Page 22 - Goodyear2011PTMaintenanceManual

22
Poly-V ® Belt
INSTALLATION GUIDE
CHECK ALIGNMENT
Proper alignment is essential for long Poly-V® belt life. Check belt
alignment whenever you maintain or replace belts or whenever
you remove or install sheaves. Limit misalignment to 1/4 degree
or approximately 1/16" per foot of center distance.
The illustration above shows the correct way to check alignment
between two sheaves with a straight edge. Check both front and
back alignment. Straight edge should touch sheaves at the four
points indicated.
Non-parallel shafts or sheaves not aligned axially can cause
angular misalignment.
Laser Alignment Tool
With our Laser Alignment Tool, you can quickly align drive
components to improve effciency and reduce costly
maintenance. Much easier to use than a straight edge, it
attaches in seconds and when the highly visible sight line lies
within the target openings, the pulley/sprockets are aligned.
9
Taper-Lock Bushing
HOW TO INSTALL A SHEAVE MADE
WITH A TAPER-LOCK HUB
Look at the bushing and the hub. Each has a set of half-holes. The
threaded holes in the hub are the mates to the non-threaded holes
in the bushing.
Insert the bushing in the hub and slide it onto the shaft. Align a
threaded hub hole with non-threaded bushing hole.
Start the setscrews into the holes that are threaded in the hub only.
Do not tighten the setscrews yet.
Align both edges of the sheave with the edges of its mating sheave.
Tighten the screws alternately and evenly. This procedure will
wedge the bushing inward and cause it to contract evenly and grip
the shaft.
HOW TO REMOVE A SHEAVE MADE
WITH A TAPER-LOCK HUB
Remove all the setscrews.
Place two of the setscrews in the holes that are threaded in the
bushing only.
Turn the setscrews alternately and evenly. This movement will
unlock the grip and permit easy removal of the assembly with no
shock to the bearings or machinery.
7
8