Sherwood Pump Catalog

T ECH GU I DES 22000 and 30000 Series Technical Guide Assembly/Disassembly Instructions The following assembly/disassembly procedures apply to all G22000/G3000 Series pumps. Pump numbers can be found stamped into the cover plate of the pump. Disassembly: A. Remove the bolts (1) and lockwashers (2) from the cover (3). B. Remove the cover and quad ring (4). Note the direction of the impeller blades to ensure proper replacement of the impeller during the assembly procedure. The impeller (5) can be removed with impeller puller 23631, 25105, or a 3/4”- 16 bolt (by screwing the bolt into the threaded impeller, the impeller is jacked out of the pump). Caution: The pin (8) might fall out from its place when removing the cam. C. The cam or cam halves (6), cam anti-rotation pin, and wearplate (7) can be removed. D. Using external snap ring pliers, remove the retaining ring (9) from the shaft. E. Slide the mechanical seal (10) off of the shaft. F. Remove the bolts (11) and lockwashers holding the body (12) to the housing (13). G. Slide the housing off of the shaft and body assembly. H. Press the seal seat (14) out of the housing. I. When applicable, remove the drive gear assembly: while supporting the drive gear (15), remove the bolt (16), lockwasher (17) and thrust washer (18) from the shaft. Pull the gear off of the tapered shaft using a bearing or wheel puller. J. Using internal snap ring pliers, remove the retaining ring (19) from the body. For the G22012-01, G22012X, G3001-01, G3001-02 and G3001X, remove the bearing shield (20) from the body. K. Press the bearing and shaft assembly (21) out of the body. L. Remove the lip seal (22) from the body. M. Inspect the shaft for grooving of the lip seal area and heavy fretting of the spline portion that drives the impeller. Inspect the bearings for loss of grease, corrosion and rough rotation. If the shaft or bearings exhibit such a wear, replace the entire shaft and bearing assembly (21) listed on page 51. 49 13 8 10/14 16 11 12 22 21 20 19 23 17 18 15 9 4 3 6 5 7 2 1