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INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
20
SUMMIT PUMP MODEL 2175
7. Lightly lube the shaft and rotor drive ring and slide the bearing cover, seal and
gasket (360A) onto the shaft as a single unit. Align the work “TOP” on the cover with
“TOP” on the bearing housing. Bolt (371C) the cover in place.
8. Place a small amount of O ring lubricant on the inside of the bearing frame (228) at
the bearing housing (134A) and inboard seats, on the O ring (496), and on the
inboard oil seal. Slide the shaft assembly as far as possible into the bearing frame.
The word, “TOP” on the flange of the bearing housing lines up with the top of the
bearing frame when the bearing housing is properly installed. With the bearing
housing O ring in place in the groove on the housing, insert the bearing housing bolts
into the bearing housing and screw them about ½” into the frame to hold the shaft.
9. Install the inboard labyrinth seal (333A) (See
Appendix E. Maintenance Instructions
)
onto the inboard bearing cover (119A) with the expulsion port at the 6 O’clock
position. Press it in as described in Step 6 above.
10. Lightly lube the shaft and rotor drive ring and slide the inboard bearing cover into
place. Bolt (370J) to bearing frame (228).
11. Slide the deflector (123) onto the shaft with the flat side facing in until it rests against
the bearing frame (228).
12. Determine bearing end play by performing the following:
a. Clamp the dial indicator to the pump with the button resting against the end of the
shaft.
b. Push the shaft back and forth as far as possible.
Total end play must be a minimum of 0.001” and a maximum of 0.005”. If under
0.001”, add coupling end bearing end cover gaskets made from 0.006” thick Manila
paper. If over 0.005”, remove gaskets.
13. Install and position the coupling hub at the scribe mark on the shaft.
14. Bolt the bearing frame (228) to the frame adapter (108).
15. Install shaft sleeve (126) and stuffing box cover (184):
a. For packed pumps, slide the shaft sleeve on the shaft with the O ring in place.
Use a sleeve to tap the stuffing box bushing (125) into place. Lift the stuffing box
cover into place at the impeller end of the shaft. Guide the stuffing box cover
over the shaft and sleeve to prevent any contact to these surfaces. Bolt (370)
the stuffing box cover to the frame adapter (108).
b. For mechanical seal pumps, read the manufacturer’s assembly instructions.
Certain seals have a stationary seat in the stuffing box cover (184) and the
rotating portion slides onto the sleeve prior to installing the stuffing box cover.
Refer to STUFFING BOX section.
16. Install stuffing box cover (184). Install gasket (351) onto cover. Use lubricant to aid
in holding in place during assembly.
17. Install impeller key (178). Lubricate shaft with oil or copper base ant seize lubricant.
18. Install impeller (101) impeller screw (198), making sure to use a new “O” ring (412B).
Use a spanner or strap wrench to hold shut and when tightening the impeller screw.
19. Pump power unit is ready to reinstall or spares storage.
20. Install new suction side plate “O” ring (412C) in side plate (176). Install new side
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