GRISWOLD PUMP COMPANY Repair Maintenance Page 26
Installation, Operation and Maintenance Manual
Griswold Model 811
Griswold Pump Company Repair Maintenance Page 28
When pressing bearings off shaft, use force on inner race only.
removing housing from impeller end of shaft.
4. Remove bearing locknut (Item 136) and lock washer (Item 382).
5. Press outboard bearing (112) off of shaft.
Parts Inspection
ALL PARTS MUST BE INSPECTED BEFORE REASSEMBLY TO INSURE THAT THE
REBUILT PUMP WILL PERFORM PROPERLY. EACH PART SHOULD BE EXAMINED
FOR SIGNS OF FATIGUE, EXCESSIVE WEAR AND CRACKS. REPLACE ANY WORN
PARTS IF THEY DO NOT MEET THE FOLLOWING TOLERANCE STANDARDS.
Bearing Frame and Foot - Visually inspect for cracks, roughness, rust or scale. Check
machined surfaces for pitting or erosion.
Bearing Frame - Inspect tapped connections for dirt. Clean and chase threads as necessary.
Remove all loose or foreign material. Inspect lubrication passages to be sure that they are open.
Inspect inboard bearing frame bore (bearing fit). Tolerances shown in Appendix.
Shaft and Sleeve - Visually inspect. Check for grooves or pitting. Check bearing fits and shaft
runout. Replace shaft and sleeve if worn, or if tolerances are greater than 0.002”.
Casing - Visually inspect for signs of wear, corrosion, or pitting. The casing should be replaced
if wear exceeds 1/8" deep. Check gasket surface for signs of corrosion or irregularities.
Impeller - Visually inspect impeller vanes for wear, erosion or corrosion damage. If vanes are
worn more than 1/8" deep, or if they are bent, the impeller should be replaced.
Frame Adapter - Visually inspect for cracks, warpage or corrosion damage. Replace if any of
these signs appear.
Bearing Housing- Visually inspect for signs of wear or corrosion. Check for cracks and/ or pits.
Check tolerances as noted in Appendix III. Replace if worn or out of tolerance.
Seal Chamber/Stuffing Box Cover - Visually inspect for cracks, pitting, erosion or corrosion.
Check face of cover for wear, scoring or grooves. Replace if worn more than 1/8" deep.
Shaft – Check shaft for evidence of corrosion or wear. Check shaft diameters in bearing fit
areas. See Appendix III for dimensions and tolerances. Check shaft for straightness. Maximum
TIR at sleeve journal and coupling journal should not exceed 0.002 inches.
To Next Page
Loading...