Grizzly VS MILLING MACHINE G0669X - Manual (Page 44)

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g0669X precision 10" x 54" Vs Milling Machine
Drive belt
tensioning
power is transferred from the motor to the spindle
with a heavy-duty drive belt. With normal use, this
belt will gradually stretch over time. When it does,
perform the following procedures to re-tension it.
tools Needed Qty
phillips screwdriver ........................................... 1
Wrench 13mm ................................................... 1
Wrench 17mm.................................................... 1
to check/tension the drive belt:
1. disConneCt the MiLL FroM poWer!
2. remove the belt access panel from the right
side of the head (see figure 59).
figure 59. access panel removed to access
drive belt.
drive Belt
3. Check the belt tension. When moderate pres-
sure is applied to the belt between the pulleys
(see
figure 60), there should be approxi-
mately 1 ⁄
2
" of belt deflection.
EjaaZn
9Z[aZXi^dc
EjaaZn
figure 60. Checking for belt deflection.
4. Loosen the four motor mount hex bolts (see
figure 61).
5. push the motor back until there is the correct
amount of belt deflection, then tighten the
adjustment hex bolt in and against the motor
mounting plate to secure the setting.
6. re-tighten the motor mount hex bolts.
7. re-install the drive belt access panel before
beginning milling operations.
figure 61. Motor mount and drive belt tension
adjustment hex bolts.
adjustment
hex Bolt
Motor Mount
hex Bolt
(1 of 4)