23
PM-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 finger
pressure here
should deflect
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).