Brake master cylinder of the drive, separated by sides

The brake master cylinder is connected by two studs into one unit with a two-cavity brake chamber, which is a pneumatic booster, and is mounted on a bracket on the front panel of the cabin under the hood of the car.

Brake master cylinder of the drive, divided by sides: 1 - secondary piston spring; 2 - spring holder; 3 - front cuff; 4 - piston valve; 5 - secondary piston; 6 - rear cuff; 7 - primary piston; 8 - crankcase; 9 - boot ring; 10 - rod guide; 11 - tank; 12 - tank bracket; 13 - fitting; 14 - sealing ring; 15 - thrust ring

The main causes of failure of the master brake cylinder are:

  • - wear or loss of elasticity of rubber cuffs;
  • - wear of the working surfaces of the cylinder and pistons;
  • - clogging of compensation holes.

The figure shows the installation locations of the parts and their designations according to the spare parts catalog.

fig. 2. Details of the main brake cylinder ZIL-5301 divided by sides

Look at the figure and the table shows the decoding of the part

Part number Part name

  • 100-3519339-01 - Cover
  • 118K-3502051-20 - Sealing ring
  • 118K-3505131 - Tank cover gasket
  • 220080-P29 - Screw
  • 250464-P - Welded nut
  • 307748-P - Thrust ring
  • 307749-P - Thrust ring
  • 4105-3505025 - Primary piston assembly
  • 4105-3505031 - Secondary piston spring
  • 4105-3505032 - Spring holder
  • 4105-3505035 - Front cuff
  • 4105-3505036 - Rear cuff
  • 4105-3505041 - Secondary piston
  • 4105-3505042 - Piston valve
  • 41051-3505106 - Cylinder tank mounting bracket assembly
  • 5301-3505010 - Main cylinder assembly
  • 5301-3505015 - Cylinder housing
  • 5301-3505084 - Cylinder reservoir assembly
  • 5301-3505087 - Cylinder reservoir housing
  • 5301-3505113 - Reservoir cap
  • 5301-3505117 - Reservoir nipple
  • 5301-3505160 - Brake fluid level control device assembly