Remove and disassemble the pressure regulator in the following order:
Disconnect the lines leading to the regulator.
Disconnect the regulator from the bracket (base).
Pressure regulator: 1 - piston; 2 - piston sealing ring; 3, 6 - piston spring support washers; 4 - piston spring; 5 - body; 7 - piston head seal; 8 - body bushing; 9 - pusher bushing support washer; 10 - pusher bushing; 11 - sealing ring of the pusher; 12 - support plate; 13 - pusher bushing spring; 14 - plug; 15 - plug gasket; 16 - bypass valve; 17 - plug; 18 - piston bushing; 19 - retaining ring; 20 - protective cover
Unscrew plug 14 (see Fig. 1) from the end of the housing.
Remove the protective cover 20 and the locking ring 19.
Remove piston 1 from the housing with all internal parts.
Unscrew the bypass valve 16. It is not recommended to remove the control plug 17 unless necessary.
Remove the piston from the body carefully towards the end under the protective cover so as not to damage the sealing rings.
If the piston cannot be removed freely from the body, first lightly push it from the end under the plug.
Assemble and install the regulator in the following order:
Assemble piston 1 with seal 7 (see Fig. 1).
Install housing bushing 8, assembled piston with seal, support washer 6, piston spring 4, support washer 3, sealing ring 2, piston bushing 18 and retaining ring 19 into the regulator body 5.
Install the support washer 9, sealing ring 11, pusher bushing 10, second sealing ring 11, support plate 12 and bushing spring 13 into the regulator body.
Assemble plug 14 with gasket 15 and screw it into the regulator body.
Screw bypass valve 16 into the regulator body.
Install the protective cover 20, the bypass valve cap and the control plug 17 (if it was removed).
Tightening torques:
- - plugs 14 - 43–57 Nm (4.4–5.8 kgf m);
- - valve 16 - 10–14 Nm (1.0–1.4 kgf m).
Removing and installing the pressure regulator drive
Pressure regulator drive: a - vehicles of the UAZ-31512 family; b - cars of the UAZ-3741, UAZ-Z362, UAZ-2206, UAZ-ZZ0Z family and their modifications on cars UAZ-ZZ0Z6, UAZ-39094, UAZ-Z3095, the regulator is installed on the opposite side of the frame cross member; 1 - pressure regulator; 2 - bracket (base); 3 - drive lever; 4 - adjusting bolt; 5 - elastic lever; 6, 9, and 13 - bolts; 7 - bushing; 8 - lever stand; 10 - spacer sleeve; 11 - terminal; 12 - rack bracket; 14 - lever axis
It is not recommended to remove the pressure regulator drive from the vehicle unnecessarily so as not to disrupt its adjustment.
In case of dismantling during assembly, it is necessary to maintain the installation dimensions shown in Fig. 2.
In this case, install dimension H (the position of the elastic lever 5 relative to the bracket 2) with the adjusting bolt 4 on the pressure regulator assembled with bracket 2, drive lever 3, elastic lever 5 and terminal 11 (before installation on the car).
Tightening torques:
- bolt 13 and nuts, bolts 4, 13 and axle 14 - 27–35 Nm (2.8–3.6 kgf m);
- - bolts securing the regulator to bracket 2 and bolt nuts 9 - 14–18 Nm (1.4–1.8 kgf m);
- - bolt nuts 6 - 6.4–8.0 Nm (0.65–0.8 kgf m).