Originally Posted by mgude

Hey all,
I just installed a new PS pump in my 6.2 GMC jimmy (1986). I have gone through the bleed procedure 4 times and I am getting no power assist. the pump is turning and when I disconected the return lines there was new fluid in them. I don't think I am getting any up to the master cylinder though.

Any ideas?

Thanks

Originally Posted by 2500HeavyDuty

Have some one help you when bleeding, have the front wheels off the ground and turn the truck on and turn the wheels lock to lock like 20 times, and at the same time have your buddy maintain the cold level of power steering fluid, this should get most of the air out of the system.

Originally Posted by mgude

Thats pretty much what I have been doing. The fluid level in the reservoir never goes down no matter how many times I cycle the steering wheel. This is done with the engine off, correct?

Originally Posted by mgude

I have seen that it is important to only fill to the fill line, but I don't see one. Could that be my problem?

Originally Posted by bigcountrysg

You will need a powersteerring pump pulley puller, new pump, and about 4 hours of time to spare. Check the lines though. I say this because they have a tendancy to leak, when they leak they will cover the whole pump with fluid. If it is your front seal then you need a new pump. It has been a while since I replaced one. There should be two bolts I believe one is 5/8 and the other is 9/16. I believe the lines are a 5/8 as well. If I remember correctly the return line has a hose clamp on it. That is the one that is known to leak. Also if you replace the whole pump, don't forget to bleed it. You do this by jacking up the front end and turn the tires left and right. Keep checking your fluid level. Keep doing this as often until all the air is out.