Wheel cylinder parts for drum brakes
1. Case; 2. Piston head; 3. Piston; 4. Piston cuff; 5. Cylinder; 6. Air bleed nipple; 7. Cap
Wheel cylinder nipple and bolts
A. Bolts
B. Fitting
Removal
1. Remove the drums.
2. Remove the pads.
3. To reduce fluid loss, tightly close the tank cap, placing a plastic film between it, or pinch the hoses.
4. Clean the cylinder mounting bolts to the brake shield and the nipple.
5. Unscrew the nipple and plug the tube and the hole in the cylinder.
6. Loosen the bolts and remove the cylinder.
Disassembly
1. Clean dust and dirt from the cylinder by wiping it with a cloth soaked in alcohol.
2. Remove the covers.
3. Apply identification marks to the cylinders.
4. Remove the pistons and spring.
5. All cylinder seals must be replaced.
6. Check the condition of the piston and the inner surface of the cylinder.
7. If there are defects on these parts, replace the cylinder assembly.
8. Before assembly, thoroughly clean all parts, lubricate pistons, springs and seals with brake fluid.
9. Place the cuffs on the pistons.
10. Carefully insert the first piston into the cylinder, using the marks made during disassembly as a guide.
11. Install the spring and the second piston.
12. Place the boots on the cylinder, lubricating their edges with brake fluid.
Installation
1. The cylinder is installed in the reverse order.
2. Remove air from the wheel brake hydraulic drive only (if the integrity of other contours was not violated).