I finally replaced my leaking power steering pump, with new hoses and fluid flush to boot. No more oil drippings on the driveway!
It took me about 6 hours of replace them, here are some photos and thoughts of the process:
1) Old steering pump. The serpentine belt and battery casing are already off to make operating space.
2) Pulley puller mounted on the wheel, ready to go! I found out even with the puller, it required a lot of force to loose the pulley. So I had to use a steel pipe as an extension handle for the ratchet wrench.
3) Here are the pulley puller and installer tool set. I borrowed the pulley puller tools from an auto chain store through their tool loaner program (Thanks, Advance Auto Parts!
4) The pulley is off! Now that the 4 mounting bolts are exposed, they are quite easy to take off.
These 4 bolts aren't the same, mine has 3 long ones and 1 short one. So it's very important to mark down
5) The rest are pretty straightforward: put the drip pan underneath; cut the two hoses and wait for the pump to empty its fluid content; loosen the 4 mounting bolts and take out the old pump. If you want to reuse the old hoses, you would need a 18mm stubby wrench to unlink the high pressure hose from the pump. I am glad I didn't have to do that because the space is just too tiny to apply adequate force with a stubby wrench.
6) Assemble new hoses to the new pump; install the new pump to the mounting bracket; put the pulley back in with the pulley installer tool
7) Now raise the front of the truck and sway the wheel to bleed the fluid in the rack and pinion. I took a picture to mark the hose position because I didn't want to mix up the hoses. The left one is the return line, the right one is the high pressure line. A 16mm stubby wrench or an adjustable stubby wrench is a MUST. The space is very tiny down there.
8) Connect the new hoses to the rack and pinion; put new fluid into the new pump; put back serpentine belt/battery;
turn on the engine to idle, turn wheels to fill more fluid etc etc , and we are done.
Again thanks everyone who patiently commented on my original post and your advices have been very helpful!
My 97' Dakota is leaking power steering fluid. It seems to be coming out between the pump and pulley casing.
So I am wondering what might causes the problem. Is there some kind a seal/gasket between the pulley casing and the pump?
Leakage at the bottom: