these things are pretty easy to fit if a little bit of a fiddle. remove the door card and you will see the back end of the barrel. remove the screw holding that black bit of plastic and take off that metal bar that goes into the plastic. the barrel should drop out of the handle on the other side.
now your meant to insert the key and push the pin in to remove the plastic bit that is attached to the rear of the barrel. this may take some butchering as you dont have the key. might be worth sourcing replacement plastic bits.
push plastic bit on new barrel and insert back into door handle screw that other plastic bit back on with the metal rod attached in the orientation it came off.
think thats it. you can drill a hole in the metal plate behing the door card to gain easier access to the screw. line it up and it will make things a 100 times easier. (cheers tre
take it steady and dont wiggle the doors around too much... i found out the hard way and all the metal rods which link the locking mech together fell out! there are loads of em'
90 or 110? it should take you, 1st time around 45min/door.
hope this helps.
Ps. door barrels are cheaper on ebay and prob the same as paddocks. make sure you get the newer type barrels or they may not fit.