Jet GH-2040ZH Mode D'emploi page 12

Carefully remove the chuck form the spindle.
Clean all contact surfaces.
Lift the chuck up to the spindle nose and press onto the
spindle.
Tighten in place by turning the cam locks ¼ turn
clockwise.
The index mark (A) on the camlock should be between
the two indicator arrows (B).
If not, adjust the cam studs by turning them in or out by
one turn as needed.
Tighten cam locks.
Attention:
Never exceed the max speed limitation of the work
holding device.
Jaw teeth and scroll must always be fully engaged.
Otherwise chuck jaws may break and fly off in rotation
(Fig 7).
Fig 6
Fig 7
Avoid long workpiece extensions. Parts may bend
(Fig 8) or fly off (Fig 9).
Use tailstock or rests to support.
Avoid short clamping contact (A, Fig 10) or clamping
on a minor part diameter (B).
11
Fig 8
Fig 9