K 3500 Truck 4WD V8-5.7L VIN R (1998)
6. Position a C-clamp and tighten it until the piston bottoms in the bore.
7. Remove the C-clamp.
8. Remove the brake hose.
9. Remove the bolt (2).
10. Remove the support key (3) and the spring (4).
11. Drive the support key using a brass punch and a hammer.