Specifications

PREVENTIVE MAINTENANCE Document No. DER05022
Effective Date 25 May 07 Page 7 of 10
12. Remove conveyor assembly as follows:
a. Remove four screws securing liquid end seal housing to conveyor, and using jack screws
to separate seal housing from bearing housing, remove seal housing. Discard seal.
b. Position vertical lifting bracket on conveyor (Figure 5022-6), and secure with four screws.
c. Attach a hoist capable of lifting at least 750 pounds to vertical lifting bracket.
d. Slowly lift conveyor from bowl assembly, using care to avoid allowing conveyor to contact
interior of bowl.
e. Orient conveyor horizontally, and place on a support that does not contact tiles.
Figure 5022-6 Attaching Vertical Lifting Bracket To Conveyor
Cleaning, Inspection, and Repair
After removing and disassembling rotating assembly, clean, inspect, and repair as follows:
1. Wash off mud and debris from conveyor and interior and exterior of bowl assembly.
2. Inspect conveyor for missing tiles, distorted or gouged flights, burrs, or other obvious damage.
Replace conveyor if serious defects are found.
3. Inspect conveyor feed nozzles for obvious wear. Rotate 180 degrees and reinstall if damage
is apparent but not severe. Replace nozzles if found highly damaged. To help preserve
dynamic balance, always replace nozzles in pairs that are opposite to each other.
4. Inspect feed accelerator inside conveyor for gouges, fractures, or distortion. If replacement is
required, remove three set screws securing feed accelerator and tap from the solid end to
remove accelerator.
5. Inspect solids discharge wear inserts on bowl assembly for cracks, fractures, or other
damage, and replace if seriously damaged.