Have you ever tore a motor apart? If You haven,t. Get a motor manual for your particular make. The timeing chain is located at the fron of the engine and cover buy a timeing chain cover. You have to take the radiator shroud,radiator,radiator hoses,unhook the belts,and cover off. Then you will see you chain. When you replace the chain with a new one. You will also want to replace the gears and bolts that hold them on. When you put it back on. Torgue all your bolts to the bookand line the timeing marks of what the book says. It will take you about a day to do the job.Its not hard.When you take the radiator out and back in--be careful you DO NOT bump a hole in it.