IMO *G3D-187, Instruction Manual

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14. Install key (016) and coupling hub on power rotor (011).
15. Install drain plugs if removed during disassembly.
16. If applicable, connect tubing (042, Figure 20) ensuring that check valve (039) is installed in original
position
17. Connect pump to mounting bracket and coupling. Align pump with driver as described in CA-1
manual.
MECHANICAL SEALS
Mechanical seals installed in Series G3D pumps are Type 2, Figures 2 and 3: Type 8-1, Figures 4 and 5:
Type 21, Figures 6 and 7: Type 8B3, Figure 8: Type 9B3, Figure 9; Type BX, Figure 10; and Flexibox and
Sealol, not illustrated. Disassembly and assembly procedures for mechanical seals are as follows:
DISASSEMBLY
Stationary Assembly:
A.
(Figures 2, 4, 6 and Flexibox) Slide stationary assembly, seat (1) and gasket (2) off power rotor shaft.
B. (Figures 3, 5, 7, 8, 9, 10 and Sealol) Stationary assembly, seat (1) and O-ring (2), is removed with
spacer (014) from power rotor shaft. Remove stationary assembly from spacer (014).
Rotating Assembly:
A.
(Figures 2, 3, 6, 7 and Flexibox) Slide rotating assembly (3) of power rotor shaft. NOTE: Use a piece
of shim stock for removal of Figure 11 to avoid damage to power rotor.
B.
(Figures 4, 5, 8, 9, 10 and Sealol) Loosen setscrews and slide rotating assembly off power rotor shaft.
ASSEMBLY
Rotating Assembly:
The rotating assembly (3) is normally packaged as an assembly for ease of installation. Ensure that all O-
rings are properly positioned in assembly prior to installation. Coat all parts of the seal with oil prior to
assembly on power rotor shaft. Refer to mechanical seal drawings, Figures 2 through 10, and mechanical
seal assembly drawings, Figures 11 through 17, for applicable assembly procedures.
A.
(Figures 2, 3, 6, 7 and Flexibox) Slide rotating assembly (3) on power rotor shaft next to piston (012,
Figures 11 and 13), truarc ring or spacer (035, Figures 12 and 14).
NOTE: Use a piece of shim stock under split sleeve of Flexibox seal to avoid damage to power rotor.
B.
Remove and discard retaining clips (4) prior to final tightening of setscrews (3F).
C.
(Figures 2 through 10) Install mechanical seal seat (1) and O-ring (2) in spacer (014, Figures 13, 15
and 16). Ensure that spring pin is properly positioned to engage slot in seal seat. Slide spacer (014) on
power rotor. Install inner truarc ring (013) in power rotor groove. Press ball bearing (015) on power
rotor, pressing only on inner race of ball bearing (015). Install outer truarc ring (013) in power rotor
groove.