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Old 12-28-2011, 10:08 AM   #1 (permalink)
Descartian
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Replacing Power Steering Pump - How Difficult?

I've has some issues since a shop replaced my steering gear box with a re-manufactured unit. Now they are saying that the PS pump needs replacing along with a leaking hose.

I have searched and see that replacing the whole Hyrdoboost assembly is a pain, how difficult is it to replace just the PS pump?


Thanks in advance,
Steve
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Old 12-28-2011, 03:07 PM   #2 (permalink)
Charlie B
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Your 05 should be the same as my 04, you need a puller to remove the power steering pump pulley, you can rent it at auto zone or advanced auto. Remove the transmission control module, I was able to just set it aside without removing all the wires, remove the top half of the fan shroud, remove the fan belt, pull the pulley off the pump, remove the bolts for the pump, disconnect the pressure and return lines. You will have to remove the pump bracket off the old pump to install it on the new one. Look good at where the pressure line is on the old pump and install the pressure line before you install the new pump, it makes life easier doing this. Once you get the pump all bolted up, you will have to press on the power steering pump pulley, you can use the old pulley if it has not spun on the pump shaft. Press it on until it is even with the end of the pump shaft , put the rest back together , add oil and give it a try. It took me about a hour and a half because I cleaned everything up real good while I was in there. hope this helps ====charlie
PS. Some rebuilt pumps companies want you to use the pressure valve out of your old pump it is where the pressure line connects to the pump, read the pump installation directions.
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Last edited by Charlie B; 12-28-2011 at 03:09 PM.
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Old 12-28-2011, 03:14 PM   #3 (permalink)
Charlie B
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It is also a good time to check things , like your idler pulley's, cleaning all the crud on the front of the motor will let it run cooler also. charlie
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Carbon Metallic-mostly stock, new injectors & FPR at 197,000 miles, 2 sets front wheel bearings, 3 sets rear u-joints, pump rub fix at 154,000 miles, front brakes & rotors 154,000 miles,2nd set injectors 284,000, now 334,698 miles and counting. 10949.8 hrs.
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Old 12-28-2011, 05:04 PM   #4 (permalink)
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Why are we changing the pump? High steering effort? Noisy?
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Old 12-29-2011, 09:06 PM   #5 (permalink)
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If you determine the p/s is the problem, changing it is an easy procedure as it was described above. Don't forget to have few towels handy since you will get some fluid spilled. Also it helps to remove as much fluid as you can from the pump before disconnecting the lines. I removed and installed the p/s pulley while I had the pump out since I'd rather not to bent over for long period of time.
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Old 12-30-2011, 08:59 PM   #6 (permalink)
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Quote:
Originally Posted by 1stdiez View Post
If you determine the p/s is the problem, changing it is an easy procedure as it was described above. Don't forget to have few towels handy since you will get some fluid spilled. Also it helps to remove as much fluid as you can from the pump before disconnecting the lines. I removed and installed the p/s pulley while I had the pump out since I'd rather not to bent over for long period of time.

You're being silly. Disconnect the pressure line and let it hang low to your drain pan. Drainage time is beer time!
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Old 01-02-2012, 01:53 PM   #7 (permalink)
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I just took my old and new PS pumps over to the GM dealer and they charged me $20 to swap the pulleys. It's just pressed on there and if you don't do it right you'll be missing both steering and brakes if it comes off. Rest of the job is pretty easy and straight forward.

I'd also install the improved steering valve (P/N 26095470) while you have it out.
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