The ones on our 1948 Chevy Truck, 3100 series, are uneconomical to repair. I’ve been able to get one of the rear ones to move, we used rust removers, BP Blaster, and heat to get it free and used hydraulic jack oil. However on three of them we’ve not been able to free the piston / spring assembly. We used the same process as for the one we got to work. Apple Hydraulics could maybe repair them and that $185 each + $70 or so for replacement housing and they presently don’t have any. Any ideas?
