Specifications

Document No. DER05025 CONVEYOR BEARING REPLACEMENT

Page 4 of 4 Effective Date 28 Mar 08

CLEANING, INSPECTION, AND REPAIR (CONT’D)

8. Replace any component that cannot be easily repaired. Replace all shaft seals and bearings.

9. Place all cleaned components in clean plastic bags to prevent contamination.

INSTALLATION

This procedure describes installation of the liquid end conveyor bearing. If the gearbox bearing is

found to be loose, the gearbox must be replaced or rebuilt as well (refer to

DER05037).

To install the liquid end conveyor bearing, proceed as follows:

1. Install a new shaft seal into bearing housing (Figure 5025-2), and then insert and seat bearing

into housing.

2. Install a new shaft seal in seal cover, and assemble cover on bearing housing. Secure parts

together with hex head screws.

3. Install assembled bearing housing on conveyor, and secure with screws.

CAUTION! CLEARANCE BETWEEN CONVEYOR FLIGHTS AND BOWL LINING

IS ONLY 1.5 MM. IN THE FOLLOWING STEP, USE EXTREME CARE WHEN

LOWERING CONVEYOR INTO BOWL ASSEMBLY TO AVOID CONTACTING

BOWL LINING AS THIS COULD DAMAGE CONVEYOR FLIGHTS.

4. Hoist conveyor into a vertical position (Figure 5025-1), and insert into vertical bowl assembly.

5. Hoist liquid bowl head, and lower onto conveyor using care to avoid damaging bearing as

conveyor bearing journal enters inner bearing race. Secure liquid bowl head to bowl assembly

with screws.

6. Hoist assembled rotating assembly, and position horizontally on a cradle suitable for

supporting its weight.

7. Install and fill gearbox in accordance with the gearbox installation procedures in

DER05037.

8. Close case cover, and secure with screws, tightening from center of cover outward in both

directions.

9. Install and secure belt guard over motor and bowl assembly sheaves.

10. Connect feed piping to feed component flange.

11. Apply electric power, and start up centrifuge (refer to

DER04098). Carefully monitor

performance, and check for any unusual noise.

The content of this document is subject to change at any time. Information provided does not cover all details or variations possible

with DERRICK equipment, nor does it cover every contingency that may be met in conjunction with installation, operation,

maintenance, or troubleshooting of the equipment. Should additional information be required, or should situations arise that are not

covered by this manual, bring the matter to the attention of your local DERRICK representative or the Service Department at

DERRICK Corporation in Buffalo, New York.