Specifications

Document No. DER05022 PREVENTIVE MAINTENANCE
Page 8 of 10 Effective Date 25 May 07
Cleaning, Inspection, and Repair (Cont’d)
6. Inspect bowl interior and exterior for gouges, scratches, or other damage that may affect
performance.
7. Check pillow block bearings and conveyor bearings for looseness, noise, or rubbing. Replace
any defective bearings in accordance with procedure in
DER05017.
Reassembly and Installation
Reassembly and installation of the rotating assembly are basically the reverse of removal.
Reassemble and install rotating assembly as follows:
1. Prepare and install conveyor into bowl assembly as follows:
a. Apply a light coat of grease to bearing seat and seal surfaces of conveyor to facilitate
installation.
b. With bowl in vertical position on vertical stand, hoist conveyor above bowl and carefully
lower into bowl.
c. Remove vertical lifting bracket from conveyor.
d. Install new seal in seal housing (Figure 5022-5), apply light coat of grease to seal, and
install seal housing onto bearing housing. Apply anti-seize compound to screws, insert
screws through holes of seal housing and tighten into bearing housing in accordance with
DER05018.
2. Install new O-ring in groove of liquid bowl head, apply a light coat of grease to O-ring, and
install liquid bowl head onto bowl. Orient bowl head so that alignment marks correspond, and
secure liquid bowl head to bowl with screws. Tighten screws in accordance with
DER05018.
3. Remove all nicks and/or burrs from pillow blocks and mating surfaces. Clean all surfaces of
any protective coating applied after removal.
4. Reinstall shims in proper locations, as noted during removal.
5. Clean alignment pins before reinstalling, and apply anti-seize compound.
6. Orient rotating assembly to horizontal position, and carefully lower into case until about 1/2”
above base.
7. Insert bolts through pillow blocks, and start threads into base. Do not tighten bolts.
8. Lower rotating assembly fully onto base.
9. Insert alignment pins through pillow blocks, and lightly tap into holes to fully align pillow blocks
with base mounting holes.
10. Tighten bolts in accordance with applicable specification in
DER05018 to secure pillow blocks
to base.
11. Install gearbox as follows:
a. Insert new O-ring into groove in face of gearbox, and attach lifting strap on gearbox. Using
an overhead lifting device, CAREFULLY position gearbox to engage external spline of
splined shaft with internal spline of gearbox.