Section 08
PROPULSION SYSTEM
Sub-Section 02
(JET PUMP)
08-02-10
TYPICAL — MEASURING IMPELLER SHAFT RADIAL PLAY
1. Dial gauge
2. Measure close to threads at shaft end
To check both bearings, proceed the same way
with other shaft end. Position gauge tip on diam-
eter, close to flats on shaft.
TYPICAL — MEASURING IMPELLER SHAFT RADIAL PLAY
1. Dial gauge
2. Measure close to flats at shaft end
Excessive play can come either from worn bear-
ings or impeller shaft or damaged impeller hous-
ing bearing surfaces.
Measuring shaft diameter will determine the de-
fective parts.
Using a micrometer, measure diameter on bear-
ing contact surfaces.
Minimum
shaft diameter
should be 22.24 mm (.876 in).
1. Inspect for wear at the bearing pilot
2. Radial bearing raceway
NOTE:
If shaft is to be replaced, it is recommend-
ed to replace both bearings at the same time. In
addition, it is suggested to replace thrust bearing
and thrust washer.
25,26, Thrust Washer and Thrust
Bearing
Visually inspect thrust washer, thrust bearing and
their contact surface. Check for scoring, pitting,
flaking, discoloration or other evidence of wear.
For best inspection, use a 7X magnifying glass to
check wear pattern.
TYPICAL
1. Worn roller (trunnion worn on end roller)
2. Good roller (cylindrical shape)
3. Look for scoring on retainer
NOTE:
When replacing either washer or bearing,
it is recommended to renew both.
F01J18A
1
2
F01J19A
1
2
F01J1AA
1
2
F01J52A
1
2
3
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Содержание 1997 GSI
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