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Suspension, Handling, Brakes, Wheels and Tires
power steering noise
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<blockquote data-quote="Stanglover" data-source="post: 405717" data-attributes="member: 3596"><p>Well, I'm far from an expert on this, but I have rebuilt a couple of PS boxes myself with good results. Mine are variable ratio 16 / 13:1.</p><p> It make little sense to me why the rebuilder would just go the route of changing the ratio, rather than finding out why. The first component I would look at within the box, is the rotation valve or spool valve as it's also called. I had one of these that wore out and I lost power to the right side. There is no point in me getting too far into this, but if you changed the pulleys to bypass the pump and the noise stopped, then it isn't the PS system. I would however question what pulley you have on the water pump as well as the pulley you have on the PS pump. They have to match. Just because it's a pulley, doesn't mean it's right. You could be turning the PS pump at the wrong speed, as well as the water pump. Find out the correct part numbers for your car as well as the crank pulley. My car was converted from manual to power steering and I had to source a crank pulley as well as water pump. The ps pump came off a 71 Mach 1 and was correct.</p><p>Going back to the PS pump, there is a video on NPD's website I found under "Power steering pump". It's a bit cheesy, but in it, the one guy says he ground the surface of the front plate by only .0005", and then the pump squealed. As I'm also about to rebuild a pump or maybe just replace it, I took note of that.</p><p>Our friend Bentworker has rebuild several boxes adding fast ratio components. He nay have a better idea as to why.</p></blockquote><p></p>
[QUOTE="Stanglover, post: 405717, member: 3596"] Well, I'm far from an expert on this, but I have rebuilt a couple of PS boxes myself with good results. Mine are variable ratio 16 / 13:1. It make little sense to me why the rebuilder would just go the route of changing the ratio, rather than finding out why. The first component I would look at within the box, is the rotation valve or spool valve as it's also called. I had one of these that wore out and I lost power to the right side. There is no point in me getting too far into this, but if you changed the pulleys to bypass the pump and the noise stopped, then it isn't the PS system. I would however question what pulley you have on the water pump as well as the pulley you have on the PS pump. They have to match. Just because it's a pulley, doesn't mean it's right. You could be turning the PS pump at the wrong speed, as well as the water pump. Find out the correct part numbers for your car as well as the crank pulley. My car was converted from manual to power steering and I had to source a crank pulley as well as water pump. The ps pump came off a 71 Mach 1 and was correct. Going back to the PS pump, there is a video on NPD's website I found under "Power steering pump". It's a bit cheesy, but in it, the one guy says he ground the surface of the front plate by only .0005", and then the pump squealed. As I'm also about to rebuild a pump or maybe just replace it, I took note of that. Our friend Bentworker has rebuild several boxes adding fast ratio components. He nay have a better idea as to why. [/QUOTE]
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power steering noise
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