Goulds Pumps VRS - IOM - Manual (Page 31)

REASSEMBLY
REASSEMBLY OF POWER END
1. Clean shaft (122) thoroughly, checking for nicks or
worn areas.
2. Press the outboard seal (332) into the thrust housing
(134A), positioning the seal so that the lip points
upward when installed in the pump. Press the inboard
seal (333) into the inboard seal plate (119B),
positioning the seal so that the lip points downward
when installed in the pump. Lubricate both seals with a
thin coat of grease.
3. Heat the inboard bearing (168C) evenly using an oven,
bearing heater, or hot clean oil bath. The use of a torch
is not recommended. Heat the bearing to 230 degrees F
to 250 degrees F (110 degrees C to 121 degrees C).
Slide the bearing onto the shaft from the drive end
until the bearing shoulder is firmly against the shaft
shoulder. Hold in place until bearing cools and grips
the shaft.
4. Heat the outboard bearing (112C) evenly using an
oven, bearing heater, or hot clean oil bath. The use of a
torch is not recommended. Heat the bearing to 230
degrees F to 250 degrees F (110 degrees C to 121
degrees C). Slide the bearing onto the shaft until the
bearing shoulder is firmly against the shaft shoulder.
Hold in place until bearing cools and grips the shaft.
5. Position bearing lockwasher (382) and locknut (136)
against the bearing shoulder and tighten firmly. Bend
‘tang’ of lockwasher into locknut slot after the locknut
has been tightened.
6. Hand pack the inboard (168C) and outboard bearings
(112C) with recommended grease (see Maintenance
section). Mound a small amount of grease above the
bearing to ensure sufficient lubrication.
7. Insert thrust housing (134A) over the outboard bearing
(112C).
8. Insert bearing locking clip (361) in thrust housing
(134A).
9. Install O-ring (496A) on thrust housing (134A) and
lubricate.
10. Install outboard deflector (123) by sliding it down the
shaft until it is approximately 0.06 in (1.5 mm) from
the thrust housing (134A).
11. Insert thrust housing and shaft assembly into bearing
frame (228). Install thrust housing locking capscrews
(356B), thrust housing adjusting capscrews (9956) and
nuts (415A). Adjust all hardware so that the thrust
housing (134A) bottoms out in bearing frame (228).
12. Install O-ring (412) on inboard seal plate (119B). Slide
inboard seal plate and seal up shaft and mount to
bearing housing (228).
13. Install inboard deflector (123A) by sliding it up the
shaft until it is approximately 0.06 in (1.5 mm) from
the inboard seal plate (119B).
REASSEMBLY OF WET END
1. Slide column pipe (192) up shaft (122) and attach to
bearing frame (228) with capscrews (371M) using the
orientation marks made during disassembly.
2. Attach gland liner (600T) into gland half casing
(100D).
3. Attach gland half casing (100D) to column pipe (192)
using the orientation marks made during disassembly.
4. Remove protective tape from shaft (122) threads.
Install impeller washer (199) on shaft (122). Thread
the impeller (101) onto the shaft until it is snug against
the shaft washer (199). Hold the drive end of the shaft
and firmly tighten the impeller.
5. Move the impeller (101) by means of the thrust
housing adjusting capscrews (9956) toward the drive
end as far as possible.
6. Install the suction liner (600R) into the suction half
casing (100A).
7. Attach the suction half casing (100A) and liner to the
gland half casing (100D).
8. Adjust the impeller using the thrust housing adjusting
screws (9956) so that the impeller turns freely.
9. Assemble the discharge pipe assembly (195) to the
casing discharge (100A/D) and bearing frame, if
supplied.
10. Install strainer and/or tailpipe onto suction half casing
(100A), if supplied.
11. Install unit into sump, being careful not to damage the
strainer, if supplied.
12. Connect piping to pump following procedures in the
‘Installation’ section.
13. Use the impeller clearance setting procedure on page
18 to set proper impeller clearance.
REASSEMBLY OF DRIVE
1. Mount drive onto pump.
2. Align the coupling (direct drive) or sheaves (belt
drive) as outlined previously.
3. Replace the coupling guard (direct drive) or belt guard
(belt drive).
VRS IOM - 5/08
25
6