eve all got a question ive rebuilt solinord on my td5 but now something is not letting the engine turn over if i use a socket on the bottom pulley going anticlockwise it will rotate ok but as soon as i try turning clockwise it will turn a bit and then becomes stuck solid any ideas why

Best to as over in the disco section of the forum
https://www.landyzone.co.uk/forum/land-rover-discovery.8/