Specifications

BEARING REPLACEMENT Document No. DER05017
Effective Date 25 May 07 Page 7 of 12
Cleaning, Inspection, and Repair
1. Clean all components with a suitable cleaner/degreasing agent, and blow dry with filtered
compressed air. Remove any corrosion to facilitate inspection.
2. Inspect bowl heads for scratches, nicks, burrs, or deformation that may affect suitability for
returning to service. Blend out any minor surface defects. Replace bowl head if shaft is
obviously deformed or serious flaws are found that render the bowl head unserviceable.
3. Test fit a new bearing inner race on the main bearing journals of both bowl heads. If the
journal is undersize, the inner race will slide easily onto the journal. Replace the bowl head if
journal is undersize.
4. Inspect pillow block covers, flingers, and flinger covers for corrosion, distortion, nicks, cracks,
burrs, fractures, or other defects. Repair any minor defects.
5. Replace any component that cannot be easily repaired. Replace all O-rings, seals, and
bearings.
6. Place all cleaned components in clean plastic bags to prevent contamination.
Installation
The procedure describes installation of the liquid end pillow block bearing first, followed by the
solids end procedure. However, either pillow block bearing may be installed first on its respective
bowl head.
Liquid End Pillow Block Bearing
WARNING! IN THE FOLLOWING STEP, USE EITHER A BEARING HEATER OR
A CLEAN HEATED OIL BATH TO HEAT BEARING INNER RACE. DO NOT USE
A TORCH, AS THIS WILL DAMAGE THE BEARING.
1. Place inner race of liquid end pillow block bearing in a bearing heater or clean heated oil bath,
and heat to approximately 230°F (Figure 5017-6). Do not use a torch to heat inner race, as
this will damage the race.
2. Wearing insulated gloves, remove heated inner race from bearing heater, and immediately
slide onto bearing journal until seated against bowl head shoulder. Allow inner race to cool
until unmovable on liquid bowl head.
3. Slide inboard pillow block flinger onto shaft, followed by pillow block cover. Do not tighten
flinger set screw at this time.
4. Position bearing outer race and rollers into chamfer of pillow block. Using a suitable tool that
contacts only the outer bearing race, carefully tap outer race into pillow block until about 1/8-
inch below the surface of the pillow block.
5. Install new O-ring against shoulder of inboard pillow block cover, and slide pillow block cover
onto shaft.
6. Apply sufficient quantity of the bearing grease listed in customer specification to completely
cover bearing rollers.