2005 Citroen C4 Timing marks

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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).
B1EP11EC
B1EP11DC
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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
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: 9HX - 9HY - 9HZ
Adjusting the timing belt tension.
Act on the tensioner roller (18)to align the marks «j»and «h», avoiding detensioning the timing belt,
using an allen spanner at «d».
Should this fail, repeat the operation to tension the timing belt.
Hold the tensioner roller (18).
Tighten the tensioner roller fixing nut to 3,7 ± 0,3 m.daN.
Check the position of the tensioner roller
(the alignment of the marks «j» and «h»should be correct).
Remove tools [2]and [3].
Rotate the crankshaft six times
(clockwise).
IMPERATIVE: Never rotate the engine backwards.
WARNING: Do not touch or damage the track of the target of the engine speed sensor (14).
Peg the crankshaft, using tool [3].
Check the position of the tensioner roller
(the alignment of the marks «j»and «h»should be correct).
If this is not the case, repeat the operation to tension the timing belt.
Peg the camshaft pulley, using tool [2].
B1EP1HNC
C4
Angl.-t2-page240-282-2005 9/01/06 10:16 Page 247

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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: 9HZ - 9HY
B1EP1E8C
Adjusting the timing belt tension.
Act on the tensioner roller (18)to align the marks «g»and «h», avoiding detensioning the
timing belt, using an allen spanner at «d».
Should this fail, repeat the operation to tension the timing belt.
Hold the tensioner roller (18).
Tighten the tensioner roller fixing nut to 3,7 ± 0,3 m.daN.
Check the position of the tensioner roller
(the alignment of the marks «g»and «h»should
be correct).
Remove tools [2] and [3].
Rotate the crankshaft six times
(clockwise).
IMPERATIVE: Never rotate the engine backwards.
WARNING: Do not touch or damage the track of the target of the engine speed sensor
(14).
Peg the crankshaft, using tool[3].
Check the position of the tensioner roller
(the alignment of the marks «g» and «h»should
be correct).
If this is not the case, repeat the operation to tension the timing belt.
Peg the camshaft pulley, using tool [2].
IMPERATIVE: Should it be impossible to peg the camshaft, check that the offset
between the camshaft hole and the pegging hole is not more than 1 mm. If the offset
is too great, repeat the operation.
Remove tools [2] and [3].
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