Question about 1997 Isuzu Trooper
How is the pressed steel twin pulley secured to the steering pump shaft ?
It's pressed on. There is a keyway in the pump shaft, and the pulley also. You MAY be able to rent a tool from an auto parts house, don't quote me on this, though. Any decent machine shop should be able to press off the old pulley, and press it on the new pump for you.
Posted on May 10, 2009
Alot of times they are pressed on requires a special removal tool
Posted on May 10, 2009
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Posted on Jan 02, 2017
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Jan 27, 2016 | Chevrolet Cars & Trucks
Aug 22, 2014 | Cars & Trucks
Fig. 2: Installing the pilot bolt
Fig. 3: Removing the power steering pump pulley
Fig. 4: Installing the power steering pump pulley
Feb 08, 2012 | 1996 Chevrolet Blazer
Lift the hood. Remove the power-steering cap. Use the turkey baster to siphon as much fluid as possible from the power-steering pump reservoir. This is done to lessen the fluid loss when the hoses are removed.
Remove the two pressure hoses from the rear of the power-steering pump, using a wrench and common screwdriver. The high-pressure hose is threaded into the back of the pump while the lower-pressure hose is held on with a clamp.
Loosen the belt tensioner by using a wrench to move the tensioner away from the belt and removing the belt.
Place the power-steering pulley extractor tool on the nose of the pulley. The tool has two half shells that clamp around the lip on the nose of the pulley and around the lip of the tool. Thread the tool in until the shells fit on both the pulley and the tool lip. Install the circular metal band to keep the shells in place. Hold the threaded head of the tool with a wrench. With another appropriately sized wrench, turn the large nut above the shells counterclockwise to pull the pulley off.
Remove the bolts securing the pump to the support bracket. Remove the pump.
Install the new pump. Insert the securing bolts and tighten. Install the pulley by holding the pulley on the shaft while threading the extractor tool into the center hole of the shaft, with the shells removed. Hold the head of the threaded shaft with one wrench and turn the large nut clockwise with another wrench to push the pulley on the power-steering pump shaft.
Install the serpentine belt by pushing the tensioner away from the belt while wrapping the belt around the pulleys. Allow the tensioner to press on the belt, causing tension.
Install the two power-steering hoses. Fill the power-steering pump reservoir with power-steering fluid. Start the truck and turn the steering wheel lock-to-lock, left and right several times to bleed all the air from the system. Check the fluid one more time.
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On models equipped with a remote fluid reservoir, disconnect and plug the hose(s) in order to prevent system contamination or excessive fluid loss.
When installing the puller tool onto the power steering pump pulley, be sure that the pilot bolt bottoms in the pump shaft by turning the head of the pilot bolt.
Installing the pilot bolt
Removing the power steering pump pulley
Installing the power steering pump pulley
When positioning the installer tool onto the power steering pump pulley, be sure that the pilot bolt bottoms in the pump shaft by turning the head of the pilot bolt.
Properly install the drive belt and, if applicable, adjust the tension.
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