I have recently installed CPP's power steering kit in my 53 1300.
The power steering box is a 1969 and pump is likely 1975.
When I turn right or left I get a loud squeal when the steering wheel is close to maximum turn. There is plenty of fluid in the reservoir and the truck steers with little effort. Iv'e read where this could be a loose belt or a hooped pump but am not sure its either. Any suggestions appreciated.