Removing
1. Remove the auxiliary drive belt.
2. To fix the engine crankshaft from turning, the assistant must engage fourth gear and press the foot brake all the way or remove the starter and fix the flywheel ring gear (the tool for fixing the toothed flywheel is indicated by the arrow). At this time, loosen the crankshaft pulley bolt. The pulley bolt should always be new.
3. Unscrew the bolt and remove the pulley from the crankshaft. If the pulley has a slip fit on the crankshaft using a key or pin, remove them. If the pulley is pressed onto the crankshaft, remove it with a puller.
Installation
1. Install the keyway into the groove of the crankshaft and install the pulley on the crankshaft, aligning the groove on the pulley with the keyway.
2. Clean the threads of the pulley bolt and coat with an anti-threading agent (Peugeot recommends Loctite Frenetanche).
3. Screw in the bolt with the washer of the pulley.
4. Install and adjust the tension of the auxiliary drive belt.