I pulled another spool valve from a late seventies Mopar at the junkyard and
pulled that apart taking note of some fits and clearances. The actual spool
valve is a precision fit mated to it's housing.Then I pulled the one from my
72 Imperial. Big difference is the fit of the arm(driven by steering box to
move spool valve to port oil for assist) in the spool valve. The original
fell out when I pulled the spool valve off the steering box.The one from the
junkyard was a tight fit in it's spool valve. I had to pull hard to separate
that one.These arms are balled at each end with a cut through the middle of
the ball end which allows it to compress enough to fit into the spool valve
cavity and then expand to create a tight fit. That is how I see it anyhow.
Seems mine was worn out or defective. So swapped spool valves and arm after
cleaning and resealing the spool valve. Works great. Car steers much much
better. Auto centers and just drives nice. Wonder why I did not do this a
long time ago. Always thought it was something else but after checking
everything else there was nowhere else to go.
Robin Giesbrecht
72 Imperial
>From: randalpark@xxxxxxx
>Reply-To: mailing-list@xxxxxxxxxxxxxxxx
>To: mailing-list@xxxxxxxxxxxxxxxx
>Subject: Re: IML: power steering problem
>Date: Fri, 09 Dec 2005 20:33:32 -0500
>
>Could it be that your front brakes are grabbing?
>
>Paul W.
>
>
>-----Original Message-----
>From: Robin Giesbrecht
>To: mailing-list@xxxxxxxxxxxxxxxx
>Sent: Fri, 09 Dec 2005 16:24:03 -0700
>Subject: IML: power steering problem
>
>
>
>My 72 has never steered as well as I would expect. It has always liked to
>turn left as opposed to right. Yet front wheels off ground and engine
>running nothing moves.My 70 Newport steers very nicely compared to the
>Imperial. Anyway I just resealed the power steering pump due to a leak and
>it was functioning fine. But driving down the highway this morning the car
>felt like it was pulling to the left. Letting go of the steering wheel
>resulted in the car sharply veering to the left. I tried this twice and
>then it started behaving "normally" again. Take hands off wheel and it
>tracks straight. I had not played with the steering box at all.I am
>thinking the servo valve was sticking. So the box will come apart next
>week.
>
>R. Giesbrecht
>72 Imperial
>
>
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