Cylinders change only in couple on an axis, it is forbidden to change them separately.
Removal and installation
PERFORMANCE ORDER
1. Remove drums and blocks.
2. Unscrew the hydraulic actuator tube union, muffle a tube and an opening in the cylinder (And – the brake tube union, In – bolts of the wheel cylinder).
3. Turn off bolts and remove the cylinder.
4. Installation is carried out upside-down. Pump over a hydraulic actuator of brakes and remove air.