GRISWOLD PUMP COMPANY Repair Maintenance Page 28
Installation, Operation and Maintenance Manual
Griswold Model 811
Griswold Pump Company Repair Maintenance Page 30
L frame uses a duplex angular contact bearing. Be sure bearing(s) are installed in
correct order, i.e. back-to-back. The bearing model numbers should face away from
each other. If a press is used, be sure that force is applied to inner race only.
Install bearing lockwasher and locknut as described
for S and M Group pumps on previous page.
When pressing bearings on shaft, use force on inner race only.
When pressing bearings on shaft, use force on inner race only.
When pressing bearings on shaft, use force on inner race only.
2. Install bearing cover (Item 253B) over shaft.
3. Install outboard bearings (Item 112).
4. Install inboard bearing (Item 168A).
5. Lightly lubricate the outside of the outboard bearing (Item 112), the bearing housing bore
and the coupling end of the shaft. Slide the bearing housing (Item 134) over the shaft and
over the outboard bearing. DO NOT FORCE.
6. Install bearing cover bolts (Item 236A). Tighten bolts to 55 in.-lbs. for lubricated threads
or 83 in.-lbs. for dry threads. Check that shaft rotates freely.
7. Install new bearing housing o-ring (Item 496).
8. Lightly lubricate outside surface of bearing housing and ID of bearing frame bore. Install
shaft and bearing assembly into frame. Check that shaft rotates freely.
9. Install cap screws (Item 370C) into bearing frame (Item 228). Install jack bolts (Item
370D) and lock nuts (Item 423). Hand tighten evenly.
Power End Assembly – XL Frame Pumps
Replace all plugs that had been removed during disassembly. Replace sight glass. Use thread
sealant.
1. Install outboard bearing (Item 112) on shaft.
2. Install bearing lock washer (Item 382) on shaft. Place tang of lock washer in shaft
keyway under bearing. Thread locknut (Item 136) onto shaft and tighten until snug. Bend
a tang of the lock washer over a flat on the lock nut.
3. Lightly lubricate the outside of the outboard bearing and the bearing housing bore. Slide
bearing housing over shaft and onto the outboard bearing. DO NOT FORCE.
4. Lightly lubricate coupling end of shaft. Install bearing cover (Item 109C) and gasket
(Item 360C). Tighten bearing cover bolts (Item 371C) to 12 ft.-lbs. for dry threads or 9
ft.-lbs. for lubricated threads.
5. Install inboard bearing (Item 168A) on shaft.
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