5.2.23. Check of the pump of the hydraulic booster of steering

Fig. 5.83. Surfaces of friction of the case and shaft of the pump

Check a condition of surfaces of friction of each detail. At detection of aberrations replace the pump assembled (fig. 5.83).

Fig. 5.84. Surface of friction of a cam ring

Check the surface of friction of blades of a cam ring for existence of wear and damages. At detection of aberrations replace the pump assembled (fig. 5.84).

Fig. 5.85. Surface of friction of a rotor and blades

Check the surfaces of friction of a rotor and blades for existence of wear and damages (fig. 5.85).

Fig. 5.86. Check of a gap between a rotor and the blade: 1 – probe

Check a gap between a rotor and the blade (fig. 5.86).

Gap between a rotor and the blade.

Nominal rate: 0,01 mm.

Extreme value: 0,06 mm.

Replace the pump assembled if there is an aberration.

Check the channel of the safety valve and an opening of the socket for existence of a contamination.

Fig. 5.87. Check of the safety valve

Check a condition of a surface of friction of the safety valve (fig. 5.87).

Fig. 5.88. Check of length of a spring of the safety valve in a free state

Check length of a spring of the safety valve in a free condition of 1 (fig. 5.88).

Length of a spring of the safety valve in a free state.

Nominal rate: 22,0 mm.

Extreme value: 19,0 mm.

Replace the pump assembled if there is an aberration.