'96 ZJ w/ 4.0 and no speed proportional steering.

No info came with the pump, and I can't find anything similar to them on my old one. Any idea what these might be for?

White one is flat, ~16 mm outer diameter, sort of plastic-like material.
Black one is round, just over 11 mm outer diameter, and more like rubber.




Thanks for any help!

 

I think they are for mounting the reservoir, if I'm not mistaken. The white one may be for the cap. Just a guess though.

 

I was thinking reservoir for one of them too. Came already assembled, but I'll pull it apart and see if it looks like it fits somewhere!

 

Well, got the pulley off/on without the right tool.

For removal, since the shaft had fallen out of the old pump, I just used a hammer, punch, and 2x4 with a hole drilled in it... Probably would be reasonable to hammer it out with the old pump still on, but a bit more difficult.

For installation, here's my $2.26 pulley installer from Home Depot:




3/8" threaded rod, 3 nuts, and a few washers ascending in size to better distribute the pressure from the lower nut. The upper two nuts are tightened against each other to give a better holding point than the rod itself. Was easier than removing the pulley.

I used a small amount of engine oil to lubricate the pump shaft and the rod threads. Also lightly heated the pulley with a propane torch. Not sure if all that was necessary since it ended up going on very easily, but I didn't want to get the thing halfway on and realize then that it needed a bit more help.

 

Ok, so the reservoir seal was already there, and the two I have are too small for that anyway. The return line just has a barb fitting so no seal required. The cap is too large for either. The pressure line does has a seal similar in size to the back one I have, but it is tapered differently than the extra, and it's in good condition, so I'll just leave that.

So I still have no idea.

 

Ok, been driving around with the new pump for a while now and it's working alright, but seems to have much worse performance than my old pump, especially at low speeds. Parking may as well be without power steering.

I went with this one:
Put the new pump in, flushed the lines, filled with new fluid, and got rid of air bubbled (turned wheels fully left then right ~20x while off the ground.)

Figured I'd give it a few days to see if it was just residual bubbles, but still no luck.

Any ideas?