The above post forgot to mention to take off that crazy adjuster the 09's have on the secondary before you pull the whole unit. I used a giant adjustable wrench, but mine had so much loctite I had to put an allen key through a hole in the brake disc and jam it against the caliper. The e brake would not hold it hard enough and I was alone. You can compress the secondary when it is off with the help of a buddy pushing down on it but guys under 200 lbs make it trickier to compress enough, I think the start rate for that spring is 230 lbs compressed. My secondary spring was sacked out after 2 years so consider putting in a new one while you are at it. My secondary rollers were cracked also after two years so take a good look at yours or consider getting High Torque rollers and just throw them in too. If I were closer I could help more but good luck.