I recently bought a Bosch PSB 500 RE power drill and already I kinda screwed up the machine.
The chuck is keyless, consisting of two parts which I'll refer to as the head and the base. You would hold the base and rotate the head relative to the base to loosen or tighten the bit.
The machine is also equipped with a grip that is located on the drill body just before the base of the chuck.
While drilling this grip slipped and caught the base, stopped it from turning, so that only the head of the chuck was turning in the grip direction.
Now the whole chuck is too tight and it seems I can't release the bit any more.
Any solutions?
Edit 1
I tried wearing gloves, it didn't help. I also tried putting some WD40, but that didn't help because the bit is way too tight.
I heard that the chuck assembly can be replaced, what do you think?
Best Answer
Put the drill in reverse, firmly grip the chuck (the part you were calling the head) and gently squeeze the trigger up the point that you cannot hold on. If you hear clicking, and it doesn't torque very much, you need to turn the torque setting up to the maximum (the highest number, or the drill setting if it has one). If it still doesn't budge and you're not able to hold the chuck against the force of the drill, you may want to use something stronger than your hand to hold the chuck. A strap wrench is well designed for this task and won't damage the chuck.