5
NOTE: When applying power,
be sure the pump is restrained
from turning by holding the
pump at the motor housing,
or
by clamping it in a
holding fixture.
CAUTION: Always keep hands
away from the pump cutter
area after the circuit breaker
is reconnected.
Replacing Bearings:
1. Drain all oil from motor
chamber as described.
2. Remove cutters and impeller
as described earlier.
3. Remove bolts (32) that
hold motor housing (37) to
bearing housing (31). Remove
bolts (12) that hold bearing
housing (31) to volute (13).
Remove screws (14) holding
seal plate (26) to bearing
housing (31).
4. Remove rotating assembly
(35) (rotor, shaft and impeller)
from pump case and place
horizontally on bench. With
hardwood block, tap end of
impeller to loosen from shaft.
5. Use bearing puller to remove
bearings. Replace with new
bearings. Press only on inner
race of bearing when
replacing. Pressing on outer
race can damage the bearing.
Bearings are standard size
that can be obtained from
any bearing supply house
or can be obtained from
HYDROMATIC factory.
6. Thoroughly clean all castings
before replacing bearings.
Examine all O-rings for nicks
before reusing.
7. Use Locktite on socket head
locking screw in end of shaft.
8. Completely reassemble, air test
and fill with oil as described
under REPLACING SEALS.
9. Always check all leads with
high voltage or with Megger
for grounds before operating
the pump.
1
2
3
5
4
6
7
8
9
10
11
12
13
44
15
16
17
18
19
21
20
22
43
41
42
40
39
38
10
37
36
35
34
14
33
32
31
30
29
28
27
26
25
24
23