Pic. 6-22. Pressure Regulator Actuator Details: 1 - pressure regulator; 2 - axis of the regulator drive lever; 3 - dirt cap; 4 - locking plate; 5 - bolt with spring washer; 6 - rear axle beam; 7 - rod connecting the pressure regulator drive lever with the rear axle bracket; 8 - nut of bolt 11; 9 - plastic sleeve; 10 - spacer sleeve; 11 - a bolt of fastening of draft; 12 - pressure regulator drive lever; 13 - support bushing of the drive lever; 14 - support sleeve bracket; 15 - washer, 16 - spring washer; 17 - nut, 18 - holder of the support sleeve; 19 - a bolt of fastening of a clip to an arm
Disconnect the muffler suspension parts from the body and take the pipeline with the mufflers to the side.
Having unscrewed the bolts securing the regulator to the bracket and the bracket to the body, remove the regulator bracket, and then, lowering the regulator down, disconnect the pipelines from it.
Remove the regulator and disconnect the drive lever from it. Plug the inlets and outlets of the pressure regulator and piping.
Install the pressure regulator in the reverse order of removal. Before tightening the regulator mounting bolts, install tool 67.7820.9519 on the end of the regulator drive lever (see fig. 6-7). Direct the tool rod up until it stops in the body. This sets the distance 150±5 mm (see «Adjusting the position of the pressure regulator») between the end of the lever 2 and the side member of the body
Lift up the protective cap 3 (pic. 6-22) and, turning the regulator on the fastening bolts, ensure that the end of the lever is in light contact with the regulator piston.
While holding the regulator in this position, tighten the bolts of its fastening to failure, then coat the axle 2 and the protruding part of the piston with a layer of grease DT-1 or Ditor. Reinstall the rubber cap 3, filling it with 5-6 g of the same lubricant.
Remove fixture 67.7820.9519 and connect the end of the lever with the rod 7, having previously coated with grease DT-1 or Ditor the bushings of the hinged connection of the rod with the lever.
Attach the pipes of the exhaust system to the body.
Bleed the brakes to remove air from the rear brake actuator.