A different PS conversion question
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Posting Guru
Joined: Feb 2002
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From: seattle us
A different PS conversion question
I have a PS box and pump from a '78 F250 that I am planning on putting on my '71 Highboy. I drove the vehicle before I removed it from the truck and the pump was bad and leaking PS fluid, so it was like driving a manual steering truck. My question is, does that mean I need to have the box rebuilt? I don't want to get this all together only to find out I need to take it apart and have it rebuilt. Is there any way to test it while it's of the vehicle?
Thanks
Thanks
Elder User
Joined: Sep 2002
Posts: 622
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From: Urbandale, Iowa
yes - rebuild it
or get another one - unless you need another color of fluid leaking on your driveway. You just tested it on the truck - it leaks and doesn't assist with steering.
I'd say it failed the test, wouldn't you?
Good luck, and let us know how it goes.
I'd say it failed the test, wouldn't you?
Good luck, and let us know how it goes.
Last edited by pward76; Apr 15, 2004 at 12:11 PM.
Elder User
Joined: Sep 2003
Posts: 794
Likes: 1
From: Portland, OR
Hey there,
My experience is that boxes are alot tougher than pumps, but it's tough to flush the nasty fluid out of them. If the fluid was black and dirty in the system, I would connect both your hoses to just the box while you have it out of the truck. Place the open ends of the hoses in a bucket with a gallon of clean ATF and cycle the sector shaft (pitman arm) back and forth a few times to purge the box. I would do it as cheap insurance on a box like the one you have since they're hard to find and spendy to rebuild. I think I paid $65 for a rebuilt PS pump for my 70 and it works great. I tried rebuilding this style ford pump myself and have had poor results 2 times.
My experience is that boxes are alot tougher than pumps, but it's tough to flush the nasty fluid out of them. If the fluid was black and dirty in the system, I would connect both your hoses to just the box while you have it out of the truck. Place the open ends of the hoses in a bucket with a gallon of clean ATF and cycle the sector shaft (pitman arm) back and forth a few times to purge the box. I would do it as cheap insurance on a box like the one you have since they're hard to find and spendy to rebuild. I think I paid $65 for a rebuilt PS pump for my 70 and it works great. I tried rebuilding this style ford pump myself and have had poor results 2 times.
Thread Starter
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Posting Guru
Joined: Feb 2002
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From: seattle us
Thanks Avg., I think I'll try that. The fluid that was in there seemed pretty clean, but it was hard to know for sure since I knew the pump was low and so I added fluid right away. Although it's hard to say, I get the impression that not a lot of driving of this truck has happened in the last few years. I did not feel any clunking or anything unusual when I drove it around the block, other than it had not fluid and felt like manual instead of power steering.
