CITROEN C4 2004 Handbook page 165

CHECKING AND SETTING THE VALVE TIMING
Engine: KFU
Overtension on the belt.
Position «a»: Tensioner roller in detensioned position.
Position «b»: Tensioner roller in normal position.
Position «c»: Tensioner roller in overtension position.
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].
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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.
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