Kohler 8E - Seawater Pump; Seawater Outlet

TP-6277 10/03 Scheduled Maintenance 21
3.5.5 Seawater Pump
The seawater pump is located on the engine end of the
generator set. Check and change the seawater pump
impeller at the interval specified in the service schedule.
Follow the instructions included with the impeller kit. If
the instructions are not included with the kit, use the
following procedure:
Impeller Inspection and Replacement Procedure:
1. Place the generator set start/stop switch in the
STOP position.
2. Disconnect the power to the battery charger, if
equipped.
3. Disconnect the generator set engine starting
battery(ies), negative (−) lead first.
4. Close the seacock.
5. Remove the seawater pump coverplate. See
Figure 3-11.
6. Remove the impeller.
7. Inspect the impeller for damaged, cracked, broken,
missing or flattened vanes. The impeller vanes
should be straight and flexible. See Figure 3-12.
Replace the impeller if it is damaged.
1
2
3
4
5
6
78
9
10
1. Seawater pump
2. Coverplate
3. Gasket
4. Impeller
5. Bearing
6. Housing
7. Pulley
8. Drive shaft
9. Washer
10. Nut
11. Mechanical seal,
if equipped
TP-6053
11
Figure 3-11 Seawater Pump, Typical
1
2
3
1. Flattened vane
2. Crack
3. Broken vane
TP-6053
Figure 3-12 Worn Impeller
8. Lubricate the impeller with soapy water before
installation.
9. Install the impeller.
Note: During installation push and rotate the
impeller in the same direction as the engine
rotation until it is thoroughly seated in the
impeller housing.
10. Inspect the coverplate and gasket for corrosion
and/or damage. Replace components as
necessary.
11. Lubricate the gasket with silicon grease and attach
the gasket and coverplate to the seawater pump
housing.
12. Open the seacock.
13. Check that the generator start/stop switch is in the
STOP position.
14. Reconnect the generator set engine starting
battery, negative (−) lead last.
15. Reconnect the power to the battery charger, if
equipped.
16. Start the generator set and check for leaks.
17. Stop the generator set and repair leaks or replace
damaged or worn components.
m:sm:003:008
3.5.6 Seawater Outlet
Check the seawater outlet at the interval specified in the
service schedule. See Figure 3-14 for location.
Remove any obstructions to keep the outlet clear.