S SERIES PUMPS
OM-07089
MAINTENANCE AND REPAIR
PAGE E - 10
ing the pump is not practical, lay the pump on its
side and secure it to prevent rolling.
2.38”
1.5”
1.5” DIA.
DRILL
THROUGH
BOTH
SIDES
1.0” UNC THREAD X 2.5” LONG
SHOULDER PATTERN WELDLESS
DROP‐FORGED EYE BOLT, NUTS
AND FLAT WASHERS
MAKE FROM 0.50”
FLAME CUT PLATE
1.06” DIA.
DRILL THROUGH
TYP. ALL
POINTS
4.5”
5.5”
4.75”
3.0”
.38”
1.25”
Figure E-4. Lifting Brackets With Eyes
Remove two of the capscrews, lockwashers and
hex nuts (14, 15 and 69) from opposite sides of the
motor housing. Secure the brackets to the pump
using two 1-1/4-16 UNC by 7-inch long caps
crews (not supplied) and the lockwashers and
nuts (14 and 15).
Remove the lifting eyes (68) and pressure relief
valve and piping (62, 63, and 64). Attach chains
and a spreader bar to the eyes in the lifting brack
ets.
Use caution not to damage the terminal
housing and cable assembly when invert
ing the pump for disassembly. Use wood
blocks to support and level the pump while
performing maintenance, and leave the lift
ing device attached if possible.
Use a lifting device of suitable capacity to raise the
pump
just high enough
to be rotated to the in
verted position. Rest the pump securely on blocks
positioned across the discharge flange. Be careful
not to damage the terminal housing (65) or cable
while in this position.
Suction Head And Wear Ring Removal
(Figure E-1)
Remove the hardware (28 and 29) securing the
suction head (4) to the first stage diffuser (8). Re
move the suction head, and remove and discard
the suction head gasket (6).
Inspect the wear ring (5) for excessive wear or
scoring. If replacement is required,use a small bit
to drill two holes horizontally through the wear ring,
180
apart. Use a chisel to complete the cuts
through the wear ring, and remove it from the suc
tion head.
Be careful
not to damage the suction
head bore.
Use caution not to damage the suction
head when removing the wear ring.
First Stage Impeller Removal
(Figure E-1)
Immobilize the first stage impeller (7) by wedging a
steel rod between the vanes. Remove the impeller
nut and washer (26 and 27). Install two 3/8-16
UNC by 2-inch long capscrews in the tapped
holes in the impeller, and use a suitable puller to re
move the impeller from the shaft.
First Stage Diffuser And Vane Plate Removal
(Figure E-1)
Disengage the hardware (2, 14 and 15) and sepa
rate the first stage diffuser (8), vane plate (9), and
gasket (24) from the second stage diffuser (23).
Remove the socket head capscrews (10) and sep
arate the vane plate from the first stage diffuser.
Inspect the wear ring (5) for excessive wear or
scoring. If replacement is required, remove the
hardware (28 and 29), and use an arbor (or hydrau
lic) press to remove the wear ring.
If no further disassembly is required, proceed to
the appropriate areas in
PUMP END REASSEMB
LY
.
