Sherwood Pump Catalog

27000 Series Technical Guide 7 15 16 22 23 20 21 18 6 8 9 19 10 17 14 12 13 3 5 4 11 2 1 Result of different methods of drive and mounting. Pump model numbers can be found stamped into the cover plate of the pump. Disassembly: A. Remove the three bolts (1) and lockwashers (2) from the pump cover (3). Note the direction of the impeller blades upon removal. Remove the impeller (4) using the appropriate 24412 or 25106 M16 x 1.5 impeller puller. Remove the o-ring (5) from the housing (6). B. Remove the pulley hub (7) from the shaft using a bearing puller. C. Remove the cam screw (8), cam screw o-ring (9), and cam (10). The internal wear plate (11) will drop out. For the P2701-P2706 models, the retaining ring (12), washer (13) and seal seat (14) can then removed. D. From the ball bearing end, the internal snap ring (15) must be removed. The shaft bearing assembly (16) is pressed out of the body from the impeller end of the housing. For pump models P2708-P2710, the mechanical seal seat (14) is now loose inside of the housing and can be removed. The mechanical seal (17) may now be pressed from the bearing side of the housing (6). E. Removal of the port adapters (18/19) is not necessary under normal conditions. If needed, first note the angle of each port to be able to reassemble to the correct orientation. Remove the bolts (20) and lockwashers (21) from the port adapter bracket (22). Remove and inspect the o-rings (23) for damage. F. Inspect the shaft for 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 (16) listed below. Warning: The new water seal kit 25115- S HW is designed to be used with newer pump designs P2708-01, P2708X, P2709-01, and P2710-01) or upgraded older pump designs using the new 25100- S HW shaft/bearing assembly that facilitates the new metal sleeve water seal. The 25115- S HW metal sleeve water seal cannot be used with the previous shaft and bearing assemblies. Doing so will cause damage to the shaft and the seal. Identifying the proper shaft for use with the 25115- S HW mechanical seal kit: 25100- S HW shaft/bearing assemblies do NOT have a retaining ring groove on the shaft in the area between the impeller and the first bearing (the bearing on the impeller end of the pump). These shaft and bearing assemblies can be used with the 25115- SHW. If a retaining ring exists between the impeller and the first bearing, do not use the 25115- S HW mechanical seal kit. 43 T ECH GU I DES