View Full Version : Power steering pump

08-03-2009, 10:53 PM
has anyone ever tried and had luck with slightly shimming the power steering pressure relief spring in the pump? I would like to gain a bit more pressure but am afraid of blowing seals. maybe drill out the pressure fitting a few thousands. Anyone that has done this let me know the results.

thanks in advance[cheers]

FU Toolbag
08-04-2009, 05:28 PM
No problem. It's the first thing to change when you do a hydro assist.

08-05-2009, 08:03 AM
Done it, but its best done with a preasure gauge. The shimming that is required is actualy unshimming. To raise the preasure you remove the spool valve in the pump. There is a 7/16 fitting on one end. You remove that and remove shimms to up the psi. Some dont have shims, on those you just screw the fitting in. If the preasure goes beyond about 2500 psi, the pump casing in the reservoir will explode,,,,,,,,,and then Zero psi.

m j
08-05-2009, 06:35 PM
pretty much everyone goes too far their first time and blows it up.

08-05-2009, 11:08 PM
lol yah i dont wanna be that guy lol