Emerson 2130 RBM Consultant Pro Reference Manual page 73

Laser alignment analyzer and fixtures
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Before using, inspect the soft mount base to ensure that all eight ball bearings are
tight and free of play. Screw the mounting posts into each hole in the mounting
base and tighten with the supplied tightener (Phillips screwdriver) or with a 1/8
inch Allen wrench (not supplied with kit). Select the chain tightener of choice
(refer to "Attaching the B821007 Carbon Steel Mounting Base" on page 2-19 for
more information). The hex nut mechanism provides a more stable, versatile
mounting while the knurled nut is more convenient. The chain assembly should
be slipped into the mounting base so that the nylon nuts rest against the surface of
the shaft (or coupling). Hold the chain out away from the base and slip the cylinder
into its cradle. To ensure maximum tightening range, each nut should be flush
with the end of the tightening bolt.
Place the base on the shaft (or coupling); a link of chain is slipped into the T-slot to
secure the base to the shaft. The soft-mount base does not have a chain pickup like
the B821007 Carbon Steel Mounting Base. After slipping a chain link into the T-
slot, tighten the bolt at the end of the chain. Each mounting base can be installed
on either end and the chain bolts placed on either side of the shaft. Take up any
slack in the chain using the chain clip (if necessary) and mount the laser fixtures to
the posts as described in the section "Attaching the B821007 Carbon Steel
Mounting Base" on page 2-19. The following photographs show the base mounted
to a shaft. Grasping the bracket (not the laser fixtures) rotate the soft-mount base
around the shaft (or coupling).
Using Alternative Mounting Brackets
Caution!
Grasping the laser fixtures could result in less accurate, unrepeatable data. This
is especially important when using the Dual Pass method where the data is auto-
matically acquired as one fixture passes by the other.
Caution!
Coupling run-out will severely affect the accuracy of the soft mount brackets.
Coupling run-out should be measured and subtracted from the reading during
use.
2-53

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