2004 Citroen C3 tightening

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ENGINE
CYLINDER HEAD
Engine: RFN
X =MAX. reusable length NOTE:
Oil the threads and
under the heads of the bolts
(use engine oil or Molykote G
Rapid Plus)
. Pretightening
: 1,5 ± 0,2
Tightening: 5 ± 0,2
Destightening: 360 ° (1 turn)
Tightening: 2 ± 0,2
Angular tightening: 285° ± 5°
B1DP16FC
A = Washer thickness:4 ± 0,2 mm.X= Length under heads of new bolts = 144,5 ±0,5 mm.
XSARA XSARA PICASSO

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ENGINE
CYLINDER HEAD
Engine: RFS
X =MAX. reusable length NOTE:
Oil the threads and
under the heads of the bolts
(use engine oil or Molykote G
Rapid Plus). Pretightening
: 3,5
Slackening:NO
Tightening:7
Angular tightening: 160°
B1DP13PC
B1DP05BC
RFS
RFS
112 mm Cylinder head tightening (m.daN) One Cylinder head bolts
XSARA

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ENGINECYLINDER HEAD
Engines: 8HX 8HW 8HZ 8HV 8HY
Cylinder head tightening (m.daN) One Cylinder head bolts
X =MAX.reusable length
Pretightening: 2 ± 0,2 m.daN
Tightening: 4 ± 0,4 m.daN
Angular tightening: 230° ± 5°
The bolts should have been tho
roughly cleaned and dried with a
dry metal brush.
Oil the threads and under the
heads of the bolts
(use engine oil
or Molykote G Rapid Plus).
Pass a tap into the holes in the
cylinder block.
8HX 8HW 8HZ 8HV 8HY
8HX 8HW 8HZ 8HV 8HY
X = 149 mm
B1DP1CLC
B1DP1DBC
NOTE:Retightening of the cylinder head
after a completed repair is prohibited.
The cylinder head gasket is dryfitted.
C2 C3 C3 PLURIEL

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ENGINECYLINDER HEAD
Engines: 9HZ 9HY
X =MAX. reusable length
Pretightening: 2 ± 0,2 m.daN
Tightening: 4 ± 0,4 m.daN
Angular tightening: 260° ± 5°
(use engine oil or
Molykote G Rapid Plus)
.
Pass a tap into the holes in the
cylinder block.
B1DP1DBC
B1DP1CLC
9HZ 9HY
9HZ 9HY
X = 147 mm Cylinder head tightening (m.daN) One Cylinder head bolts
XSARA PICASSO
NOTE:Retightening of the cylinder head
after a completed repair is prohibited.
The cylinder head gasket is dryfitted.

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ENGINE
113
XSARA XSARA PICASSO
CYLINDER HEAD (Contin ued)
Engines: WJY RHY RHZ
X =MAX. reusable length NOTE:
Oil the threads and under the heads
of the bolts (use engine oil or Molykote G
Rapid Plus).Pretightening
:2
Tightening:6
Angular tightening: 220°
Pretightening:2
Tightening:6
Angular tightening: 180°
B1DP15ECB1DP13PC
RHY RHZ
WJY
WJY RHY RHZ
125,5 mm
133,3 mm Cylinder head tightening (m.daN)
One Cylinder head bolts
WJY RHY RHZ
B1DP05BC

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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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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: KFU
B1EP1DUC
Overtensioning the belt.Position «a»Tensioner roller in slackened position.
Position «b»Tensioner roller in normal position.
Position «c» Tensioner roller in overtensioned position.
Turn the tensioner roller (8)using an allen spanner at «e».
Position the index «d»in position «c», tension the belt to the maximum indicated.
Tighten the fixing nut of the tensioner roller to 2,1 ± 0,2 m.daN.
Rotate the crankshaft by 4 turns(normal direction of rotation).IMPERATIVE: Never turn the crankshaft backwards.Make sure the timing setting is correct by refitting the pegs [1], [3]and [4].
Remove the pegs [1], [3]and [4].
Adjusting the tension of the belt.Slacken the nut, holding the position of the tensioner roller, by means of an allen spanner at
«e».
Then bring the index «d»to its adjustment position «b».WARNING:The index «d»should not go past the notch «b».If it should do so, repeat the operation to
tension the timing belt.Maintain the tensioner roller
(8)in this position, using the allen spanner.
Tighten the fixing nut of the tensioner roller to 2,1 ± 0,2 m.daN.IMPERATIVE:The tensioner roller should not turn during the tightening of its fixing.If it should do
so, repeat the operation to tension the timing belt.
Refitting.
Complete the refitting in the opposite order to removal.
B1EP1DTC
C3