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My PS has a low level moan, even when my hands are off the wheel. It hasn't changed since I got the truck and I can live with it, but If I can pick up a decent pump from the junkyard, I might go for that. Question is, are there any markings on these pumps to ID date of manufacture. Not looking for just any pump as I might get something worse than mine. If I come across one that's younger than the truck, I'd like to know if there is a way to identify it. Or maybe you guys have a good way of testing them without a running vehicle.
I've heard to stay away from remans and new is ridiculous.
Remans suck thats about all I have for ya I will say Royal purple fluid is good stuff a system flush would be good thing. Just changed my fluid again and installed an in-line filter each time Ive dumped my fluid some dirt came out.
I know your power steering is not easy to flush or change as the 2.5 has an external fluid tank.
I disconnected the lines where they entered the rack and let it all drain. Then, with the truck off, I turned wheels lock to lock so it spat the rest of the old PS fluid out. I was doing a transmission drain at the time, so I flushed it with the used ATF first, drained again and added new ATF. The pump is just old with a slight constant moaning. New fluid won't help at this point.
My buddy owns Steerco Performance/AGR Steering in Fort Worth. This isn't so much a plug for him as a quick chronicle of a research & development attempt.
The pumps on our trucks are called "Saginaw P Pumps". They use a bronze bushing to support the shaft, which is usually what causes a leaky mess. The pump itself is fairly small if you remove the tank, but it's still pretty sizable.
At his suggestion and my space requirement, I am converting to a GM / LS style "Saginaw Type 2 pump". It is MUCH smaller, is designed for either external or onboard tank, and uses a sealed roller bearing and coated vane pump to generate pressure. Mine is set up for 1250 PSI at 3 GPM with a .120 oriface as I recall.
I'll be using a Jeep JK power steering tank PN 52126151AG and suction hose PN 68078355AF. I picked up the assembled pump on Friday and will order the mopar parts on Monday.
The mounting ears are on 80mm centers, as it is designed to mount to an LS cylinder head with 5/16 bolts.Pulley I am using is 5.25", same as my underdrive crank pulley. GM PN is 10166383ABW , application unknown. If you have the stock 7.5" pulley, you will want a bigger pump pulley- the pump likes to be driven 1:1 with the crank most of the time, maybe a slight overdrive. The bearing is much more tolerant to RPM than the bronze bushing.
It may well be. Having seen them torn down, I like the TC/T2 design much better than P pump. But the P pump is designed to move alot of fluid for trucks/steering boxes, TC/T2 is designed for cars and racks.
You might see if Dakaz is right, I doubt the mount from an I4 would fit the 4.7 though.
Wait, actually. I dont know if the 4.7 uses the P pump. It's a teardrop shape? You may have to go look, maybe it uses this pump too. I was thinking of the pushrod motors.
This is a 2.5 power steering pump it dosent make a lot of noise that Ive noticed only on extreme L or R turns I prefer an external tank they usually hold more fluid.
After-market has many tanks available in many sizes you just need the correct fittings.
Power steering pump info
