Maintenance
Model 3410 Installation, Operation, and Maintenance Manual
61
Group
Instructions
S group
M, L, XL groups
1.
469G
2.
426
3.
Parting slot
1.
426
2.
425
3.
418
6. Remove the upper casing using a sling and hoist or a lift and lifting lugs.
WARNING:
Never attempt to lift the entire pump using lifting lugs.
7. Remove and discard the gaskets.
8. Remove the screws (372U) from the bearing saddle.
9. Place the sling on the shaft (122), and then use a suitable hoist or lift to remove the rotating
element and place it on padded supports.
On pumps with mechanical seals, make sure that the casing rings (103) do not slip and
damage the seals.
10. Mark the coupling position on the shaft (122) and remove the coupling.
Use instructions from the coupling manufacturer in order to remove the coupling.
Remove the bearings
CAUTION:
Never use a hammer to drive the shaft through the bearings. Doing so can cause severe shaft
and bearing damage.
NOTICE:
Do not remove bearings from the shaft unless you need to replace them.
1. Remove the screws (371C) and slide the housings (134) off the bearings (168 and 112)
and the shaft (122).
Make sure not to damage the oil seal (332).
2. Using snap ring pliers in order to remove the retaining ring (361) from the thrust end of the
shaft.
3. Remove the bearings (168 and 112) with a bearing puller.
Group
Instructions
S
Use a two-jaw puller on the end cover (109). Use caution not to damage
the end cover.
