29-05-2018, 06:36 PM
Assume there’s no chance there is a nut inside the casting?
I use 3 in 1 penetrating oil. Leave to soak overnight and then use a socket set driver that fits the screw head as exactly as you can. This lets you put downward pressure on the screw head whilst giving you lots of torque. I would give the screws a tiny nip up to start off with as this can sometimes break the crud that is locking the threads.
I would put copper slip on the threads on reassembly.
Good luck.
I use 3 in 1 penetrating oil. Leave to soak overnight and then use a socket set driver that fits the screw head as exactly as you can. This lets you put downward pressure on the screw head whilst giving you lots of torque. I would give the screws a tiny nip up to start off with as this can sometimes break the crud that is locking the threads.
I would put copper slip on the threads on reassembly.
Good luck.