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Replace a Spare part Power Steering Pump – a defective one or if the limit of use has been already reached. Find out useful information about Power Steering Pump

Servo pump or secondary air injection system begins to work when starting a cold engine. Within a few minutes it pumps air into the exhaust tract behind the exhaust valves. Thus, the exhaust gases are oxygenated, afterburning, which accelerates the heating of the catalytic converter, is run. The engine control unit controls the system through the auxiliary pump relay, secondary air injection control valve or switching valve or secondary air injection combined valve.

During the next start-up of the engine idling, the secondary air injection system turns on and the engine behaviour is under the control of the self-test system. The regulation of the oxygen sensor should be on. In general, the main task of the servo pump is enrichment of emissions with oxygen, promotion of afterburning of exhaust gases and catalyst warming. At the same time, motorists should know that failure of the pump may not affect the operation of the motor.

If you hear work of the secondary air system pump when starting the engine, most likely the problem is that the pump bearings are dry. Still, if it completely fails, you will see Check engine inscription on the dash panel. The most common failure of servo pumps is jamming. Usually, the reason for this is the fact that this detail works some time and the mechanism that works rarely often jams. In this case it is rational to dismantle the servo pump, to clean and lubricate it.

Whatever happened to the parts in your car, always remember that the cheapest spare car parts are available in the online store, but not in garages. Moreover, all the car parts, including ball joint, toothed wheel, ordered in our online store, are quickly delivered. Within a few working days you will be able to replace worn parts with new.

Power Steering Pump for SKODA FELICIA I Fun (797), VW TRANSPORTER V Box (7HA, 7HH, 7EA, 7EH), MERCEDES-BENZ SPRINTER 5-t Box (906)

Faults of the auxiliary power steering pump
  • fluid leakage in the power steering pump;
  • mechanical damage to the part;
  • normal wear and tear;
  • faulty fixtures.
Symptoms of auxiliary pump failures
  • low pressure level in the steering;
  • creaking of the power steering pump when cornering;
  • excessively tight turns of the steering wheel;
  • vibration of the steering wheel;
  • uneven steering effort in different directions;
  • incorrect operation of the steering system;
  • an increased noise level when cornering;
  • whistling in the system when reversing the steering wheel to lock.
Causes of auxiliary pump faults
  • wear or damage to the pump belt drive;
  • air in the system;
  • insufficient idle speed;
  • insufficient amount of fluid in the system;
  • incorrect connection of the steering;
  • uneven tire wear.

First of all, check the amount of fluid in the system. In case of low fluid level, you need to add it. If the fluid has to be refilled frequently, you need to check the connections and the pump itself for leaks.

Next, check the pump condition and operability. The best option is to connect a known good spare part. Be sure to check the integrity of pump hoses and their connection points to the pump.

Repair and replacement of the auxiliary pump

If you suspect the air presence in the system, it requires pumping. In case of dirt in the system, a complete flushing of the pump is needed. However, there is a possibility of the pump failure even after flushing.

To replace the pump, you must first remove the accessory drive belt and loosen the clamp. Next push the clamp along the hose and disconnect the hose from the pipe. Be prepared to drain the fluid in a specially prepared container. Then unscrew the fitting bolt and remove the pressure hose.

For more convenience, it is recommended to remove fluid using a syringe from the pump itself and detach it.

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