOM S.161).
- Engage the screw(21)on the plate (25).
- Tighten the screws (21)and (22), tighten to 2,5 ± 0,1 m.daN.
- Position the belt under maximum tension ; pivot the tensioner roller (24),using a spanner
(type FACOM R 161).
- Tighten the nut (23) of the tensioner roller (24) , tighten to 1 ± 0,1 m.daN.
- Check that the camshaft pinion screws are not at the end of slots.
(By loosening one screw).
- Otherwise, restart the operation of positioning the timing belt.
- Tighten at least2 screwsper camshaft pulley to 1 ± 0,1 m.daN.
- Remove the tools [1], [2]and [4].
- Rotate the crankshaft 2 turnsin a clockwise direction.
IMPERATIVE : Never turn it back.
- Peg the crankshaft, using tool[2], and the camshaft pulleys, using tool [1].
- Untighten the nut(23)of the tensioner roller(24).
- Adjust the belt tension, pivoting the roller (24)using tool(type FACOM S.161).
B1EP15WCB1EP15XC

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79
CHECKING AND SETTING THE VALVE TIMING
Engine : XFX
Setting the valve timing (continued)
- Align the marks «c» and «d», without detensioning the timing belt.
(Failing this, restart the operation of adjusting the belt tension).
- Hold the tensioner roller (24).
- Tighten the nut(23), tighten to 1 ± 0,1 m.daN.
- Check the position of the tensioner roller.
- Remove the tools[1], [2]and [4].
- Turn the crankshaft 2 rotationsin the direction of engine rotation.
IMPERATIVE : Never turn it back.
- Peg the crankshaft, using tool [2].
- Check the roller position (24)(the alignment of the marks «c»and «d»should be correct).
- Peg the camshaft pinions, using tool [1].
- If the peg [1]goes in, loosen the camshaft pulley screws by45°.
- If the peg [1]does not go in, then loosen the camshaft pulley screws by 45°and manoeuvre the
hub using tool[5]until pegging is achieved.
- WARNING : Check that the camshaft pinion pulleys are not at the end of slots. Otherwise, restart
the operation of positioning the timing belt.
- Tighten the camshaft pinion screws to 1 ± 0,1 m.daN.
- Remove the tools [1]and [2].
- Refit the panel (20), the screws (19)and tighten to 4 ± 0, m.daN.
- Complete the refitting of all components.
B1EP15XC

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80
CHECKING AND SETTING THE VALVE TIMING
Engines : RHY - RHZ
Tools
[1]Belt tension measuring instrument : 4122-T
[2] Tension lever: (-).188.J2
[3]Engine flywheel peg: (-).188.X
[4]Belt retaining pin: (-).0188.K
[5]Camshaft pinion peg: (-).0188.M
[6]Engine flywheel lock: (-).0188.F
[7]Set of blocking plugs: (-).0188.T
[8] Crankshaft pulley extractor: (-).0188.P
Checking the setting of the valve timing.
Peg :
- The engine flywheel, using tool [3]. (From under the vehicle).
- The camshaft, using tool [5].
WARNING :On removing screws (6), (7), (9), and (5) of the timing cover, refit the
screw(5) equipped with a spacer (thickness :17 mm).
Tighten to 1,5 ± 0,1m.daN.
(The screw (5)is one of the screws fixing and sealing the water pump).
WARNING : Should it be impossible to peg the camshaft, check that the offset
between the camshaft pinion hole and the pegging hole is not more than 1 mm,
with the help of a mirror «a» and a Ø 7 mm screw.
B1BP282CB1BP1YSCB1EP152DB1EP14AC
IMPERATIVE : If pegging is impossible, restart the adjusting.
(See corresponding operation).

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81
Setting the valve timing.
Peg :
- The engine flywheel, tool [3].(From under the vehicle).
- The camshaft, tool [5].
Loosen :
- The three screws (21).
- The screw (19)of the tensioner roller (20).
- Remove the timing belt (22).
Checks.
IMPERATIVE : Just before refitting, carry out the checks below:
Check that :
- The rollers (20), (23)and the water pump turn freely (without play or tightness).
- There are no traces of oil (on camshaft or crankshaft).
- There are no leaks of coolant fluid (from water pump).
- Replace defective components (if necessary).
CHECKING AND SETTING THE VALVE TIMING
Engines : RHY - RHZ
B1EP152DB1BP282C

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82
CHECKING AND SETTING THE VALVE TIMING
Engines : RHY - RHZ
Setting the valve timing (continued).
- Retighten the screws (21)by hand.
- Turn the pinion(24)(clockwise) to the bottom of the buttonhole.
- Refit the belt on the crankshaft (25).
- Hold the belt, using tool [4].
Reposition the timing belt, keeping the belt tight at «a»,
in the following order :
- Guide roller (23).
- Fuel high pressure pump pinion (26).
- Camshaft pinion (24).
- Water pump pinion (18).
- Tensioner roller (20).
NOTE :If needed, slightly turn the pinion(24)anti-clockwise (not by
more than one tooth).
- Remove the tool [4].
B1EP154CB1EP155DB1EP153D

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83
Setting the valve timing (continued).
- Position tool[1]on the belt at «b».
- Turn the roller (20)(anti-clockwise) using tool[2]to attain a tension of :
98 ± 2 SEEM units.
- Tighten the screw of the roller (19), tighten to 2.5 m.daN.
- Remove one screw (21)from the pinion (24).
(to check that the screws are not against the end of the buttonhole).
- Tighten the screws (21) to 2.m daN.
- Remove tools [1], [2], [3]and [5].
- Rotate the crankshaft 8 times(normal direction of rotation).
- Fit the tool [3].
- Loosen screws (21).
- Fit tool [5].
- Loosen screw (19)(to free the roller).
- Fit tool [1].
- Turn the roller (20)(anti-clockwise),tool [2], to attain a tension of :
54 ± 2 SEEM units.
CHECKING AND SETTING THE VALVE TIMING
Engines : RHY - RHZ
B1EP156D

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84
Setting the valve timing (continued).
Tighten :
- The screw of the roller (19)to 2.5 ± 0.2 m.daN.
- The screws (21)to 2. ± 0.2 m.daN.
- Remove the tool [1].
- Refit the tool [1].
- Tension value should be :
54 ± 3 SEEM units.
IMPERATIVE : If value is incorrect, restart the operation
- Remove tools [1], [3] and [5].
- Rotate the crankshaft 2 times(normal direction of rotation).
- Fit the tool [3].
WARNING : Should it be impossible to peg the camshaft, check
that the offset between the camshaft pinion hole and the pegging
hole is not more than 1 mm.
In the case of an incorrect value, recommence the operation.
- Remove the tool [3].
- Complete the refitting of components.
CHECKING AND SETTING THE VALVE TIMING
Engines : RHY - RHZ
B1EP156D

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85
TOOLS
[1] Belt tension measuring instrument: 4122-T
[2] Engine flywheel peg: (-).0188.X.
[3]Tension lever: (-).0188.Y.
[4]Belt compression spring: (-).0188.K.
[5]Camshaft pinion peg: (-).0188.M.
[6] Engine flywheel lock: (-).0188.F.
[7]Set of blocking plugs: (-).0188.T.
IMPERATIVE : Respect the safety and cleanliness recommendations
specific to high pressure diesel injection (HDi) engines.
Checking the setting of the valve timing.
- Turn the crankshaft(normal direction of rotation)and line up the black
markings on the chain (b) and (c)with the teeth marked (a) and (d)of the
camshaft drive pinions (40 turns max. of the camshaft).
CHECKING AND SETTING THE VALVE TIMING
Engine : 4HX
B1EP159D

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86
Checking the setting of the valve timing (continued).
IMPERATIVE : If it is impossible to line up the marks on the chain and on the camshaft drive
pinions, restart the camshaft setting.
(See operation for removing and refitting camshafts).
- If the marks on the chains and pinions are coinciding, continue the checking operations.
Peg :
- The crankshaft, using tool [3].
- The camshaft pinion, using tool [5]
IMPERATIVE : Should it be impossible to peg the camshaft, check that the offset between the
camshaft pinion hole and the pegging hole is not more than 1 mm (use a screw 7 mm in dia.).
If the offset is more than 1 mm, restart the setting of the valve timing
(See corresponding operation).
- Remove the tools [3] and [5].
CHECKING AND SETTING THE VALVE TIMING
Engine : 4HX
B1EP15ADB1BP298C

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87
Setting the valve timing.
- Turn the crankshaft to bring camshaft to its pegging point.
- Peg the crankshaft, using tool[3].
- Peg the camshaft, using tool[5].
Untighten :
- The three screws (25).
- The screw (23)of the tensioner roller (24).
- Remove the timing belt (26).
Checks.
IMPERATIVE : just prior to refitting, carry out the checks below:
Check :
- That the rollers (24) and (27)and the water pump(22) are turning freely.
(Without play and without tightness).
- Absence of traces of oil leaks (Crankshaft and camshaft sealing rings).
- Absence of leaks of coolant fluid (Water pump).
NOTE :Replace defective components(If necessary).
CHECKING AND SETTING THE VALVE TIMING
Engine : 4HX
B1EP15ADB1BP298C