Power Steering pump disassembly and cleaning

New seal kit and pump kit.

Everything came apart easily except for the seal. I used a long drift and small hammer. It finally broke loose – see the raised lip – and then it came off easily.

The old pump parts looked really good so I wasn’t sure I needed the new kit. Just in case I got out my good calipers and checked the rollers. Turns out the old one on the right is about .003 smaller than the new one.

The new kit is on the left and the rollers are slightly further down in the used unit. So I decided to go with the new kit.

Time to give all the parts a good cleaning and then a blow dry with the air hose.

All cleaned up and blow dried.

I tipped up the spool valve to show a small bleeder hole. Behind it is a check ball and a strong spring. The air gun was able to blow out the cleaning fluid OK. Also there are holes in the side which can be used to blow out the fluid around the spring.

On the bottom right is a (blurry) snap ring and two tiny round cylinders. Easy to loose the small one. It fits inside the pump barrel and holds the pump cam in place. The other fits in the shaft to hold the pump gear in place.

One thing the kits don’t include are new bushings for both halves of the housing. The shaft is just shiny and I can’t see much in the way of wear so hopefully the old bushings will last for awhile yet.

Next I’ll attempt the assembly in the correct order!

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