Press lightly on the rear cover of the pump housing and remove the retaining ring.
Remove the cover, pressure spring and sealing ring.
Remove the front cover and sealing ring and take out the rotor-stator assembly.
Check the condition of the parts, replace the rotor-stator unit if necessary. Replace the sealing rings each time the pump is disassembled.
Install the rotor-stator assembly into the pump body, install and secure the front cover, ensuring it is in the correct position (see photo).
Remove the pulley, retaining ring and press out the pump drive shaft.
Replace the sealing ring and, if necessary, the needle bearing, ensuring that it is recessed "A" (see picture), equal to 37+0.2 mm.
Check the condition of the bearing on the shaft and replace it if necessary.
Remove and wash the valve plunger and, if necessary, replace it. When replacing, install a plunger of the same size group (1 or 2), the mark of which is stamped on the pump body (see photo).
Install the pump, adjust the drive belt tension and bleed the air from the hydraulic drive (see above).
Beginning with the 1978 model year, install the power steering pump with the following in mind:
- the fastening of the discharge pipe must be done in such a way that it does not touch the engine mount bracket;
- tighten the discharge pipe fitting with tool 34-3-151 and the suction pipe fitting with tool 34-3-152.