There was one last mechanical system that needed refurbishment on Grace and it was the Power Steering. Based on the amount of greasy caked up crud on the power steering pump and control valve and the fact that rubber seals generally don’t last 60 years, it was time for a full rebuild of all components.
I had previously rebuilt the power ram cylinder but the rest of the system needed some attention. I purchased a power steering pump rebuild kit from one of the Tbird parts suppliers and tore into it. Basically I replaced every rubber component of the system which should give Grace a leak free power steering system.
First was removing the pulley and then I was able to gain access to the split ring retainer which holds the main shaft bearing. Behind this bearing is a rubber seal which was leaking pretty badly based on the caked up greasy residue.
I cleaned off some of the mess with a wire brush before removing the reservoir and the bolts that hold the two pieces of the pump together.
Once I had the two pieces broken apart with coercion from a small pry bar, I dug into removing the front bearing to gain access to the shaft seal.
With a plastic hammer I was able to drive the shaft out the front of the pump which took the front bearing with it. I cleaned the shaft and bearing, installed a new seal after removing the old with a seal puller and was sure to lube the new seal to allow the shaft to be installed without ripping the new seal.
There are a handful of o-rings that also were replaced along with painting the components the original colors before reassembly.
With the pump rebuilt it was time to work on the control valve. You can replace the control valve seals without removing the control valve from the the car. First step is to remove the two screws that retain the dust cap.
The next step is to remove the retaining nut followed by the plastic washers, spring, spacer and retainer plate. I placed all the components on a clean towel to keep the order correct. Then I removed the control valve spool which is the part that needs the seals replaced.
The seal furthest in the control valve will undoubtedly stay in the control valve housing so I used a pick to pull out the old rubber seal.
Good news is you can just install the new seals on the spool and use it to install the seal furthest in the control valve. You’ll want to ensure the lip of the seals face inward, meaning the highest points are closest to the middle of the control valve spool.
I used some lube on these seals to ensure they weren’t damaged in the install. After reinstalling the spool I put together the rest of the valve in the order I removed them.
The last step was to install the pump to the bracket already mounted to the water pump and to install the lines. These went together pretty straightforward. The bracket on the water pump has a threaded section where the slotted part of the pump bracket goes, then there is another hole that just has a bolt run through it and the pump bracket.
The last part was just installing the new rubber lines between the control valve and the power ram and pump.
The last step will be to install the v-belt and fill the system with ATF. Once I get those two baby steps done I should have all the mechanical system completed on Grace!
Next steps (other than cruising SoCal top down) is to install the side windows and door panels. I had to order a few parts to complete the window and door panel install and hoping those arrive the end of the week so I can keep making progress next week. Having a complete interior will certainly make Grace more comfortable to ride in!