Flowserve RIS Seal - Manual (Page 4)

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3.2 Check squareness of the shaft and end shoulder or shaft sleeve if
one is used.
The end of the sleeve that mates with the rotating assembly 15
(or the shaft shoulder if a sleeve is not used) must be square to
within 0.076 mm (0.003 inch) total indicator reading. See Figure 3.
3.3 Enlarge the seal cavity opening or replace the appropriate pump
parts as described by the seal assembly drawing.
3.3.1 Some pumps only require replacing the packed gland
stuffing box with a new 46 cover supplied with the seal.
Use the appropriate gaskets supplied with the seal because
they may be different than the original gaskets.
3.3.2 Other pumps require machining of the packed gland
stuffing box, or casing, or rear casing liner to allow 46
cover to be attached. Machine parts as described in the
seal assembley drawing. Use the appropriate gaskets
supplied as described in (3.3.1.) above.
3.3.3 Rubber lined pumps may require enlarging the hole in
the center of the inner rubber liner. Cut the liner to the
dimensions shown on the seal assembly drawing.
Use appropriate rubber repair compound to cover any
metal that is exposed when cutting the rubber liner.
3.4 Assemble and install 46 cover or modified pump parts as applicable.
3.4.1 If a new 46 cover is supplied, install 139 end plate
(leaving 40 bolts loose at this time), 10 adjusting stud,
101 clamp ring and 9 jam nuts.
Note: A standard O-ring groove is incorporated in the cover for 3.750
and smaller sizes, and 139 end plate is not used. On some pumps,
Squareness of the Shaft
Figure 3
0.07 mm
(0.003 inch)
Maximum