Griswold 811 - Page 27

GRISWOLD PUMP COMPANY Repair Maintenance Page 25
Installation, Operation and Maintenance Manual
Griswold Model 811
Griswold Pump Company Repair Maintenance Page 27
Note:
Do not remove oil slinger (Item 248A) from shaft unless it is damaged.
Note:
When pressing bearings off shaft, use force on inner race only.
Power End Disassembly – L Group Pumps
L group power ends use a clamp ring (Item
253B) instead of a snap ring to retain the thrust
bearing in the bearing housing. Refer to cross-
sectional view in Appendix VIII. Extract
shaft/bearing housing assembly from frame as
with S and M Group pump noted above.
Then…
1. Remove clamp ring by removing clamp
ring screws (Item 236A).
2. Remove bearing housing (Item 134)
from shaft by tapping the shaft with a
rubber mallet, driving the thrust
bearings and shaft assembly through
the housing. Do not remove lab seal.
3. Remove all jackscrews and nuts, items (Item 370D) and (Item 423). Remove bearing
housing o-ring (Item 496).
4. Remove bearing lock nut (Item 136) and lock washer (Item 382).
5. Using an arbor press, remove inboard and outboard bearings. Remove bearing cover.
6. Complete disassembly of bearing frame, if required. Remove oil fill plug (113A), oil
sight glass (408N) and (4) oil mist/grease plugs (408H). Remove oil cooler inlet and
outlet plugs, (408L) and (408M). Remove frame foot attachment bolts (370F).
Power End Disassembly – XL Group Pumps
XL Group pumps are similar to S and M Group Pumps except that the thrust bearing is held into
the bearing housing with a bearing cover (Item
109A). See cross-sectional view of XL Frame
pumps in Appendix VIII. Extract shaft/bearing
housing assembly from frame as with S and M
Group pump noted above. Then…..
1. Remove bearing cover bolts (371C) and
bearing cover (109A). Discard o-ring
(Item 496). DO NOT REMOVE
LABYRINTH SEAL (Item 332A).
2. Using an arbor press, remove inboard
bearing (Item 168A).
3. Remove bearing housing (Item 134), by
sliding housing over the bearing and
FIGURE 18
L GROUP
BEARING REMOVAL
FIGURE 19
XL GROUP BEARING REMOVAL