Goulds Pumps 3180-86 - IOM - Manual (Page 97)

Install the dynamic seal (S, M, L, and XL)
WARNING:
Do not use packing that contains asbestos, it may cause personal injury.
This procedure only applies to the 3180 and 3185 pumps.
1. Apply a liberal amount of a anti-galling compound, such as Loctite Nickel Anti-seize, to the shaft
sleeve (126) bore and shaft (122).
2. Install the sleeve on the shaft.
3. Perform these steps based on your dynamic seal configuration:
If your dynamic seal is
a...
Then...
Diaphragm seal 1. Place an O-ring in the groove at the inner diameter of the follower
(385) and slide the assembly to the back of the sleeve.
2. Place a gland plate over the follower (385) and slide the diaphragm
(146) over the sleeve to the face of the seat.
3. Install four gland studs (353) in the stuffing box cover (184).
4. Use the eye bolt, strap, and sling as required.
5. Install the cover on the bearing frame (228) with eight hex bolts
(370B).
6. Fit the sleeve O-ring (412U) on the shaft sleeve.
7. Install the repeller (262) tight against the sleeve and make sure that the
O-ring stays in the groove.
Packed box 1. Slide the throttle bushing (125) to the back of the sleeve.
2. Install two gland studs (353) in the stuffing box cover (184).
3. Install the cover on the bearing frame (228) with eight hex bolts
(370B).
4. Use the eye bolt, strap, and sling as required.
5. Fit the repeller O-ring (412U) on the shaft sleeve and install the
repeller (262) tight against the sleeve.
6. Make sure that the O-ring stays in the groove.
4. Keep the repeller and sleeve assembly shouldered to the shaft, and adjust the rotating element until
the repeller-to-cover clearance is approximately 0.015 in. (0.4 mm).
5. Fit the gasket (264) on the backplate (444).
6. Install the backplate on the cover and tighten the nuts (357J) on the backplate studs (265A).
7. Perform these steps based on your seal:
If your dynamic seal is
a...
Then...
Diaphragm seal 1. Slide the diaphragm (146) over the gland studs (353) and up against
the face of the stuffing box.
2. Slide the gland plate (107) over the gland studs (353) and up against
the diaphragm (146).
3. Thread the gland nuts (355) on and tighten evenly in a crossing
pattern.
4. Install the impeller and set the clearance per the instructions in the
Commissioning, Start-up, Operations, and Shut-down chapter.
5. Slide the follower (385) through the gland (107) until the step on the
seal is aligned with the exposed face of the gland.
Maintenance
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual 95