23PM-1440BV v3 2020-10 Copyright © 2020 Quality Machine Tools, LLC
DRIVE BELT ADJUSTMENT
Double-groove pulleys connect the motor to the gearbox,
Figure 4-17. Belt tension will not usually require attention. If
adjustment is necessary, loosen the three hex-head bolts se-
curing the motor frame to the headstock, Figure 4-17. Do not
loosen the bolts attaching the motor to its frame.
Firm nger
pressure here
should deect
the Vee belt
about 1/4"
Figure 4-17 Test belt tension
Figure 4-18 Motor frame bolts
Two of three; the third bolt is at the pulley end of the
motor (open the external gear cover for access).
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