Press out the centering sleeve 3 and the collar 4 using the Kukko 22-1 puller. Remove the collar 4, centering sleeve 3, support washer 2 and spring 1 in sequence.
Clean the parts, check their condition, replace defective parts.
When assembling, lubricate the spring, thrust washer and collar with a long-life grease such as Molykote Longterm 2.