OM-05724
JD Series
PAGE E - 7
MAINTENANCE AND REPAIR
3. Use the lifting device to support the pump in a
vertical position. Loosen the screws (13) secur
ing the volute casing to the motor assembly (1)
one‐half turn in sequence. The adjusting
screws (74) will remain in place.
4. Use a pair of screwdrivers to separate the motor
assembly from the volute casing, and lay the
pump in a horizontal position on a workbench
or other suitable work surface. Remove the seal
housing O‐ring (101).
Impeller Removal
1. Block impeller rotation as described above,
and remove the impeller screw (10). Remove
the O‐ring (76) and cap (7).
2. Use a suitable puller to remove the impeller. Re
tain the impeller key (6).
NOTE
An alternate method of removing the impeller is to
position two wedges opposite each other behind
the impeller, and tap the wedges carefully in turn
untill the impeller comes free of the shaft.
Lower Seal Removal
All references are to FIGURES E-2 and E-3.
To maintain peak operating efficiency, it is
strongly
recommended that the seal be
replaced if the pump is disassembled. In
the event that the seal will be reused, han
dle seal parts with extreme caution to pre
vent damage. Use care not to contaminate
the precision‐finished faces; even finger
prints on the faces can shorten seal life.
1. Remove the drain/fill plugs and O‐rings (268
and 269), and drain the seal and bearing cavi
ties. Clean and reinstall the plugs and O‐rings.
NOTE
Use caution in Step 2; tension on the seal spring will
be released.
2. Loosen the setscrews in the seal retainer which
secure the rotating portion of the seal (260) to
the shaft.
3. Slide the rotating portion of the seal off the shaft
as a complete unit.
4. Disengage the hardware (417) and pry the oil
housing cover (289) out of the seal housing
(257). Remove the oil housing cover O‐ring
(418).
5. Remove the locking ring (264) and seal clamp
(261), and pull the seal stationary seat and O‐
ring out of the oil housing cover.
NOTE
If the upper seal assembly has leaked, the motor
must be disassembled and the upper seal and low
er bearing (207) must be replaced. Do not reas
semble pump end components at this time if the up
per bearing must be replaced. Refer to
MOTOR
DISASSEMBLY
for upper seal replacement.
6.
Refer to
INSPECTION AND CLEANING
be
fore reassembling the pump end components.
PUMP END REASSEMBLY
Except as noted, all references are to FIGURE
E-1.
Lower Seal Installation
All references are to FIGURES E-2 and E-3.
1. Install the O‐ring (418) in the groove in oil hous
ing cover (289) and lightly lubricate it with oil or
grease. Press the oil housing cover into the seal
housing (257) and secure it with the hardware
(417).
2. Unwrap the seal components. Check that the
seal faces are clean and undamaged. If neces
sary to clean, use a clean tissue and wipe in a
concentric pattern.
Содержание SBM-00192
Страница 8: ...JD Series OM 05724 PAGE B 2 INSTALLATION FIGURE B 1 PUMP DIMENSIONS...
Страница 22: ...JD Series OM 05724 PAGE E 2 MAINTENANCE AND REPAIR SECTIONAL DRAWING PARTSPAGE FIGURE E 1 PUMP MODEL ASSEMBLY...
Страница 24: ...JD Series OM 05724 PAGE E 4 MAINTENANCE AND REPAIR SECTIONAL DRAWING FIGURE E 2 MOTOR ASSEMBLY...
