8
Step 11.
Make sure that the gland is properly centered over the sleeve by turning the shaft by hand
to ensure the seal turns freely. If metal to metal contact is heard inside the seal, proceed
to Seal Removal (Section I.1.1). Complete Steps 1-4.
Step 12.
If metal to metal contact still exists, check the centering of the stuffing box.
I.2
BEGIN PUMP DISASSEMBLY
Note:
Disassembly and assembly steps are for pump types listed in this manual. Part
numbers correspond to assembly drawings for each step except where noted. Refer to Figure
1 for pump identification and model designator definitions. The model of each pump is
identified on the pump nameplate.
Step 1.
De-energize driver, lock and tag “OUT OF SERVICE”. Close isolation valves and drain
piping. Remove shaft coupling. Remove pump coupling hub and key (29).
Step 2.
Remove Chesterton 180 Cartridge mechanical seal (27) per instructions outlined in
Servicing Mechanical Seal (Section I.1).
Step 3.
Remove outboard end cover bolts (2) and remove outboard end cover (15) and gasket (4)
from pump case (1).
Step 4.
Grasp power rotor (13) and pull idler rotors (14) and power rotor (13) from non drive end
rotor housing (10).
CAUTION
DO NOT
permit idlers (14) to drop as they emerge from housing (10).
NOTE:
As rotors slide from housing, wrap the rotors with a sling to prevent accidental dropping and
to assist in holding the rotors in mesh for easy removal.
Step 5.
Remove inboard end cover bolts (2) and remove inboard end cover (17) and gasket (4)
from pump case (1). Removal of inboard end cover (17) will include bushing (18), anti-
rotation pin (23), bushing insert (57), and bushing insert anti-rotation pins (96). Remove
bushing anti-rotation pin (23) from inboard end cover (17). Lightly tap or evenly press
bushing (18) from inboard end cover (17). Remove bushing insert (57) from bushing (18).
Step 6.
Remove plugs (7) from case (1). Remove anti-rotation pins (11) match marking each one
to identify correct installation position and angle. Each pin is fitted to its housing during
assembly. If new housings are to be installed, new anti-rotation pins are required for
correct fitting. Thread a 3/8-16 inch bolt in end of stop pin to assist in removal.
CAUTION
DO NOT
drop housings as they emerge from case.
Step 7.
Slide inboard rotor housing (8) from inboard end of pump case (1). Slide outboard rotor
housing from outboard end of pump case (1). Removal of rotor housing will include
housing adjusting screws (19) and jam nuts (25). Remove Spacer (12) from pump case
(1).
Note:
If a major kit is to be installed it is not necessary to disassemble thrust collar (16), woodruff
key (26) and shim (36) from power rotor (13) or adjusting screws (19) and jam nuts (25) from
rotor housings (8 & 10). All of these items are included in the major kit.
Содержание IMO C324AXFX-12005
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