Section 6
MAINTENANCE
44
difference in indicator readings of 180º apart or the
gap between the hub and straight edge when the
alternate method is used. Vertical parallel offset is
corrected by the addition or removal of equal
amounts of shims under the motor feet while hori-
zontal parallel offset is corrected by sliding the
motor sideways.
Angular alignment is indicated by the difference in
indicator readings or by the difference in caliper
measurements (X) (A - B = X). Vertical angular
alignment is achieved by placing shims under the
front or rear motor feet while horizontal angular
alignment is achieved by sliding the motor side-
ways.
Figure 6-8 Parallel/ Angular Alignment
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