Power steering - 1970 with small block

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Author Topic: Power steering - 1970 with small block  (Read 1128 times)

Offline Frank70

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Power steering - 1970 with small block
« on: January 14, 2019, 08:48:06 AM »
Hi Guys.

Been a while since I have been on here.

I decided to replace most of my P/S components - ram, control valve , all the hoses etc. Only thing I didn't change was the pump as I recoed it a few years back.

So after some initial leaks from the hoses , I fired it up and no leaks. Wheels were pointing straight ahead. topped up the fluid after it circulated around the system.

Went to turn the wheel - was hard as a rock. Had plenty of fluid still.

Turned to wheel a bit harder and then the wheels and steering wheel started going back and forth by itself with a fair bit of force. Kept doing that until I turned off the ignition.
Would have broken a finger I reckon if I had my hand inside the wheel.

I figure the only thing it can be is that I have the small hoses that go between the ram and control valve the wrong way around. I thought I put it back the way it was and also same as some pics I found on the internet.

Thoughts ?  Probably a common problem.

Thanks,
Frank.


Online Dwayne

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Re: Power steering - 1970 with small block
« Reply #1 on: January 14, 2019, 09:03:48 AM »
Your car may require an exorcism, Fitzy may have a contact for you.

Offline Frank70

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Re: Power steering - 1970 with small block
« Reply #2 on: January 14, 2019, 09:09:32 AM »
Thanks. I already contacted Father Merrin.

He suggested posting here.

Offline sms777

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Re: Power steering - 1970 with small block
« Reply #3 on: January 14, 2019, 09:10:35 AM »
Here is your fix.
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Offline 67FBGT

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Re: Power steering - 1970 with small block
« Reply #4 on: January 14, 2019, 01:09:03 PM »
Quote
I figure the only thing it can be is that I have the small hoses that go between the ram and control valve the wrong way around.
I have read that if the small hoses are inadvertently crossed upon reinstallation then yes the steering wheel has a mind of its own.

Offline Frank70

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Re: Power steering - 1970 with small block
« Reply #5 on: January 14, 2019, 05:18:58 PM »
Here is your fix.

Thanks. I don't think that was the problem I was seeing, but probably I will need to do this if the control valve is not centred.

I tried to make it as close to centred as possible when I put it back together.

Offline Frank70

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Re: Power steering - 1970 with small block
« Reply #6 on: January 14, 2019, 05:19:56 PM »
Thanks. I don't think that was the problem I was seeing, but probably I will need to do this if the control valve is not centred.

I tried to make it as close to centred as possible when I put it back together.

Yeah thanks -certainly they had a mind of their own. Gave me a bit of a surprise and lucky the car was well supported.

Offline SMH00N

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Re: Power steering - 1970 with small block
« Reply #7 on: January 19, 2019, 09:55:34 AM »
Did you torque the nut inside the valve correctly? It's like 100lbs per INCH not foot IIRC. That nut pressure determines the pressure the valve has on the system.

Offline seany-boy

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Re: Power steering - 1970 with small block
« Reply #8 on: January 26, 2019, 09:49:55 PM »
Definitely sounds like the hoses are in the wrong hole. You don't need to ask me why I know this  :ouch:

Get a manual and check or let me know if you need a photo of a ram from beneath. It can be confusing. Not going to say how much of a problem the wrong hole can be....oops I just did. :ouch:

Offline Frank70

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Re: Power steering - 1970 with small block
« Reply #9 on: February 03, 2019, 03:02:57 PM »
Thanks guys.

I switched the hoses over and fixed that problem. But it's leaking from the hi-pressure and return line at the control valve.

I think the tube seats inside the control valve are worn from my talking it apart so many times. I ordered new ones and waiting for them to arrive from the US.

Hopefully that fixes it.

Offline seany-boy

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Re: Power steering - 1970 with small block
« Reply #10 on: February 03, 2019, 03:26:15 PM »
They are notoriously difficult to get seated perfectly. Even new ones. I kept fiddling until the sealed, the angle of the connection needs to be correct

 

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