Specifications

Document No. DER05017 BEARING REPLACEMENT
Page 2 of 12 Effective Date 25 May 07
Liquid End Pillow Block Bearing(Cont’d)
4. Remove Rotodiff / gearbox from liquid bowl head (Figure 5017-1) as follows:
a. Scribe a line across Rotodiff / gearbox and flange to ensure correct positioning upon
installation. Using a 14mm hex wrench, remove six screws securing Rotodiff / gearbox to
flange.
b. To ensure correct placement of shim(s), mark location of shim(s) between flange and
Rotodiff / gearbox. Install two 3/8”-16 jack screws into flange clearance holes that are 180°
apart. Using a 9/16” box wrench, alternately turn both jack screws a few revolutions at a
time to begin separating Rotodiff / gearbox from flange.
c. To support unit during remainder of removal procedure, place lifting strap around Rotodiff /
gearbox and attach strap to overhead lifting device. Fully separate unit from flange by
alternately turning jack screws until unit is fully detached.
d. With Rotodiff / gearbox supported by lifting strap and overhead lifting device,
CAREFULLY slide unit outward until free of splined shaft. Place Rotodiff / gearbox in a
plastic bag to prevent contamination.
Step 4a - Rotodiff / Gearbox Attaching Screws Step 4b - Using Jack Screws to Separate
Rotodiff / Gearbox From Flange
Step 4c - Using Sling to Support Rotodiff / Gearbox During Removal
Figure 5017-1 Rotodiff / Gearbox Removal