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1998 Nissan Altima Question: Power steering pump pulley breaks after installation

 

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Visitor, 2.4L 4 Cylinder, Mesa, AZ, October 20, 2010, 19:13

So my power steering pump and hose were replaced along with my power steering pump pulley. The pulley was warped and I had some leaking in the pump and hose. Thats why they were replaced. Three days later a shaking sound occurs. My pulley is busted! The inner ring area is gone. We figure we had gotten a defective "new" power steering pump but are there any other possibilities like poor installation?

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  • Answer #1

    October 20, 2010, 19:34
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     Enthusiast

    Defective parts are always a possibility, especially on remanufactured-pumps..

    However I would look more towards an improper installation…
    Over or under torqueing is the most common cause for pulley failure..

    TIGHTENING SPECIFICATIONS

    Bracket: 14 - 18 Nm (10 - 13 ft. lbs.)

    Connector: 69 - 78 Nm (51 - 58 ft. lbs.)

    Connector (To Front Housing) Bolt: 49 - 69 Nm (36 - 51 ft. lbs.)

    Pulley: 54 - 68 Nm (40 - 50 ft. lbs.)

    Rear Housing: 14 - 18 Nm (10 - 13 ft. lbs.)

    Suction Pipe: 14 - 18 Nm (10 - 13 ft. lbs.)

    Also check the drive belt & drive belt tensioner for wear and binding...

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