4
3
Shrink disk drive collar installation
A shrink disc drive collar may be supplied as a sub-assembly loosely
installed on the non-wetted end of the seal sleeve or separately
packaged with the seal. The shrink disc bolting should be in place,
but loose. Note that shrink disc drive collars function by creating
high friction. The internal parts and bolts of the shrink disc drive
are lightly lubricated from the factory. No additional lubrication on
the shrink disc should be used during assembly.
3.1
Visually verify the internal parts and bolts of the shrink disc are lightly lubricated.
3.2
During seal installation ensure that the sleeve bore and shaft are free of grease in the area of
the shrink disc.
3.3
Verify that the seal setting device is installed and the sleeve is held in final set position.
CAUTION:
Do not tighten the mounting bolts before the shrink disc is mounted.
3.4
If packaged separately, slide the shrink disc sub-assembly over the end of the seal sleeve,
until the inner ring contacts the shoulder on the sleeve
3.4.1
If the shrink disc does not install easily, confirm the bolts are loose and the
surfaces are clean and free of burrs or debris.
CAUTION:
Do not use oil or grease to aid in installation!
3.5
Install the entire cartridge seal and shrink disc assembly over the equipment shaft following the
Cartridge Mount section of the seal installation instructions.
3.5.1
The sleeve O-rings may be lightly lubricated with a Flowserve supplied or
approved grease.
CAUTION:
Do not use grease or oil on the sleeve or shaft to aid in installation!
3.5.2
The seal sleeve should install easily over the equipment shaft, if resistance is felt:
• Clean and removed any burrs, nicks, scratches, etc. which could impede
the sleeve installation on the shaft
• Measure the shaft at several places and compare measurements against
the shaft diameter and tolerance specified on the seal assembly drawing
3.6
Ensure the outer rings of the shrink disc are a perpendicular to the shaft and parallel to each
other. Adjust them as parallel as possible by finger tightening the mounting bolts.
3.7
Evenly tighten 3 or 4 equally spaced mounting bolts to 25% of final torque value as shown on
the seal assembly drawing. This step properly sets the collar on the tapers of the inner ring.
Check if outer rings are parallel and adjust as necessary.
3.8
Hand tighten remaining bolts
3.9
Mark a location and begin torquing all mounting bolts gradually and in sequence around the
collar (not in a diametrically opposite sequence). Increase the tightening torque roughly 25%
of the final torque per pass; several passes will be required. Adjust as necessary as you
proceed to keep the outer rings as parallel as possible. Tighten until the final mounting bolt
torque is achieved.
3.10 Check each mounting bolt to ensure that all bolts are tightened to the required torque.
3.11 Loosen setting plate attachment bolts and rotate or slide setting plates clear of drive collar.
3.12 Secure setting plate attachment bolts so that the setting plates will not contact any rotating
parts of the seal during operation.
Figure 7
