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Q: Power steering pump pulley breaks after installation on 1998 Nissan Altima

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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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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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