Smithy GN1300 - Manual (Page 39)

Adjusting Gibs
The Granite 1300 models have a series of straight gibs. The gibs are found on the
carriage, the cross-slide table, compound angle toolpost and the tailstock. These gibs
should be adjusted periodically to maintain accuracy and smooth operation.
Carriage Assembly-Saddle
Adjust the gibs on the saddle assembly using the procedure below.
Step1: Loosen the four jam nuts on the back side of the saddle with the 6” adjustable
wrench that was shipped with your machine.
Step 2: Back out the gib adjusting screws found on the back side of the saddle two turns
with the 4 mm allen wrench.
Step 3: Using the 4 mm Allen wrench, tighten each of the four gib adjustment screws
until they are lightly touching the gib.
Step 4: Back the gib adjustment screws out 1/8 to 1/4 turn.
Step 5: With the adjustment screws now set at roughly the same position, make the
fine adjustments on each individual screw. Starting with one of the inner screws, slowly
tighten the screw while moving the carriage assembly by turning the leadscrew
handwheel until you feel slight resistance.
! NOTICE !
Always make sure your machine is well lubricated before
adjusting the gibs.
Do not apply excessive force.
Figure 5.17 Carriage Gibs
CAUTION
Granite 1300 Series Operator’s Manual
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