Chuck Preparation (Three Jaw) - Jet BDB-1340A Operation And Maintenance Instructions

Chuck Preparation (Three Jaw)

Read and understand all
directions for chuck preparation! Failure to
comply may cause serious injury and/or
damage to the lathe!
Note: Before removing the chuck from the
spindle, place a way board across the bedways
under the chuck.
1. Support the chuck while turning three
camlocks 1/4 turn counter-clockwise with
the chuck key which is included in the tool
box.
2. Carefully remove the chuck from the spindle
and place on an adequate work surface.
3. Inspect the camlock studs. Make sure they
have not become cracked or broken during
transit. Clean all parts thoroughly with
solvent. Also clean
camlocks.
4. Cover all chuck jaws and scroll inside the
chuck with #2 lithium tube grease. Cover the
spindle, cam locks, and chuck body with a
light film of Mobil DTE® Oil Heavy Medium.
5. Lift the chuck up to the spindle nose and
press onto the spindle. Tighten in place by
turning the cam locks 1/4 turn clockwise.
The index mark (A, Fig. 4) on the camlock
should be between the two indicator arrows
(B, Fig. 4) when tight. If the index mark is
not between the two arrows, remove the
chuck and adjust the camlock studs by
either turning out one full turn (if cams will
not engage) or turning in one full turn (if
cams turn beyond indicator marks).
6. Install chuck and tighten in place.
the spindle and
8
Figure 4