2004 Citroen C3 nfu

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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: NFU
B1BP2MBC
Engine:NFU.
Setting the timing (continued).
Remove:
The bottom plastic casing.
The engine support
(9).
The middle support.
The timing cover
(8).
Peg the flywheel, using tool
[1].
Position the tools
[3a]and [3b].
B1BP2MFCB1EP18MC
C2 C3 C3 PLURIEL

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153
CHECKING AND SETTING THE VALVE TIMING
Engine: NFU
B1EP18PC
Setting the timing (continued).
Engine:
NFU.
Slacken the tensioner roller.
Turn the tensioner roller so as to be able to position the tool
[4], with the aid of an Allen key placed at «a».
Turn the tensioner roller towards the right to bring it to the index
«c»in position «b».
Peg the tensioner roller in this position in order to slacken the timing belt to the maximum.
IMPERATIVE: Never make the dynamic tensioner roller turn by a complete rotation.
Remove the timing belt (8).
Check that the rollers
(9)and (10)turn freely (no tight spot).
B1EP18QC
C2 C3 C3 PLURIEL

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155
CHECKING AND SETTING THE VALVE TIMING
Engines: KFX KFV NFU
Setting the timing (continued).
Engines:
HFXKFV.Refitting.
NOTE:Check that the pegs [1]and [2]are in place.WARNING:Respect the direction of fitting of the timing belt, the arrows «d»indicate the direction of rotation
of the crankshaft.Refit the timing belt.
Position the timing belt, belt
«e»well tensioned, in the following order:
Crankshaft pinion, hold the belt using tool [5].
Camshaft pulley. Coolant pump pulley.
Tensioner roller.
Remove the tools
[1], [2].
Engine:NFU.Fit the timing belt in position in the following order:
Inlet camshaft pulley. Exhaust camshaft pulley.
Guide roller.
Crankshaft pulley.
Position tool
[5].
Coolant pump pulley.
Dynamic tensioner roller.
Remove the tools
[1], [3]and [5].B1EP18RC
C2 C3 C3 PLURIEL

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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: NFU
B1EP18SD
Timing belt overtensioned.
A:Engine:HFX – KFV.
B:Engine:NFU.
Turn the tensioner roller
(7)with the aid of a hexagonal spanner at «a».
Bring the index
«c»to position «f», to tension the belt to the maximum of the
interval indicated.Hold the tensioner roller
(7), using tool [4].
Tighten the fixing nut of the tensioner roller, tightening to
1 ± 0,1 m.daN.
Turn the crankshaft by
4 rotations(normal direction of rotation).
IMPERATIVE: Never make the crankshaft rotate backwards.
Make sure that the timing is correctly set by refitting the tools [1], [2]and [3].
Remove the tools
[1], [2]and [3].
C2 C3 C3 PLURIEL

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157
CHECKING AND SETTING THE VALVE TIMING
Engines: HFX KFV NFU
B1EP18TD
Adjusting the fitting tension of the timing belt.
A:Engine:HFX – KFV.
B:
Engine:NFU.
Slacken the nut while maintaining the position of the tensioner roller, with the aid of
a hexagonal spanner at
«a».
Next bring the index
«c»to its adjusting position «a».
The index
«c»should not go beyond the notch «g».
WARNING:The index«c» must not go beyond the notch«g».If it should do this,
restart the timing belt tensioning operation.
Hold the tensioner roller
(7)in this position, with the aid of a hexagonal spanner.
Tighten the tensioner roller fixing nut to :
2 ±0.2 m.daN.(HFX - KFV engines)
2.2 ± 0.2 m.daN.(NFU engine)
IMPERATIVE: The tensioner roller must not rotate during the tightening of its
fixing. If it does, restart the timing belt tensioning operation.
Complete the refitting.
C2 C3 C3 PLURIEL

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161
CHECKING AND SETTING THE VALVE TIMING
Engine: NFU
Tools.
[1]
Belt tension measuring instrument: 4122 T.
[2]Flywheel locating peg: 4507 T.A
[3]Camshaft pulley locating peg, exhaust:4533 T.A C2 Tool kit 4507 T
[4]Camshaft pulley locating peg, inlet:4533 T.A C1
[5]Tensioning tool:4707 T.J
Checking the valve timing.
Peg the flywheel using the tool [2].
Peg the exhaust camshaft pulley [3].
Peg the inlet camshaft pulley [4].
Setting the valve timing. Peg the flywheel using the tool [2].
Peg the camshaft pulleys [3] and [4].

B1EP11CCB1EP11BC
XSARA

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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: NFU
Setting the valve timing.
Loosen the screw (2), remove the belt.
Loosen the six pulley screws (1)on the hubs(there should be a slight amount of friction between the screws and the pinions).
Check that the rollers (2)and (3)rotate freely.
NOTE:The belt bears three identification marks * (a), (b)and (c), facing its own teeth (1), (52) and (72)respectively.
*
(Identification marks = white paint lines on the back of the belt facing the corresponding teeth).
Refit the belt.
Line up mark (A)on the belt with groove (D)of the pinion (4).
Hold the belt against the pinion (4).
B1EP11ECB1EP11DC
XSARA

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163
CHECKING AND SETTING THE VALVE TIMING
Engine: NFU
Setting the valve timing.
Turn the two pulleys (1)clockwise to the end of the slots.
With the belt strip (e)fully tensioned, place the belt over the pulley, first exhaust side, then inlet side, while
ensuring that marks (b)and (c)on the belt are aligned with marks (f)on the pulleys.
Hold the belt in this position, and engage it over the water pump pinion and the tensioner roller.
Fit the tool
[1]on the belt at (e).
Rotate the roller (2) (using tool [5])in an anticlockwise direction, to obtain:63 SEEM units.
Tighten the roller (2)to 2 m.daN.
Tighten the six screws (5)to 1m.daN.
ESSENTIAL: Check that:
The camshaft pulleys (1) are not at the end of the slots (by removing a screw). The markings on the belt are aligned with the markings on the crankshaft and camshaft pulleys.
If not, repeat the setting procedure.
B1EP11GCB1EP11FC
XSARA