I-120
GH Pump 120 ā 16.02.EN
23
D. REASSEMBLY OF PUMP. Read this entire section
before reassembling the pump. The instructions that
follow are an aid for properly trained personnel to
assemble your Carver Pump. Refer to Figures 9 and 10
to locate the pump parts by item number and parts list
Table 9. If a specific sectional assembly drawing exists
for a particular job then that drawing should be referred
to for assembly. Refer to Table 5 for recommended
torque values. Assemble the pump in accordance with
accepted rules of engineering practice. Coat individual
components with a suitable lubricant before assembling.
Assembly of unit should be performed on a clean, flat
surface. During reassembly, install parts as applicable.
CAUTION
During reassembly, install new O-rings, ball
bearings, packing, mechanical seals and
gaskets if disturbed from position. O-rings, ball
bearings, packing, mechanical seals and
gaskets may have been damaged during
disassembly.
While installing ball bearings, DO NOT
unnecessarily hit ball bearings. If damage to
ball bearings occurs, replace damaged ball
bearings with new ball bearings.
After 12,500 hours of service, replace the ball
bearings.
NOTE
To ensure proper seating of ball bearing parts,
rotate the ball bearing while clamping the parts.
All parts should be thoroughly cleaned or
replaced with new ones if necessary. All
sealing faces should be perfectly clean, but do
not scratch or alter surface finish on seal faces.
Variations do exist between configurations, not
all parts described in the text may be on your
configuration. Review what variations your
pumping unit has before starting. Parts marked
with * are options or vary by pump.
For close-coupled units start reassembly with
step 7.
NOTE
Replace bearing (*16 or *18), once removed
from shaft (*6). If ball bearing replacement is
not possible and bearing is in good condition,
clean bearing in accordance with Section X,
Paragraph A.
1. If removed, hand pack ball bearings (*16 and/or
*18) half full with the proper grease, refer to
Section X, Paragraph A. Install ball bearings
onto shaft (*6) with open sides of ball bearings
facing away from larger diameter of shaft.
2. Install bearing lockwasher (*69) and bearing
locknut (*22) on inboard end of shaft. Crimp
tang of bearing lockwasher into one of the
grooves provided in the bearing locknut.
3. Install the shaft (*6) in the bearing frame (*19).
4. Install bearing cap (*35) on bearing frame (*19)
securing it to the bearing frame with capscrews
(*608). Refer to Table 5 for recommended
torque values.
5. Lubricate pump by inserting grease into grease
zerks (*76), refer to Section X, Paragraph A.
6. If removed, install the slinger (40) on shaft (*6)
next to motor adaptor (71).
7. Lubricate and install sleeve O-ring (89X) onto
shaft (*6).
NOTE
Refer to mechanical seal vendor instructions for
complete seal installation procedure.
8. As applicable, the stationary element of
mechanical seal (*90) should be installed in the
gland (17) before the gland is installed, refer to
Section XI, Paragraph F for procedures. Install
gland on shaft (*6), slide back towards slinger
(40).
9. If mechanical seal (*90) was removed lubricate
outside of shaft sleeve (14) to facilitate
mounting of mechanical seal. Install mechanical
seal on shaft sleeve. Rotating element of
mechanical seal if not being replaced will be on
shaft sleeve.
10. Coat shaft sleeve (14) bore with DOW 111 and
install shaft sleeve over O-ring (89) onto shaft
(6).
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