Chapter 6 Cooling Water
System
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(2)
Inspect the mechanical seal and relace
if
the spring
is
damaged, or the seal
is
corroded. Also replace the
mechanical seal
if
there
is
considerable water leakĀ·
age during operation.
Cooling water leakage
less than
3 cc/h
(3) Make sure the ball bearings rotate smoothly. Replace
if there
is
excessive play.
2-4
Sea water pump reassembly
(1)
When
replacing
the
mechanical
seal,
coat
the
No.1101
oil
seal and pressure fit Coat the sliding surface with a
good quality silicon oil, taking suffident care not to
cause any scratches.
(2} When replacing the oil seal, coat with grease and in-
sert.
(3}
Mount
the
pump shaft, ball bearing
and
gear assembly
to the pump unit and fit the bearing stop ring.
Be
sure not to forget the water O-ring when doing this.
NOTE:
Coat the shaft with grease.
(4)
After inserting the mechanical seal stop ring, mount
the wear plate and impeller.
(5)
Mount the 0-ring side cover.
NOTE : Replace the
0.
ring.
2-5
Current characteristics
90
1
80
=
:
~
...,,....
70
l
/
-
60
C
E
/
---
50
~
~
~
40
0
lL
30
:
/
~
:
/~
-
~
/
~
;;
20
::
,,,,
=
10
!
:
0 0
500
1000 1500
2000
2500
3000
3500
Speed (rpm)
6-4
--
1
4000
Printed in
]a.pa.n
HINSHI-H!l.009
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