Removal and installation
Disconnect the flexible hoses from the master cylinder and close the hose openings and fittings on the cylinder to prevent brake fluid from leaking from the reservoir and dirt from getting into the cylinder. Disconnect the pipes from the master cylinder that supply fluid to the wheel cylinders of the front and rear brake mechanisms and remove the cylinder.
Install the master cylinder in the reverse order. After installing the cylinder, bleed the brake hydraulic system to remove air from it.
Disassembly and assembly
Remove the fittings with sealing gaskets (if necessary) and protective cap, unscrew the set screws 6 (see fig. 194) and remove all parts from the cylinder.
The cylinder is assembled in the reverse order, lubricating all parts with brake fluid.
Checking the details
Before assembly, wash all parts with brake fluid, dry with a stream of compressed air and wipe with a clean cloth, avoiding contact with mineral oils, kerosene and diesel fuel, which cause swelling of the sealing rings. The cylinder mirror and the working surface of the pistons must be completely clean, without rust, scratches and other defects.
(The information can be read on the website VAZBOOK.RU)
When disassembling the cylinder, replace the sealing rings with new ones, even if they appear to be in good condition. Check the condition of the protective cap and replace it if damaged.
Check the elasticity of the piston spring. The length of the spring in a free state should be 57.5 mm, under a load of 3.5-4.2 kgf = 36 mm and under a load of 6.35-7.35 kgf = 21 mm.