7
7
CAUTION
ATTENTION
When removing inboard cover (4) from pump in step 1, below, DO NOT pull out rotors (7 & 8)
They may drop to floor and be damaged. If rotors start to come out, hold them in place.
1.
Remove bolts (3) from inboard cover (4) and then remove inboard cover (4) from pump housing (1).
2.
Remove stationary seat {16B} of seal (16), on pumps with seals, and O-ring (31) from inboard cover (4).
CAUTION
ATTENTION
In next step, the rotors will be removed from pump. They will come out as a unit. Use care to
support rotor set as it is withdrawn from housing so the idlers will not be dropped on floor
3.
Remove power rotor (7) and idlers (8) by grasping shaft of power rotor and easing it out of housing (1). Set
rotors aside.
4.
For Elastomeric Bellows Type Seals (see Fig 2 below) – Slide rotating assembly {16A} of mechanical seal
off of power rotor (7) with rotating motion.
5.
For Metal Bellows Type Seals (see Fig 3 below) – Loosen set screw {16C}and slide rotating assembly
{16A} from power rotor (7).
.062
METAL BELLOWS MECHANICAL SEAL
Figure 3 Figure 2
NOTE: If only replacing seals, pump disassembly is complete. For mechanical seal installation,
complete steps 3 through 12 in reassembly procedure. If remainder of pump needs to be disassembled,
proceed below.
