CITROEN C4 2004 Handbook page 207

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CHECKING AND SETTING THE VALVE TIMING
Engine: RHR
Remove:
- The screw (8).
- The auxiliaries drive pulley (7).
- The crankshaft position sensor (11).
- The lower timing cover (9).
- The target of the crankshaft position sensor (10), using tool [7].
- The lower torque reaction rod.
- The tool [6].
Slacken the screw (12) of the tensioner roller (17).
Remove the timing belt (13).
Checks.
IMPERATIVE: Just before refitting, carry out the checks below.
Check:
- That the rollers (14) and (17) turn freely (without play and without
any tight spot).
That the coolant pump pulley (16) turns freely (without play and
without any tight spot).
That there are no traces of oil leaks from the crankshaft and camshaft
seals, etc.
That the crankshaft pinion travels freely on the keyway.
Replace defective components if necessary.
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