Vacum pump locked up
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More Turbo
Joined: Dec 2003
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Vacum pump locked up
So the vacum pump locked up and threw the belt on our 7.3idi.I ordered a pump but wondered if anybody has changed one.It looks like I'll need a puller for the pulley.Any suggestions,advice or instructions?
Senior User
Joined: Feb 2009
Posts: 372
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From: Westfield, MA
Your right, you will need a puller for the pulley. You can rent one from most auto parts places. I got mine from O'Reillys. You will need to take the pulley off to get to the bolts that mount the pump, your new pump won't come with a pulley so be careful not to damage your old one, it takes a special puller, if I remember right its the same type used to remove power steering pump pulleys.
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
I tried my handy dandy snap on power steering puller and it wont work.
Most parts houses will pull the pulley and install the new one for a few bucks more.
I don't know what year you have but if it has v belts you can remove it with the pulley on it.
Most parts houses will pull the pulley and install the new one for a few bucks more.
I don't know what year you have but if it has v belts you can remove it with the pulley on it.
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
Quick and easy write up, though on a P/S pump it's the same idea:
The power steering pulley is held on the the pump shaft with friction, a simple press fit. To remove the pulley from the shaft, a puller is used. A conventional 3 or 4 jaw puller would not work as it would most likely distort/bend the pulley and cause a wobble which would result in belt wear.
The puller consists of three basic parts, a split collar (left), the threaded puller assembly (center), and the collar retaining ring (right). Depending on the manufacturer, the parts may vary slightly, but they are all pretty much the same.
Pulley remove starts by inserting the shaft of the threaded puller into the hole of the pump shaft. The shaft on my puller has a greased ball bearing at the end of it to allow easier turning of the puller.
After the threaded puller is in position, slide the two collars around the shoulder of the pulley shaft. The collars are sized for two different shaft diameters. Pick the one that most closely matches the pulley.
Slide the collar retaining ring over the two collar halves. This will keep them from separating under tension once you apply some muscle to the puller. Hold the lower part of the threaded assembly and screw the upper section into the pulley until you feel resistance. At this point, the puller's shaft is bottomed out in the hole in the pump shaft.
Place a wrench on the lower portion of the threaded puller assembly and a ratchet at the top of the threaded shaft. Screw the threaded puller assembly into the lower portion, tightening the nut/bolt parts so to speak. As you do, the puller will slowly slide the pulley off of the pump shaft.
Once the puller has extracted the pulley from the pump shaft, remove the puller's parts from the pulley. Congratulations, you are done!
At some point, you will need to install a pulley onto a pump. If you don't have one, a pulley installer can be made with a bolt, nut, and a flat washer. The pulley puller I bought came with an installer so let's take a look at how this one works. When you see the pics, it should be pretty easy to see how a nut, bolt, and washer would work for this task.
At some point, you will need to install a pulley onto a pump. If you don't have one, a pulley installer can be made with a bolt, nut, and a flat washer. The pulley puller I bought came with an installer so let's take a look at how this one works. When you see the pics, it should be pretty easy to see how a nut, bolt, and washer would work for this task.
This is the installer that came with my puller. Nothing much to it. The bolt portion has two different diameters and both are threaded. The section at the end of the bolt matches the diameter and thread pitch that is tapped into the power steering pump shaft.
To install the pulley, place it squarely on the pump shaft and thread the installer into the pump shaft until it bottoms out. (Note that the pulley in the above pic is upside down. I was not paying all that close attention as I was setting this up to take the pics.)
Now just wrench the nut tight while holding the pulley in place. It will draw the pulley onto the pump shaft.
Continue tightening the installer until the pulley is flush with the pump shaft. The installer can not be tightened any further once the the pulley and pump shaft are flush with each other so there is not need to worry about over tightening.
Well, that is it. Now you know how to remove and install a power steering pump pulley. As I said at the beginning of this write-up, it is very straight forward. The puller is a must have (rent it for free from AutoZone if you have one nearby) but the installer can be made from the proper diameter bolt, nut, and flat washer.
Courtesy of:Jeep TJ Web Site of Stu Olson - N7QJP
Well, that is it. Now you know how to remove and install a power steering pump pulley. As I said at the beginning of this write-up, it is very straight forward. The puller is a must have (rent it for free from AutoZone if you have one nearby) but the installer can be made from the proper diameter bolt, nut, and flat washer.
Courtesy of:Jeep TJ Web Site of Stu Olson - N7QJP
Junior User
Joined: Aug 2009
Posts: 60
Likes: 0
I wrecked my pulley when I tried to take it off. However, the new pulley I bought from Ford ended up costing about 1/3 as much as the correct puller would have cost. Hopefully, I don't have to do this two more times.
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