MSD
TM
Series
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45
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Pump Assembly Continued
15. Install the sheet metal coupling guards.
16.
Tighten mounting bolts to “Inlet Housing
Bolts” torque value found in the
Fastener
Torque Specifications
section of this manu-
al.
Figure 85 - Sheet Metal Coupling Guard
Installation
Sag Test
The
Sag Test
is used to measure the amount
of deflection that a dial indicator bracket will un
-
dergo at a given distance under its own weight.
This determines the sag tolerance of a given
dial indicator set up.
1.
Assemble a dial indicator set up similar to
the one which will be used during the align
-
ment procedure and place it on a length of
suitable metal stock. Set the indicator to
zero.
Figure 86 - Sag Test Dial Indicator Set Up
METALIC STOCK
DIAL INDICATOR
SET TO ZERO
Figure 87 - Recording Sag Test Negative
Indicator Reading
METALIC STOCK
NEGATIVE READING
WEIGHT OF SET UP
CAUSING SAG
2.
Without disturbing the indicator set up, invert
the entire set up 180° (turn it upside down).
3.
Record the amount of deflection measured
on the indicator. It will read as a negative
number
.