In article .com,
says...
I just bought a corded hammer drill from Homebase, brand PBX (their
own) and,... I cannot work out how to insert the drill bit. (Pause
while you all have complete hysterics) It's a keyless chuck where you
pull the rear sleeve of chuck back and then turn front sleeve to
tighten/loosen the chuck.

The rear sleeve seems to move back, although only slightly and the
front sleeve only turns a half - 3/4 turn which barely tightens the
chuck at all.

I know this is absolutely stupid but I am completely baffled and
embarassed to have to ask for help.

Please someone put me out of my misery!


My trusty old Elu drill has a similar collar arrangement.

It sounds as though your collar ring is not pulling back far enough to
fully release the chuck mechanism.

Have you considered that it might be faulty? Could you not take it back
and try a replacement?

--
Ziggur

"S'ils te mordent, mords-les"