Timing chain and sprockets — inspection and maintenance (Peugeot 305)

1. Inspect the teeth of both sprockets for wear. The tooth is shaped like an inverted "V" and as it wears, one side of the tooth becomes more concave than the other. Severely worn teeth take on a hook-shaped form, in which case the sprocket must be replaced.

2. If the sprocket is heavily worn, the chain will most likely be worn as well and should be replaced. If the sprocket is in good condition, inspect the chain and check the play between its sprocket. If you hold the chain horizontally so that the connecting pins do not bend noticeably. The more the chain deflects, the more worn it is. In any case, it is recommended to replace the chain after overhauling the engine.

3. Inspect the chain tensioner plate for grooves. If there are obvious defects, the plate should be replaced. It is recommended not to disassemble the tensioner, as its assembly is associated with certain difficulties.

(Original is contained on the portal: Peugeotbook.ru)