5610 Ford steering box

This steering box has had a nagging leak for years. About 3 days ago I put a bottle of Lucas Power steering stop leak in it. Very limited usage since adding the Lucas. Yesterday evening when the steering wheel was turned to the limit, I noticed a sticking but not too bad. Had a load on the FEL forks and dumped the load. Then I decided to limit the steering to see if it would stick again. WELL that is when the steering box exploded. Broke all the bolts that hold the unit together. Steering wheel jumped up and the fuel tank may have been ruptured. Sure smells like diesel. Does any one have an idea what happened and what would cause this Type damage?
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Pressure relief valve in the pump stuck closed. I had it happen on a 3000, it would bend the cylinder rods instantly.
 
While that type of failure is rare, I'm gonna say that it's simply because it had a rough life being used with a FEL and most likely front wheel drive as well. That steering system is simply not designed for the work you're trying to do.

I seriously doubt it's a relief valve issue. You would have blown the side cover gasket before the housing if that was the case.
 
Bern it had a light load on the FEL when the sticking occurred. The tractor has had heavy loads on the loader in the past. I dumped the load and this happened when the loader was empty. Tractor is 2 wheel drive. The steering wheel is stuck tight. Applied ATF/acetone several times today. Will leave it overnight with a good upward pull on it. Maybe some heat tomorrow if it is still stuck. If anyone has any more comments, please post. I need all the help I can get.
Thanks
 

This is the only comment I'll make.
Contact Farmland Tractor Supply in Tangent, OR.
Get their hydrostatic conversion kit and do away with that troublesome steering sector.


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$1500 for the kit, a rebuilt box will cost you $1700
 

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