I know there are plenty of guys out there complaining of poor power steering especially while trying to turn lock to lock while not moving. The pumps and gear boxes on the SD's are not the greatest but I found this procedure for bleeding the SD power steering system on AllData. I have used it several times over the last year while replacing some PS parts. Read on.
- Lift and suspend the front end off the ground to clear the tires.
- Open the PS reservoir and make sure the fluid is topped off. I used Mercon V as recommended.
- This part is not in the procedure, but trust me you'll want to use it. Double up some strong rubber gloves, they work best. Take the doubled up rubber gloves and use them to close off the PS reservoir using the opening where you would stick your hand. You want this rubber glove "lid" to keep the PS fluid inside the PS reservoir as your burping the air out. Clip a small tip off one finger to allow air to escape. The alternative is to keep refilling the reservoir as you burp fluid and air out. Without the gloves you will have PS fluid all over the frame and gear box.
- Now, this is where you will be burping the air out of the system.
- Inside the cab with KOEO begin to turn the steering wheel lock to lock slowly. It will be somewhat difficult, but what you're doing is forcing fluid through on right turn and air out on the left turn, or visa versa IIRC. When the air is being forced out it is also causing the fluid in the reservoir to splash, hence the gloves.
- You will usually need to go lock to lock at least 20 - 25 times to get all air out. If you replaced any parts such as pump, gear box, lines etc you may need as many as 60 turns lock to lock.
- You may need to check fluid periodically as you're bleeding air out and pushing fluid.
For me this worked excellently. I can easily turn lock to lock while standing still.