
MSS
TM
Series
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Figure 61 -
Inspecting Bearing Carrier
Figure 60 -
Measuring Balance Disc
IF DISC IS WORN MORE THAN
0.508 mm (0.020”) FROM
ORIGINAL THICKNESS,
REPLACE BALANCE DISC
Figure 59 - Inspecting Balance Disc
FRONT
REAR
SIDE
FRONT
REAR
3.
Inspect the bearing carrier for unusual wear
or scoring and replace if necessary.
2.
Measure the balance disc outer hub thick
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ness. Refer to the
Balance Disc Wear Chart
for wear limit specifications. The maximum
acceptable balance disc wear is 0.508 mm
(0.020”). If the balance disc wear exceeds
its wear limit, it must be replaced
Balance Disc Wear Chart
Balance
Disc Model
Original
Thickness
When New
Wear Limit
- 0.508 mm
(0.020")
MSS-15
through
MSS-75
13.5 mm
(0.53”)
13.0 mm
(0.51”)
Balance Disc Inspection
1.
Inspect the surfaces of the balance disc
for unusual wear. The surfaces may have
some wear but should be smooth.
Pump Overhaul Continued