How to remove and install the power steering pump on Mercedes-Benz C350?

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Disconnect the cable from the negative battery terminal. On V6 engine models, remove the left air intake duct. Remove the drivebelt by rotating the auto-tensioner counterclockwise and locking it into position; it is not necessary to lock the auto-tensioner on four-cylinder engine models. Using a large syringe or suction gun, extract as much fluid as possible from the power fluid reservoir. Position a drain pan under the power steering pump, detach the pressure line fitting and the supply hose at the reservoir, and plug the openings to prevent excessive fluid loss and contamination. For V6 engine models from 2006 and later, use a long hooked tool to pull the circlip from the fitting on the rear of the reservoir, ensuring to attach a magnetic pick-up tool to prevent losing the clip. Remove the three mounting bolts for the reservoir and take it off the pump, discarding the seal. Disconnect the electrical connector from the pump next to the pipe for the reservoir, remove the air conditioning compressor, detach the ground cable from the back of the pump, and remove the mounting bolt near the bottom. Remove the two front mounting bolts from the left side of the pump and carefully take it out. For 2005 and earlier models, remove the bolt securing the reservoir to the engine bracket, detach the ground wire from the rear of the pump, and remove the mounting bolts on the front and rear of the pump, noting that the rear bolts are longer. Slide the pump and reservoir forward from the engine, avoiding any power steering fluid drips on the vehicle's paint, and remove the reservoir from the pump by taking off the circlip from the pipe fitting and discarding the seal. For four-cylinder engine models, remove the alternator wire harness from the pump's heat shield, take out the eight screws securing the heat shield to the pump, and then remove it. Remove the mounting bolts located on the front and rear of the pump, and carefully take out the pump. The pulley can be removed from the pump if necessary, with special tools available at most auto parts stores. Installation is the reverse of removal; ensure to tighten the mounting bolts and pressure line fitting to the specified torque values, use a new hose clamp on the supply hose at the reservoir, and a new seal when installing the reservoir onto the pump. Use new sealing washers on the pressure line fitting, fill the power steering reservoir with the recommended fluid, and bleed the system, then re-check the power steering fluid level.

Genuine Mercedes-Benz C350 Power Steering Pump

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Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump

Mercedes-Benz C350 Power Steering Pump Parts and Q&A

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