SPX S2045 - Pump Disassembly with Type 4 Double Seal

Waukesha Cherry-Burrell Maintenance
12/2010 95-03080 Page 35
Pump Disassembly with
Type 4 Double Seal
The Type 4 Seal is essentially two Type 1 seals assembled back
to back in a chamber which bolts to the backplate in place of the
stationary seat retainer. Except for the additional components,
(e.g. chamber, seals) Type 1 and Type 4 components are inter-
changeable. See Figure 37.
CAUTION:
Handle the impeller/backplate assembly with
care to prevent damage to seal components.
Figure 37 - Type 4 Seal Components
Table 15: Callouts for Figure 37
A. Impeller F. O-ring L. Rotary Seal S. Stationary Seal
B. Backplate G. Washer M. O-ring T. L-gasket
C. L-gasket H. Spring Retainer N. NPT Port U. Seat Retainer
D. Stationary Seal J. Spring P. Flush Housing V. Hex Head Screw (4)
E. Rotary Seal K. Washer R. O-ring W. Set Screw
1. Shut off product flow to the pump and relieve any product
pressure.
2. Shut off and lock out power to the pump.
3. Disconnect the suction and discharge pipe fittings.
4. Remove the casing clamp and casing. Slide the o-ring off the
ba
ckplate.
5. Remove the impeller retaine
r bo
lt and shaft o-ring.
NOTE: The retainer bolt has standard right hand threads.