Lovely weather to work on the car today. I started to investigate the problem with the power steering. First off was to get rid of all the old power steering fluid for which I know is the wrong type.
Quite simple to do really. Unbolt the reservoir and disconnect the return hose to it. Then tip up the reservoir and pour into a bottle. Next, jack up the front axle off the ground, pop the return hose into the bottle and move lock to lock. Then again while the car is running. Connect everything up, fill and go from lock to lock to bleed the system.
Now that I have the correct green HSMO in there, which is a lot thinner that what was in there before, it has not sorted the problem. But I have diagnosed it...I think.
The power steering pump has been moved onto the opposite side of the engine, and uses a pulley type pump instead of the normal gear driven one. When I turn the wheel and put load onto the pump, the plate is flexing and causing the belt to slacken off and slip. Which is why my steering is very heavy. As you can see in the picture, the plate looks quite Heath Robinson. Looking at the shape of it, no wonder it is flexing. I think the pump is still okay though, as there is no sign of leaking and it turns freely by hand. I'll be jumping on the mill next week and machining up a much thicker plate and tensioner. Unfortunately, due to the space and obstructions, I cannot alter the profile.
That is in fact power steering fluids.