Join Date: Jan 2003
Location: Southwest Michigan
Local Time: 03:03 PM
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More specifics on changing the Power Steering Pump
OK, so I just finished replacing the Power Steering Pump on my '03 MCS. I could not find many specifics on the job, so I am going to try to add some of those here. This was my procedure as I remember it.
1. I used my Mighty Vac to suck as much of the fluid from the reservoir. I couldn't get it all, but at least 90%.
2. Disconnected the low pressure hose from the reservoir (the one toward the front) and again used the Mighty Vac to suck the fluid from the hose.
3. Remove the cooling fan for the pump. (2 13mm nuts) To complete the removal you'll have to disconnect the wire connector, easy release by pushing the lever on the side.
4. Remove the 13mm nut holding the front of the pump down, roughly in between the two that held the fan in place.
5. Remove the two 13mm bolts from the backside of the pump. This is pretty much blind, unless you have some sort of mirror or freakishly small head. You have to come from the backside of the cross memeber and they are at the bottom of the steering rack. You should be able to feel them. The exhaust down pipe made one of them a little tough to get at, but not bad.
6. I used my Dremmel to slot out the hole at the front that the 13mm nut came off. The bracket for the pump was stuck under the engine mount, so I could not lift it out.
7. The high pressure hose is a solid metal tubing that is bolted to the pump with a 13mm bolt. It is a little tight, but you can get it unbolted. There is an o-ring type of press fit for this connection, which you will have to overcome to get it released. Carefully pry it apart. Some fluid will drain out.
8. Now it is just a matter of sliding and twisting the pump around until you can get the pump out. Having the low pressure hose attached made this slightly more difficult, but also made it cleaner. It is also fairly difficult to get the low pressure hose off of the pump while it is on the car.
9. Lastly you can now release the two electrical connections and the pump will be free after you cut the nylon zip ties holding the wires to the bracket.
10. The pump is connected to a bracket which will not come with a new pump, and probably should be removed before sending in to rebuild. Four 10mm nuts and to T30 Torx will separate the pump from the bracket.
11. Now just reverse this process to install.
12. The fluid was available at my local NAPA. Sitting right on the endcap as I walked in the door. I didn't even have to ask for help. $22.50 with tax.
13. I filled the tank, cycled the steering back and forth (while still on jack stands) both with the ignition off and then on. Drove down the street weaving back and forth several times and then checked the fluid level.
'03 EB/EB MCS (options 1,2,3,wipe/mirror,HK, Parcel Shelf, Custom Hitch, Rogue Intake & Exhaust, MINI Madness Pulley, Shark Injector ECU) Donate to MINI2