M.dan Citroen C4 2005 2.G Workshop Manual

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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: KFW - NFV
Pre-tensioning the timing belt (continued).
Make sure of the timing setting by refitting the pegs [1]and [2].
Remove the valve cover.
Position the tool [5]
(respect the direction of fitting relative to the valve timing).
Adjusting the belt tension.
Place tool [4]on the tensioned part of the belt.
Slacken the nut (2).
Detension the belt, but too much.
Tension the timing belt to obtain a value of: 31 ± 2 SEEMunits.
Tighten the nut (2)to 2 m.daN.
Remove tools [1], [2], [4] and [5].
Checking the belt tension.
Rotate the crankshaft 2 turnsin the normal direction of rotation.
Check that it is still possible to peg the following components.
Flywheel.
Camshaft.
IMPERATIVE: Repeat the belt tensioning operation if the pegging is not possible.
XSARA - XSARA PICASSO
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: KFU
Overtension on the belt.
Position «a»: Tensioner roller in detensionedposition.
Position «b»: Tensioner roller in normalposition.
Position «c»: Tensioner roller in overtensionposition.
Turn the tensioner roller (10), using an allen spanner at «e».
Place the index «d»in position «c», hold the belt to the maximum of the interval indicated.
Tighten the tensioner roller fixing nut to 2,1 ± 0,2 m.daN.
Rotate the crankshaft four turns
(normal direction of rotation).
IMPERATIVE: Never turn it backwards.
Check the timing setting by refitting the pegs [1], [2] and [3].
Remove the pegs [1], [2]and [3].
Adjusting the fitting tension of the timing belt.
Slacken the nut, holding the position of the tensioner roller, using an allen spanner at «e».
Bring the index «d»to its adjustment position at «b».
WARNING: The index «d» should not go past the notch «b». If it does, repeat the operation
to tension the timing belt.
Maintain the roller (10)in this position, using an allen spanner.
Tighten the tensioner roller fixing nut to 2,1 ± 0,2 m.daN.
IMPERATIVE: The tensioner roller should not turn during the tightening of its fixing. If it
does, repeat the operation to tension the timing belt.
Complete the refitting.
B1EP1DTC
B1EP1DUC
C4
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ENGINE
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 anti-clockwise direction, to obtain: 63 SEEMunits.
Tighten the roller (2)to 2 m.daN.
Tighten the six screws (5)to 1 m.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.
B1EP11GC
B1EP11FC
XSARA
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: NFU
Setting the valve timing.
Remove the tools [1], [2], [3]and [4].
Rotate the engine by four turnsin the normal direction
(do not turn backwards).
Peg the flywheel [2].
Loosen the six screws (5), while ensuring there is still a slight amount of friction with the pulley.
Peg the camshaft hubs using pegs [3]and [4].
WARNING: In certain cases, it may be necessary to slightly turn the camshaft using the hub fixing screw.
Fit the tool [1].
Loosen the tensioner roller screw (2).
Rotate the roller (2)
(using tool [5])in an anti-clockwise direction to obtain: 37 SEEMunits.
Tighten the tensioner roller screw (2)to 2 m.daN.
Tighten the six pulley screws (1)to 1 m.daN.
Remove the tools.
XSARA
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engine: NFU
Refitting.
Fit the
(new)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 tools [1], [2a], [2b]and [4].
Overtension on the belt.
Turn the tensioner roller (7)with the aid of a hexagonal spanner at «a».
Bring the index «c»to position «d», to tension the belt to the maximum of the interval indicated.
Hold the tensioner roller, using tool [4].
Tighten the fixing nut of the tensioner roller, tightening to 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 pegs [1], [2a]and [2b].
Remove the pegs [1], [2a], [2b]and[4].
B1EP1DPC
C4
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: NFU
Adjusting the fitting tension of the timing belt.
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 «e».
WARNING: The index «c» must not go beyond the notch «e». If it should do this, restart the
timing belt tensioning operation.
Hold the tensioner roller in this position with the aid of a hexagonal spanner.
Tighten the tensioner roller fixing nut to 2.2 ± 0.2 m.daN.
IMPERATIVE: The tensioner roller must not rotate during the tightening of its fixing. If it
does, restart the timing belt tensioning operation.
Refitting.
Refit the timing covers, the crankshaft pulley, the auxiliaries drive belt
(see corresponding operation).
Complete the refitting.
IMPERATIVE: Carry out the operations that are necessary following a reconnection of the
battery
(see corresponding operation).
B1EP1HHC
C4
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engine: RFJ
Checking and setting the timing (continued).
Refitting.
Turn the tensioner roller (9), using tool [5a]to go past the notch «b».
Position the tool [5b] to lock the index «a»and remove the tool [5a].
NOTE: Check the presence of the crankshaft pinion keyway (12)before positioning the timing belt.
Reposition the timing belt (8)on the crankshaft pinion (1).
Hold the timing belt in place (8)using tool [3].
Put the timing belt (8)in place, in the following sequence:
- Guide roller (11).
- Inlet camshaft pulley (7).
- Exhaust camshaft pulley (6).
- Coolant pump (13).
- Tensioner roller (9).
NOTE: Make sure that the timing belt (8)is as flush as possible with the outer faces of the various
pinions and rollers.
Remove tools[3], [1]and [5b].
Refit the lower timing cover (5), the pulley (2)and the screw (3)of the crankshaft pulley.
Tighten the screw (3)to 4 ± 0,4 m.daN.
Angular tighten 40°±4°, using tool [4].
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B1EP1G3C
C4
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: RFJ
Tensioning the timing belt.
Refitting (continued).
Turn the tensioner roller (9)anti-clockwise, using a hexagonal spanner at «c».
Place the index «a»in position «e».
IMPERATIVE: The index «a» should go past the slot «f» by an angular value of 10°.
If it does not, replace the tensioner roller or the tensioner roller and timing belt assembly.
Then bring the index «a»to its adjustment position «f», by turning the tensioner roller in the direction of
the arrow «d».
WARNING: The index «a» must not go past the slot «f».
If it does, restart the operation to tension the timing belt.
IMPERATIVE: The tensioner roller must not turn during the tightening of its fixing.
If it does turn, restart the operation to tension the timing belt.
Tighten the screw (10)of the tensioner roller (9)to 2,1 ± 0,2 m.daN.
IMPERATIVE: The hexagonal tensioner roller drive should be at approx. 15° below the level
of the cylinder head gasket «g».
Otherwise, replace the tensioner roller or the tensioner roller and timing belt assembly.
B1EP1G4C
B1EP1G5C
C4
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: RFN
Checking and setting the timing (continued).
Refitting.
Turn the tensioner roller (9), using tool [5a]to go past the notch «b».
Position the tool [5b]to lock the index «a»and remove the tool [5a].
Reposition the timing belt (10)on the crankshaft pinion (1).
Hold the timing belt in place (10)using tool [3].
Put the timing belt (10)in place, in the following sequence:
- Guide roller (12).
- Inlet camshaft pulley (7).
- Exhaust camshaft pulley (6).
- Coolant pump (11).
- Tensioner roller (9).
NOTE: Make sure that the timing belt (10)is as flush as possible with the outer faces of the
various pinions and rollers.
Remove tools [3], [1]and [5b].
Refit the lower timing cover (5), the pulley (2)and the screw (3)of the crankshaft pulley.
Tighten the screw (3)to 4 ± 0,4 m.daN.
Angular tighten 53°±4°, using tool [4].
B1EP1G9D
B1EP1GAC
C4
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engine: RFN
Tensioning the timing belt.
Refitting (continued).
Turn the tensioner roller (9)in the direction of the arrow «c», using a hexagonal spanner at «d».
Place the index «a»in position «f».
IMPERATIVE: The index «a» should go past the slot «g» by an angular value of 10°.
If it does not, replace the tensioner roller or the tensioner roller and timing belt assembly.
Then bring the index «a»to its adjustment position «g», by turning the tensioner roller in the direction of
the arrow «e».
WARNING: The index «a» must not go past the slot «g».
If it does, restart the operation to tension the timing belt.
IMPERATIVE: The tensioner roller must not turn during the tightening of its fixing.
If it does turn, restart the operation to tension the timing belt.
Tighten the screw (8)of the tensioner roller (9)to 2,1 ± 0,2 m.daN.
IMPERATIVE: The hexagonal tensioner roller drive should be at approx. 15° below the level of
the cylinder head gasket «h».
Otherwise, replace the tensioner roller or the tensioner roller and timing belt assembly.
B1EP1GBC
B1EP1GCC
C4
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