Specifications

Document No. DER05017 BEARING REPLACEMENT
Page 8 of 12 Effective Date 25 May 07
Liquid End Pillow Block Bearing (Cont’d)
7. Slide assembled pillow block and bearing outer race onto inner race previously installed on
bearing journal.
8. Install new O-ring against shoulder of outboard pillow block cover, slide pillow block cover
onto shaft, and rest against pillow block.
9. Orient inboard pillow block cover so that flat edge is aligned with bottom of pillow block.
10. Apply anti-seize compound to four flat head screws, and install screws to secure inboard
pillow block cover to pillow block. Tighten screws in accordance with
DER05018.
11. Orient outboard pillow block cover so that flat edge is aligned with bottom of pillow block.
12. Apply anti-seize compound to four flat head screws, and install screws to secure outboard
pillow block cover to pillow block and draw bearing into proper position within pillow block.
Tighten screws in accordance with
DER05018.
13. Slide outboard bearing flinger onto Rotodiff / gearbox flange, but leave screw loose.
14. Apply a light coat of grease to surface of bowl shaft where Rotodiff / gearbox flange mounts.
15. Heat flange to 200°F. While handling with insulated gloves, orient notch in flange with key on
liquid bowl head shaft and install flange on shaft. Tighten set screw to secure flange.
16. Slide inboard and outboard pillow block flingers close to pillow block covers, leaving about
1/16-in. clearance, and tighten set screws on both flingers.
17. Install flinger covers, and secure with screws.
18. Using lifting strap and overhead lifting device, orient Rotodiff / gearbox with lines scribed
during removal aligned, and slide Rotodiff onto splined shaft. Insert screws through flange and
into Rotodiff, insert shims at locations marked during removal, and tighten screws.
Solids 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 bearing inner race in a bearing heater or heated clean oil bath, and heat to
approximately 230°F (Figure 5017-6). Do not use a torch to heat the 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 solid 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.