29-05-2018, 05:06 PM
Trying to dismantle a marine gearbox casing. Under the top, there are four setscrews fastening the apparatus for holding the end of the gearstick selector. They go into a particularly thin piece of the gearbox casting.
Two will not shift.
Tried kitchen flambe gas torch, tried WD40, tried a sharp but not too hard tap, but now the screw tops are starting to wear at edges of the slot.
Don't want to disturb/damage the casing - what next before I have to drill them out?
Two will not shift.
Tried kitchen flambe gas torch, tried WD40, tried a sharp but not too hard tap, but now the screw tops are starting to wear at edges of the slot.
Don't want to disturb/damage the casing - what next before I have to drill them out?