Carver Pump RSA - Disassembly of Pump with Standard Sleeve Bearing

RS – Multi-Stage, I-280
Centrifugal Pump 280 – 16.03.EN
29
B. DISASSEMBLY OF PUMP WITH STANDARD
SLEEVE BEARING. The instructions that follow are an
aid for properly trained personnel to service your Carver
Pump. Refer to Figures 13 and 15 to locate the pump
parts by item number and parts list. If a specific
sectional assembly drawing exists for a particular job
then that drawing should be referred to for service work.
Read this entire section before disassembling the pump.
NOTE
Parts marked with * are options that vary by
pumping unit and bearing frame size.
ATEX and CE require bearing isolators and
metal splash guards. Other customers may use
oils seals and plastic splash guards. These
items fit in the same positions.
Refer to Section II for Safety precautions before
disassembling pump.
After completion of dismantling, all parts should be
thoroughly cleaned or replaced by new ones if
necessary. All gaskets and sealing faces should be
perfectly clean. When cutting new gaskets, make sure
they are exactly the same thickness as the old ones.
CAUTION
Use a hoist with adequate lifting capacity; refer
to Section VII, Paragraph B.
When pump is handling hazardous fluid,
extreme care must be taken to ensure safety of
personnel when attempting to drain pump and
piping before disconnecting the pumping unit.
Suitable protection devices should be used
and/or protective clothing should be worn.
NOTE
Pump should be dismantled from the discharge
end. Mark or number each component while
dismantling according to sequence.
1. Complete Section XI, Paragraph A before
continuing with disassembly.
2. With pump in a horizontal position clamp down
suction case (9) foot to steady pump during
disassembly.
3. Support interstage casings (111) before
dismantling to prevent from being dropped while
discharge case (1) is removed.
4. Starting on the discharge side (Outboard)
remove gland nuts (615) and gland washers
(646) from the outboard bearing cap stud (631).
Remove outboard bearing cap (37A) from the
discharge case (1). Remove the gland O-ring
(89H) from the outboard bearing cap.
5. Remove male connector (410) body from the
seal gland (17A).
6. Remove hex nuts (615) and gland washer (646)
from studs (630) on seal gland (17A). Slide back
the seal gland from suction case (9) to release
mechanical seal (90) tension.
7. Remove tie bolt nuts (616) and tie bolt washers
(645). Remove tie bolts (173) connecting the
discharge case (1) and the suction case (9).
8. Remove jam nuts (614) and shaft washer (28)
from shaft (6).
CAUTION
Use a hoist with adequate lifting capacity for
lifting the discharge case (1).
NOTE
The last stage bushing (63X), O-ring (89A), and
the last stage diffuser (5X) with wear ring (7X)
still intact will come off with the discharge case.
Match mark impellers, sleeves, keys, interstage
casings and casings according to sequence.
9. Remove discharge case (1) with sleeve bearing
(63Y) still intact.
10. Remove the last stage diffuser (5X) with wear
ring and last stage bushing (63X) still intact.
Remove O-ring (89A) from the last stage
bushing.
NOTE
Refer to Table 5, Sleeve Bearing Dimensions to
determine if replacement of sleeve bearing
(63Y) is required.
IMPORTANT: Check for shims between
impellers and spacer sleeves.
11. If replacing sleeve bearing (63Y), remove
sleeve bearing from discharge case (1).
12. Remove sleeve (14X) from shaft.
13. Remove impeller (2X) and impeller key (32A)
from shaft.
14. Remove interstage casing (111) with casing O-
ring (89D), diffuser (5A), diffuser bushing (63)