I’ve seen issues like this before so I am wondering if there is a special trick to it. I just pulled a Ford power steering pump and took off the high pressure line but now the line won’t thread into the rebuilt pump. The threads in on the line look perfect. The threads of the rebuilt pump seem OK , but just not sure. The rebuilt pump is from Motorcraft. I’ll probably put the old pump back into position to see I can thread back in. The rebuilt one is from Rock Auto, so I can send it back, but wondering if there are any tips out there. Thanks.
Threading-in high pressure line into PS pump
- Thread starter Snagglefoot
- Start date
Most likely the threads in the reman pump are a little rough. Depending on the rebuilder, they don't protect them during the rebuilding process.
Crown is the worst at it.
Crown is the worst at it.
Can you get a similar fitting and install it loose into the new pump? That might clean up the threads enough.
Thanks, also I’m willing to purchase a die and tap set to chase large threads. Does anyone know firstly if power steering fittings for 2000 and above are metric? And what would the common sizes be? The threads on the power steering pump look to be about 19 mm in diameter.
Have a picture of the fitting on the p/s line? If its the standard Ford pressure line they can be a bit of a pain to start. I wanna say its an 18mm thread but dont quote me on that
AutoMechanic
Site Donor 2024
Probably needs to be rethreaded. We’re you using Teflon on install sometimes that helps a lot I recommend trying it if you haven’t.
Fords usually have a seal inside the Nut & Teflon seal on the outside that of coarse needs to be changed every time. They can be a pain if this is your first time dealing with them. You may need to loosen any hose/line support bracket near where the line threads into the pump.
Year/make/model/engine should be included when asking such a question
Year/make/model/engine should be included when asking such a question
Nick1994
$100 site donor 2024
Power steering hoses suck! Just be patient and keep trying. I've found you may think you're threading it straight on, but try to change the angle of how you're looking at it, you Have to be perfectly straight on it.
Here are some photos. It has a new Teflon ring on it but also shown is where the line thread touches the nut. It doesn’t thread in beyond that point. The engine is a 2005 Ford Taurus 3.0 V-6. Please don’t use the photo to judge straightness as there is bit of optical illusion going on with the photo.
For Mr. Clinebarger, good point, the fitting is on the end of the rather stiff line that is clamped to the exhaust manifold with a nut. I’ll heat up the nut and try get it the nut loosened up so that the bracket is loose and does not try twist the assembly. Stay tuned. Thanks everyone. Snag
Although it might be the orientation issue, I had a look at my Die and Tap set and the largest I have is 1/2 inch and 12 mm. I can probably purchase an individual Die and Tap or better yet, a thread chaser if I can verify the thread. Thanks.
Aren't the pressure lines NPT/ tapered fittings?
On a Taurus you arent getting it back together without that clamp to the exhaust manifold stud being loose. They usually come apart okay even here in the rust belt. I also usually start the line before I tighten the bolts for the pump
Success! It’s installed. Thanks everyone. Especially to Mr. Clinebarger for suggesting to loosen any clamps. There was one attached to a stud on manifold. I put the propane heat to it, got it loose with a wrench ( my impact wrench would not fit), then I sprayed it with liquid wrench and the nut came off easily. My impression is that I was able to move the axis of the fitting to more of a 10 o’clock position and this time instead of spinning, I felt resistance and started turning it with a wrench. It caught and I was able to cinch it up and bury the Teflon ring. Thanks again. Here are some photos for anyone doing it in the future. The last photo is reinstalling the nut after coating the stud with antiseize. Enjoy. 
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