Does the PS pump need to be primed?
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Elder User
Joined: Jul 2004
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From: Westminster, Colorado
Does the PS pump need to be primed?
I have a failing PS system....Worked great until I had the intake manifold and water pump replaced...ever since then, it's been going down hill, hard and harder to turn.
I feel like the PS pump has gone bad...but before I replace it...does it need to be primed? Is it possible that they forgot to prime the pump when they put it back on after the work...or has my pump simply gone bad? Doe the fliud need to be flushed periodically to save the pump...or is it just a bad one?
This is a 1967 F-250 4x4 with the stock PS system...which I completely rebuild about 3 years ago.
I feel like the PS pump has gone bad...but before I replace it...does it need to be primed? Is it possible that they forgot to prime the pump when they put it back on after the work...or has my pump simply gone bad? Doe the fliud need to be flushed periodically to save the pump...or is it just a bad one?
This is a 1967 F-250 4x4 with the stock PS system...which I completely rebuild about 3 years ago.
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Post Fiend
Joined: Dec 2003
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From: "Islander"
That sounds like the Thompson pump, big round can with small filler.
It should be fine with the proper fluid level, no need to prime just drive it doing lock to lock or with the front end off the ground.
You may have the pressure relief valve sticking open or a worn out
pump. Check the manufactures testing pressures or go into it.
Fluid not burnt, and the steering box known to be in good condition?
Have a cooler in the system?
It should be fine with the proper fluid level, no need to prime just drive it doing lock to lock or with the front end off the ground.
You may have the pressure relief valve sticking open or a worn out
pump. Check the manufactures testing pressures or go into it.
Fluid not burnt, and the steering box known to be in good condition?
Have a cooler in the system?
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Elder User
Joined: Jul 2004
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From: Westminster, Colorado
Yeah...everything else seems fine....seems like the pump was a little low on fluid when it cam back from that water pump job...and I think I may have run it dry or with very little fluid....doesn't seem to be working at all now, so I am going to replace it and see.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by Unimog005
This is a 1967 F-250 4x4 with the stock PS system...which I completely rebuild about 3 years ago.
There is NO Power Steering system listed for any 4X4 F100/350 in the 1964/72 Ford Truck Parts Catalog. No pictures, no application charts, no parts lists.
Nothing regarding dealer installed P/S either.
??
Last edited by NumberDummy; Feb 26, 2007 at 01:07 PM.
Post Fiend
Joined: Dec 2003
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From: "Islander"
You run it dry once it will be toast besides it will whine like hell all the time.
Should you get a reman or exchange pump save your pulley as they come without one. This requires a special puller/installer, I bet you found this out last time.
Should you get a reman or exchange pump save your pulley as they come without one. This requires a special puller/installer, I bet you found this out last time.
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Elder User
Joined: Jul 2004
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From: Westminster, Colorado
Well, it did not work at all when I got the truck...so the rebuild was replacing the pump/hoses and rebuilding everything else.
As far as stock....well, I was told it was.....but in researching parts I only found sporadic listing for the 67-69 years.....so I bought all the stuff spec'd for 73-75 because it looked the same in the catalog....and it fit perfectly.
As far as stock....well, I was told it was.....but in researching parts I only found sporadic listing for the 67-69 years.....so I bought all the stuff spec'd for 73-75 because it looked the same in the catalog....and it fit perfectly.
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Joined: Jun 2003
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You should always spin the pump over by hand or by air-driven hex after installing the (filled) pump and before installing the belt and starting the engine. As you do this you'll notice the air bubbles coming to the top of the fluid level. We had a TSB at the Ford dealer on this many years back.
