8
8
6.
Remove ball bearing (11) from power rotor (7) by first removing retaining ring (15) from groove in
power rotor (7) shaft. Ball bearing (11) can then be removed with a gear puller or arbor press.
CAUTION
Removal of bearing by force applied to its outer ring could damage bearing.
NOTE: Imo Pump strongly recommends replacing ball bearing each time it’s pressed off power rotor.
7.
Note inlet cover (2) indexing. Remove inlet head
(2) by removing four bolts (3).
8.
Remove O-ring (26) from inlet head (2).
9.
If steel pump, remove break down bushing (19) from inboard cover (4).
PUMP REASSEMBLY:
See seal drawings (Figures 2 and 3) and assembly drawings (Figures 4 and 5)
NOTE: Prior to pump assembly, all parts should be cleaned and inspected for nicks, burrs or gouges.
When ready for assembly, wipe all parts, including bolts, O-rings and seal faces with clean,
lubricating oil or pumped product, if applicable.
CAUTION
Bearing service life could be significantly reduced if bearing is pushed on by its outer race
.
1.
Install ball bearing
(11)
onto shaft (7) using an arbor press and sleeve by pushing on ball bearing (11)
inner race only until ball bearing (11) is positioned against shoulder on power rotor (7).
2.
Install retaining ring (15) in groove in power rotor (7).
3.
Before installing seal (16), insure power rotor (7) shaft is clean and has no burrs or sharp edges.
4.
If seal has elastomeric rubber bellows, (see figure 2)
, apply light film of oil to bore of bellows and install
rotating assembly {16A} on power rotor (7) shaft with a twisting motion by pushing on seal retainer only
with fingers. Do not touch carbon face with fingers. Clean carbon face of seal with alcohol and lint free
cloth. Apply light film of clean lubricating oil to carbon face.
5.
If seal is metal bellows type, (see figure 3)
, apply a light film of oil to rotating seat O-ring of seal and slide
rotating assembly {16A} on power rotor shaft (7). Tighten setscrews {16C} Do not touch carbon seal face
with fingers. Clean carbon face of seal with alcohol and lint free cloth. Apply light film of clean lubricating
oil to carbon face.
6.
Apply light film of clean lubricating oil on seat and O-ring of stationary seat {16B} of mechanical seal
Install stationary seat {16B} into bore in inboard cover (4) with fingers (do not touch seal face with any
tools) so slot in face of seal is facing into inboard cover (4). Be sure stationary seat {16B} is all the way
to bottom of bore in inboard cover (4) and slot in seal mates up to pin (95) in inboard cover (4).
7.
Clean stationary seat of mechanical seal (16A) in inboard cover (4) with alcohol and soft, lint free cloth, and
apply light film of clean lubricating oil to carbon face.
