Jet 691050, Operating Instructions And Parts Manual

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10
When lifting using the ring, the machine may
tend to tip forward. If you wish, you can
minimize this tipping by rigging a support sling
over the front of the machine. Be careful when
doing this, to prevent the sling from damaging
any components on the front of the machine.
Be sure to steady the mill to prevent it from
spinning.
6. Lift machine off pallet no higher than
necessary to clear the hold-down hardware,
then slide pallet out of the way. Do NOT get
hands or feet underneath machine when
removing pallet.
7. Put machine base over the hold-down system
where the machine will be spotted.
8. When the mill is over its anchors, level the mill
using shims under the corners needing them.
The machinist’s level used for leveling should
be placed on the table. The table is the
reference surface for both side-to-side and
fore-and-aft leveling. Be certain you get it level
in BOTH directions.
Mill must be supported
equally under all four corners. Failure to
comply may cause the column to twist and
put a bind in the table ways.
9. When the machine is level, secure base to
anchoring system.
Figure 7-2: alternate lift - sling location
7.4 Completing assembly
Before attempting to raise mill
head, familiarize yourself with instructions in
sect. 10.6 , for procedures to safely raise and
set up the mill head.
1. Loosen the four hexagonal nuts (see A, Figure
10-4) about one-quarter (1/4) turn each
counter-clockwise, just enough to allow
rotation of the head.
2. Apply upward pressure on motor by hand to
relieve pressure on worm mechanism, while
using supplied wrench to turn worm shaft (B,
Figure 10-4). Raise head to upright position.
3. Tighten nuts (A, Figure 10-4); not torqued at
this time, just snug. Before operating mill,
follow procedures in sect. 10.6 to verify angle
settings and properly tighten the four nuts.
4. Using mineral spirits or other cleaning solvent,
clean all of the rust proofing from where it may
have been applied. This is important; moving
the table or any other components before
removing the rust proofing will only put rust
proofing where you don’t want it. (Do not use
gasoline, paint thinner, or lacquer thinner -
these will damage painted surfaces.)
5. Lubricate exposed ways, then move each unit
(table and ram) to the opposite limit stop, and
clean and lubricate the newly exposed ways.
Loosen bolts to unlock ram and move it
forward and backward to the full length in
order to clean and lubricate.
6. Cover all machined surfaces with a film of light
machine tool oil to inhibit rust.
Some of the following steps may have already
been performed on the machine. If so, skip the
instructions related to those particular steps.
Otherwise, perform them in the order listed. Refer
to Figures 6-1 and 9-1 to help locate items.
7. Install handles on the table longitudinal and
cross-feed cranks. Use a wrench on the flats
to tighten them.
8. Remove any rust proofing from drawbar (O,
Figure 9-1) and its washer, and place drawbar
with washer installed into spindle center
through top of machine.
9. Slide fine feed handwheel (J, Figure 9-1) over
handwheel hub and push it back until its roll
pin engages hole in the hub and handwheel is
flush with hub surface.
10. Place coarse feed handle (F, Figure 9-1) on
feed shaft and tap it lightly until its roll pin
engages a hole in the hub. Tighten set screw
to secure handle.