2000 Citroen C5 belt

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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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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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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

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CHECKING AND SETTING THE VALVE TIMING
Engine : 4HX
Setting the valve timing (continued).
Refit
- Retighten the screws (25) by hand.
- Turn the pinion (29)(clockwise)to the bottom of the buttonhole.
- Refit the belt on the crankshaft (28).
- Hold the belt, using tool[4].
- Reposition the timing belt, keeping the belt tight at «a», in the following order :
- Guide roller (27).
- Fuel high pressure pump pinion (30).
- Camshaft pinion (29).
- Water pump pinion (22).
- Tensioner roller (24).
NOTE : If needed, slightly turn the pinion (29)anti-clockwise(not by more
than one tooth).
- Remove the tool [4].
B1EP15CCB1EP15DDB1EP15BD

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Setting the valve timing (continued)
- Position tool [1]on the belt at«b».
- Turn the tensioner roller (24) (anti-clockwise)using tool [2]to attain a tension of :
106 SEEM units.
- Tighten screw (23) of the tensioner roller, tighten to 2.5 m.daN.
- Remove one screw (25) from the pinion (29).
(to check that the screws are not against the end of the buttonhole).
- Tighten the screws(25)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 (25).
- Fit tool [5].
- Loosen screw (23)(to free the tensioner roller (24).
- Fit tool[1].
- Turn the tensioner roller(24)(anti-clockwise),using tool[2], to attain a tension of :
51 SEEM units.
- Tighten :
- The screw (23) of the tensioner roller(24)to 2.5 ± 0.2 m.daN.
- The screws(25)to 2 ± 0.2 m.daN.
CHECKING AND SETTING THE VALVE TIMING
Engine : 4HX
B1EP15ED

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Component (diagr.) Supplier Reference Observations
Recommended fuelDiesel
Fuel temperature sensor5ELTHOn the injection rail
Fuel high pressure sensor6BOSCHD281022093 On the injection rail
Fuel tank15Capacity = 68 litres.
Composition : Polyethylene.
Fuel pump16VDOElectric pump immersed in the tank. Voltage 12V.
Pressure : 7 Bars.
Fuel filter
17BOSCH0450907Fixing : on the engine.
Low pressure regulator Adjustment : 2,5 bars.
Fuel cooler18LON Fixed under the bodyshell.
Fuel heater19Integral with the coolant outlet housing.
Fuel high pressure pump20BOSCHCPThe fuel high pressure pump is driven by
the timing belt
Fuel high pressure injection
common rail21BOSCH86313 On the engine (18 cc).
Fuel circuit

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Fuel circuit
Component (diagr.) Supplier Reference Observations
Recommended fuel Diesel
Fuel tank16Capacity = 65 Litres – Polyethylene.
Fuel tank17VDOElectric pump immersed in the tank.
Voltage: 12 volts – Pressure : 2 Bars
Fuel filter
18BOSCH0450907Fixing : on the engine.
Low pressure regulator Adjustment : 2,5 Bars
Fuel cooler19NOBEL
PLASTIQUEFixed under the bodyshell.
Fuel high pressure pump21BOSCHCP1The high pressure pump is driven by the timing
belt.
Diesel injectors23BOSCH9625542580
Fuel high pressure regulator31BOSCHFixed on the fuel high pressure pump.
Fuel high pressure pump 3rd piston
deactivator32BOSCHFixed on the fuel high pressure pump.
Fuel high pressure injection
common rail22BOSCH86313 On the engine (18 cc)
Fuel high pressure sensor7BOSCHD281022093 On the injection rail
Fuel temperature sensor6ELTHOn the injection rail
Fuel heater20Integral with the coolant outlet housing.

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Fuel circuit (continued)
Component (diagr.) Supplier Reference Observations
Fuel heater45Integral with the coolant outlet housing.
Fuel high pressure pump67BOSCHThe fuel high pressure pump is driven by
the timing belt
Fuel high pressure common
injection rail63BOSCHOn the engine (18 cc).
Reference 1 on injector-carrier (Class 1 injector)
Reference 2 on injector-carrier (Class 2 injector)
Diesel injector69BOSCH963727798 Reference 3 on injector-carrier (Class 3 injector)
When changing a diesel injector-carrier, order a
component of the same class.
Fuel high pressure regulator66BOSCHFixed on the fuel high pressure pump.
Fuel high pressure pump 3rd piston
deactivator68BOSCHFixed on the fuel high pressure pump.