BENDIX SD-30-4250 manual Pressure Relief Bypass Valve Disassembly

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FIGURE 26

17.Remove the inner O-ring(17) and the nylon seal ring(18) from the valve body(16).

NOTE: Do not remove the inner ball race(28) from the valve body(16) if it is in good condition.

18.Then remove the dust seal(13), snap ring(14) and the seal(15) from the valve body(16). (See Figures 7 & 26)

PRESSURE RELIEF BYPASS VALVE DISASSEMBLY

19.The power steering valve body(16) contains a pressure relief and safety valve.

Loosen and remove the plug(3) with a 26mm wrench and the corresponding seal washer(4).

CAUTION: Located in the plug are the corresponding maximum pressure adjusting shims(5). (See Figure 27 & 28) Proper reinstallation of the shims is critical to maintain correct relief pressure.

Remove the spring(6), the guide(7) and the valve(8). With a wide blade screwdriver loosen and remove the valve seat(9) and its copper seal washer(10) as well as the spring(11) and the ball(12) of the bypass valve.

NOTE: Be careful not to damage the I.D. of the valve body or the valve seat(9) with the screwdriver.

 

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FIGURE 27

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Contents II. Operation Mechanical OperationGeneral Table of Contents III Technical Data Preventive MaintenanceHydraulic Operation Delivery from III. Technical Data Power Steering Gear IdentificationIV. Preventive Maintenance Power Steering OILDraining and Filling the System IMPORTANT! Please Read VI. Removing the Power Steering GearOutput Shaft Sector Teeth Adjustment Output Shaft Boot SealOutput Shaft Removal VII. Special Tool Requirements10 11 Page Page Piston Removal & Disassembly Housing Disassembly Valve Body and Spindle Disassembly Side Cover DisassemblyPressure Relief Bypass Valve Disassembly Inspection Output Shaft DisassemblyIX. Reassembling the Power Steering Unit Spindle Disassembly Cleaning and InspectionValve Body Refer to Figure Spindle AssemblyPiston Assembly Housing Assembly 26 25 24 Housing & Valve Body Assembly Page System Back Pressure Check Adjusting the Piston Sector Tooth BacklashRelief Pressure Test Power Steering Pump PRESSURE, Flow and Leakage TestsThermometer Preliminary Checks XI. TroubleshootingSymptom Troubleshooting Chart CauseRemedy Cause