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Adjusting the Clamping Mechanism
The clamps are pre-set at the factory and should
not
need
any
adjustment.
adjustment is needed remove the stud (A, Fig.
24). Loosen the locking handle and slide the
headstock, tailstock or tool rest to the edge of
the bed and slightly turn the hex nut (B, Fig. 24).
Slide back into position and test the handle to
make sure it securely locks.
Changing the Belt and Bearings
Changing the belt and bearings can be a difficult
task, and should be performed by a JET
authorized repair station. Remove the headstock
and take it into a repair station for servicing.
1. Disconnect the machine from the power
source!
2. Loosen the locking handle (C, Fig. 25), and
lift up on the tensioning handle (D, Fig. 25)
to remove tension from the poly v-belt.
3. Open the door (E, Fig. 25), and remove the
belt (F, Fig. 25) from the lower pulley.
4. Loosen the two setscrews in the handwheel
(G, Fig. 25) and remove.
5. Loosen the socket head cap screw enough
to unthread the clamping nut (H, Fig. 25).
6. Loosen the two setscrews in the right hand
pulley (I, Fig. 25).
7. Loosen the setscrew in the collar (J, Fig. 26)
8. Use a wood dowel, or aluminum stock to
knock the spindle towards the tailstock. Use
a material that is softer than the spindle so
you do not mushroom the end of the spindle.
Only go far enough to remove the belt from
the spindle; see Figure 26.
9. Now you can replace the belt or bearings.
There are two bearings, #5 and 10, that can
be seen in "Headstock Assembly" on page
24.
10. To reassemble, reverse the procedure.
Note: When reinstalling the clamping nut,
thread it onto the spindle until its snug. Then
back it off slightly and tighten the socket
head cap screw.
However,
if
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