Removing
1. We prepare the car for work (see «Preparing the car for maintenance and repair»).
2. We clean the pressure regulator and the regulator drive mechanism from dirt.
3. We process the fittings of the brake pipes screwed into the regulator with penetrating grease.
4. Using a slotted screwdriver, we bend the edges of the lever lock.
5. We remove the lever from the earring.
6. Four brake pipes fit the regulator: two supply pipes (from the brake master cylinder) and two outlets (to working cylinders). On the body of the regulator there are embossed arrows indicating the connection points for the inlet and outlet pipes. To facilitate assembly, we mark the order of connecting the brake pipes to the regulator.
7. Using a special wrench, we loosen the fitting of the brake pipe suitable for the pressure regulator from the end, holding the tip of the regulator with a 21 mm open-end wrench.
8. Using a special wrench, we loosen the fittings of the three brake pipes suitable for the regulator on the side.
9. Finally unscrew the fittings with an open-end wrench of the same size.
Warning! When disconnecting the tubing from the regulator, make sure that the tubing does not rotate with the fittings. If the tubes «soured» fittings, replace them.
10. Using a 10 mm socket wrench, unscrew the two nuts securing the regulator bracket to the car body.
11. Remove the pressure regulator assembly with the bracket and elastic lever.
12. Using a 13 mm wrench, unscrew the bolt of the rear fastening of the regulator to the bracket.
13. With a key of the same size, unscrew the bolt of the front mounting of the regulator.
14. Remove the brackets and levers from the regulator.
Installation
1. We assemble and install the regulator in reverse order.
2. We connect the brake pipes in accordance with the marks applied during disassembly.
3. Tighten the pipe fittings with a special key.
4. We pump the hydraulic drive of the brake system (see «Hydraulic brake drive - pumping»).
5. We adjust the drive of the pressure regulator (see «Rear brake fluid pressure regulator - adjustment»).