My '64 Deville had a leak from the steering gearbox input seal.  I pulled the gearbox and swapped out the seal, a relatively painless process.

After refilling the fluid and cranking the wheel lock to lock (car in the air) several times I fired it up.  The wheel immediately jerked all the way right and the steering would not move.  I shut it down and it easily cranks lock to lock.  I did this about 30 times and burped fluid several times.  When I fired it up, it worked 3 or 4 times on the ground then locked up again.

I pulled the pump and disassembled it.  I found white pieces of hardened plastic or rubber inside, probably pieces of an old o-ring?  Other than that the pump looked great, I took the flow valve and other components apart and cleaned and reinstalled.  Same issue.

I have raised the front of the car way up, gone lock to lock about 50 times and it does take or alternately burp fluid.  As soon as I set it on the ground and start it it yanks the wheel and then you basically can't move it until the car is shut off.

It is so tightly bound that it will kill the engine from pump trying to work I guess.  So do I have a pump issue or a gearbox issue?

Of course the local parts outlets have neither.

Help!

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You are probably right, thanks for the info.  I did mark the threads on the spool valve nut and I thought I had it back to the correct location but probably not.  I'll pull the box tomorrow and see what's up.  So much for a Sunday drive!

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