Disassemble coupling. Note arrangement of bolts, washers (forged , links), and-nuts as they must be replaced In the some order. Tie a string or wire through one bolt hole of each laminated ring to retain the dialed position of Individual discs.
Inspect both driving and driven shafts and flanges, making sure they ore free from burrs. Be sure the keys fit the shafts and flanges properly.
Mount flanges on shafts. they do not go on by light topping with a soft lead hammer, they should be heated in oil and quickly positioned on the shafts.
Bring equipment into position, making sure the distance between flanges Is equal to the "C" dimension in the table.
Reassemble coupling. Use sectional view on page 21 for reference.
Align this coupling carefully. The boner the initial alignment, the more capacity the coupling has to take core of s sub sequent operational misalignment.
DIAL INDICATOR METHOD INDICATOR MOUNTING TO BE WORKED OUT TO SUIT CONDITIONS AT HAND
TO CHECK ANGULAR MISALIGNMENT (figure 2) mount Indicator (as shown on flange) on compressor side of coupling with stem on face of right flange ROTATE EQUIPMENT noting maximum and minimum indicator reading. Move equipment as necessary to reduce the total indicator reading to .002" or less for each inch of diameter at the indicator stem.
TO CHECK PARALLEL MISALIGNMENT (figure 3) set indicator stem on outer surface of flange. Rotate equipment noting maximum and minimum indicator reading. Move equipment as necessary to reduce indicator reading to .902" or less for each inch of diameter at indicator stem, taking care not to disturb the setting of Step 1. 3. Repeat steps I and 2 as necessary. 4. This coupling should be rotated several revolutions to make sure no "endwise creep' in connected shafts is measured. 5. Tighten all bolts to 25 ft/lbs. for 5/16" bolts or 43 ft/lbs for 3/8" bolts. After several hours of operation recheck tightness of bolts.
NOTE: It has been found that a magnetic base such as the Tiny-Titan mode by Enco Manufacturing Company to fit on grooved or straight surfaces used with a dial indicator 0-30 thousandths, plus or works out very well for various coupling sizes.
INSTRUCTIONS:
Prepare sparate sheet for each complete coupling aligned.
Check squares to indicate components being aligned.
Scribe motor shaft in resting position then run motor and observe the thrust clearance in the compressor.
After complete alignment: when setting in center member check clearance with a feeler gouge making sure the ending clearance is within one to two thousandths. Caution: make sure when bolting coupling you are not pulling on compressor shaft.
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