You've checked the PS fluid level already? Is the fluid a nice clean pink? Have you tried bleeding it by turning it to full stop 3Xs...all the way right and left?
You probably don't need all the hoses at all, OP, if the pump is bad. It's not a bad idea, but it's a lot of work and $ you probably don't need to spend. All my PS hoses are original except for two. Also, you probably don't need a reservoir, despite everyone here thinking you do. You can clean up the vent tube and replace the gasket...then just get new clamps to replace the factory clamps.
Anyway, check your fluid level. Should come to the second fine line on reservoir cap when cold.
Sorry IDK the answer to the question about the pump, but if you use advanced/title search for PS Pump, I'm sure you'll find your answer.
I'm so depressed. No one wants to come see me. :(
Mangofy your E46!