Section VI - Servicing
Belt Drive Removal Instructions
) Remove all bushing cap screws.
2) Install cap screws into threaded jack
holes.
3) Tighten all jack screws alternately
and evenly, beginning with the screw
farthest from the bushing saw slot,
until bushing grip is released. Slide
sheave and bushing assembly off the
shaft.
Caution!
Excessive screw torque may cause
damage to either the bushing and/or
product. Uneven pressure on jack
screws may also damage the bushing
flange making removal difficult without
damage to the product.
Belt Drive Alignment Instructions
Straight Edge Alignment Procedure
Horizontal Angular (Shafts in same
horizontal plane but not parallel)
) To check, use straightedge or string
near sheave centers.
2) To correct, loosen motor mounting
bolts and rotate motor until all four
points touch straightedge.
Vertical Angular (Shafts in same vertical
plane but not parallel)
) To check, place straightedge /4
radius from the outside diameter of
both sheaves as shown:
a. Repeat on opposite side of shaft.
b. Straightedge should touch four
points indicated in each position.
2) To correct, loosen sheave so it slides
easily on shaft until all four points
touch straightedge. Tighten sheave in
position. IMPORTANT: Sheave should
be mounted as close to bearing as
possible to reduce overhung load
on bearing. Relocate equipment, if
necessary
Quincy Compressor-QGB
™
4
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