Yale door lock

[Allsofunny]

Hi,
The Yale lock on my porch door doesnt always open easily sometimes takes 5 mins trying to turn the key. I’ve tried using wd40 but I think it needs to be replaced.
Does anyone please tell me what type of lock this is? I’ve searched Amazon but they just look really long and so not suitable for my door. Thanks in advance.
The key goes in fine but takes ages before it turns

 

[footprints]

It is a eurolock easy change just take out the screw just below the toungue, turn the key slightly till the lock pulls out. Look at eurolocks and buy one that has the same length measured from the centre some are the same length each side but some have a diferent length on inside and out. While you are at it change to an anti snap lock for better security.