Pic. 5.76. Power steering pump
Withdrawal
Disconnect the pressure hose from the power steering pump.
Disconnect the inlet hose from the connecting flange on the power steering pump and drain the working fluid into a suitable container.
Loosen the power steering pump mounting bolts before removing the pump drive belt.
Pic. 5.77. Bolt for adjusting the tension of the pump drive belt
Loosen the pump drive belt tension adjustment bolt (pic. 5.77).
Pic. 5.78. Removing the pump drive belt
Remove the pump drive belt from the power steering pump pulley (pic. 5.78).
Completely unscrew the power steering pump mounting bolts and the pump drive belt tension adjustment bolt.
Remove the power steering pump assembly.
Pic. 5.79. Removing the pump
Note. Be careful when removing the pump, do not spill the liquid contained in it (pic. 5.79).
Remove the power steering pump mounting bracket.
Disassembly
Remove the inlet hose connection flange and O-ring from the power steering pump.
Pic. 5.80. Bolts of fastening of a cover of the pump of the hydraulic booster
Loosen the four mounting bolts and remove the power steering pump cover (pic. 5.80).
Remove the cam washer.
Remove the rotor and blades.
Remove the side plate.
Pic. 5.81. Pump components
Remove inner and outer O-rings (pic. 5.81).
Pic. 5.82. Side plate spring
Remove the side plate spring (pic. 5.82).
Note. When assembling the pump, install a new pump cover gasket and new O-rings.
Pic. 5.83. Unscrewing the nut securing the pump pulley
Clamp the pump drive pulley in a vise, unscrew the fastening nut and remove the spring washer (pic. 5.83).
Remove the pulley from the pump drive shaft.
Pic. 5.84. Retaining ring and boot spacer
Remove the circlip using a circlip plier, then remove the boot spacer (pic. 5.84).
Pic. 5.85. Removing the pump drive shaft
With light blows of a plastic hammer from the side of the rotor, knock out the pump drive shaft (pic. 5.85).
Pic. 5.86. Extraction of an epiploon from the case of the pump of the hydraulic booster
Using a screwdriver, remove the oil seal from the power steering pump housing (pic. 5.86).
Note. Always install a new seal when reassembling the pump.
Pic. 5.87. The union of the case of the pump of the hydraulic booster
Remove the fitting from the power steering pump housing, then remove the fluid flow control valve and valve spring (pic. 5.87).
Remove the O-ring from the fitting.
Attention! Do not disassemble the fluid flow control valve.
Examination
Check free flow control valve spring length (without load).
Valve spring free length: 36.5 mm.
Check the fluid flow control valve for deformation (bending).
Check pump drive shaft for wear or damage.
Check pump drive belt for wear or deterioration.
Check absence «stepped» wear of the blades and grooves of the rotor.
Check absence «stepped» wear on the contact surface of the blades and the cam.
Check for damage to the blades.
Check for wear tracks on the side plate or contact areas between drive shaft and pump cover.
Assembly
Pic. 5.88. Components of the union of the pump of the hydraulic booster
Install the valve spring, flow control valve and fitting into the power steering pump housing (pic. 5.88).
Pic. 5.89. Installing a new oil seal
Using the special tool, install a new oil seal into the power steering pump housing (pic. 5.89).
Pic. 5.90. Installing the pump drive shaft
Insert the pump drive shaft assembly into the power steering pump housing, then install the boot spacer and circlip (pic. 5.90).
Pic. 5.91. Installing the power steering pump pulley
Install the power steering pump pulley (pic. 5.91).
Install the spring and inner O-ring.
Pic. 5.92. Installing the bottom ring gasket
Insert the outer O-ring into the side plate, then install the side plate into the power steering pump housing (pic. 5.92).
Pic. 5.93. Installing the cam
Install the locking pins into the holes in the pump casing, then install the cam washer, paying particular attention to the correct installation direction (pic. 5.93).
Install the rotor.
Pic. 5.94. Installing the Pump Rotor Vane
Install the blades so that their rounded ends are on the outside (from the side of the cam) (pic. 5.94).
Pic. 5.95. power steering pump cover
Install gasket and pump cover assembly (pic. 5.95).
Install the O-ring and the inlet hose connecting flange.
Installation
Pic. 5.96. Power steering pump installation
After installing the bracket and pump, put the drive belt on the pump pulley and adjust its tension. Tighten the tension adjustment bolt to the specified torque (pic. 5.96).
Tightening torque: 35–50 Nm.
Connect the inlet hose.
Tighten the pressure hose on the power steering pump.
Note. When installing the injection hose, make sure that it is not twisted and there is no possibility of its contact with other parts of the car.
Fill the power steering hydraulic system with the recommended PSF-3 fluid.
Bleed air from power steering hydraulic system.
Check the power steering pump pressure.