Power steering control valve proplem
Thread Starter
Racer
Joined: Jun 2007
Posts: 291
Likes: 6
From: Delray Beach FL
Power steering control valve proplem
My control valve was leaking on my 70. It was 7 months old and the guys from Zip shipped be a replacement ASAP. The problem is when I thread it on the center link I can not get to to thread any further then about 8 turns. The old one unscrewed with no problem. I have even put a little grease on the threads. I even tried removing the bolt from the control valve. Any one have any suggestions of what is my chance the replacement valve may be out of wack?
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Take a chisel and drive it gently between the ears where the pinch bolt goes.Keep the punch out at the ears.This will spread it a little and usually lets it thread on.Also check as others said for a burr in the threads at the split of the threads.
Instructor
Joined: Dec 2007
Posts: 245
Likes: 2
From: Jersey shore NJ
I just had the same problem with mine. its a lonestar rebuilt from Zips.
I had to keep threading it on and off getting it on a little farther each time. You do need to get the pinch bolt off before you try and thread it on. then line the pinch bolt up with the flat spot on the link bar. I was almost going to use a pipe wrench on it ,but that would have marred it up. I did use Rubber strap wrench on it to wrap around it and get the leverage to turn it on tight.( I think the rubber strap wrenchs are used for plumbing?)
I had to keep threading it on and off getting it on a little farther each time. You do need to get the pinch bolt off before you try and thread it on. then line the pinch bolt up with the flat spot on the link bar. I was almost going to use a pipe wrench on it ,but that would have marred it up. I did use Rubber strap wrench on it to wrap around it and get the leverage to turn it on tight.( I think the rubber strap wrenchs are used for plumbing?)
Premium Supporting Vendor
Joined: May 2000
Posts: 4,312
Likes: 70
From: Clearwater FL
Team Owner
Joined: Jul 2004
Posts: 40,412
Likes: 792
From: Redondo Beach, California
I fought this problem on installing a rebuilt control valve on my 68.
The rebuilt valve female threads (1 /16 inch threads) had some gunk of some sort in them. I cleaned them out with a dremil wire brush and eventually was able to wrench the control valve on.
For my 70 install, the relay rod theads were scruffed. I bought a die and cleaned them up. I think the size in 1 1/16 18 NF. This is an unusual size, I had to get one from a machinests supply shop. Cost was ~$28.00. Similarly, if you have damaged threads in the control valve, a solution is to buy a tap and clean them up.
The rebuilt valve female threads (1 /16 inch threads) had some gunk of some sort in them. I cleaned them out with a dremil wire brush and eventually was able to wrench the control valve on.
For my 70 install, the relay rod theads were scruffed. I bought a die and cleaned them up. I think the size in 1 1/16 18 NF. This is an unusual size, I had to get one from a machinests supply shop. Cost was ~$28.00. Similarly, if you have damaged threads in the control valve, a solution is to buy a tap and clean them up.
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Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Just in case you decide to do what I suggested I went out and took a pic so its more clear as to what the chisel is going to do and how to drive it in.Sorry the pic is not real good I couldnt stop shaking,its frigging cold here.This should make it easier to thread on.
Intermediate
Joined: Mar 2006
Posts: 28
Likes: 2
From: Lakeland Florida
The new one should screw on as easy or hard as the old one come off.
I had the same problem from Mid America..Old one came off just fine new one screwed on about 5-6 threads..Found gaulded threads on new valve.Called Mid America and complained about new valve and bad threads and no point in rebuild process to varify good threads.They sent me another one that screwed on as easy as the old one screwed off.
I had the same problem from Mid America..Old one came off just fine new one screwed on about 5-6 threads..Found gaulded threads on new valve.Called Mid America and complained about new valve and bad threads and no point in rebuild process to varify good threads.They sent me another one that screwed on as easy as the old one screwed off.
Burning Brakes
Joined: Jul 2008
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From: Canastota Ny