Bearing Frame; Reassembly; Liquid End - ITT Goulds Pumps 3642 Serie Instrucciones De Instalación, Operación Y Mantenimiento

NOTICE: EXERCISE CAUTION WHEN HANDLING
HOT IMPELLER.
7. Using two screwdrivers, pry off rotating section of
mechanical seal assembly (383). discard. See
Figure 7.
Figure 7
8. Remove adapter bolts (371) and adapter (108),
pulling with it the mechanical seal stationary seat.
9.Push out the mechanical seal stationary seat from
the motor side of the adapter. Discard.

Bearing Frame:

1. Remove bearing cover (109).
2. Remove retaining ring (361).
3. Remove shaft assembly from frame.
4. If worn or damaged, remove lip seals (138, 139)
from bearing frame (228) and bearing cover (109).
6. Use bearing puller or arbor press to remove ball
bearings (112, 168).

REASSEMBLY

• All parts should be cleaned before assembly.
• Refer to parts list for description of replacement items.
Specify pump index number when ordering parts.
Bearing Frame:
1. Replace lip seals if removed.
2. Replace ball bearings if loose, rough or noisy when
rotated.
3. Check shaft (122) for runout. Maximum permissible
is 0.002" (0.051 mm) TIR.
6

Liquid End:

1. Inspect shaft removing any debris or burrs.
2. Treat shaft threads with LOCQUIC
equivalent, following manufacturer's instructions
carefully.
NOTICE: MECHANICAL SEAL MUST BE REPLACED
WHENEVER SEAL HAS BEEN REMOVED.
FOLLOW SEAL MANUFACTURER'S
INSTRUCTIONS CAREFULLY.
3. Stationary seal seat may be dipped in water or
glycerin to ease installation. Place stationary seal
seat squarely into adapter seal bore. Cover the
polished face of the seat with a thin piece of
cardboard or paper towel. Press seat firmly into
bore using a round piece of plastic or wood that
disperses the force over the entire seal face.
4. Place adapter, concave face pointing up, over
motor shaft and lower it onto the motor adapter.
Exercise care in that the motor shaft does not
dislodge or damage seal seat.
5. Fully and squarely install the rotary assembly of seal
against the stationary seat.
6. Apply LOCTITE ® #262 or equivalent, to shaft
threads and install impeller on shaft by turning
CLOCKWISE until it bottoms on the motor shaft.
7. Apply LOCTITE ® #262 or equivalent, to impeller nut
and tighten to 20 lbs. ft. (27 N•m).
8. Replace casing gasket.
9. Replace casing bolts, tightening to 37 lbs. ft. (50
N•m) in a crossing sequence.
10. Check reassembled unit for binding by rotating
shaft.
11. If rubbing exists, loosen casing bolts and proceed
with tightening sequence again.
12. On close-coupled units, replace motor end plug or
cover and motor hold-down bolts.
13. On frame-mounted units, replace coupling, spacer,
coupling guard and frame hold-down bolts.
NOTICE: ALWAYS RECHECK BOTH COUPLING
ALIGNMENTS AFTER MAKING ANY
ADJUSTMENTS.
14. Refer to "COUPLING ALIGNMENT" section of
manual to realign shaft.
15. Assembly is complete.
® Primer "T", or