Kohler 10EKD-Low CO, Operation

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TP-6591 10/13 30 Section 3 Scheduled Maintenance
3.7.3 Seawater Pump
The belt-driven seawater pump is located on the
crankshaft 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. Close the seacock.
2. Remove the seawater pump coverplate. See
Figure 3-8.
1
2
3
4
5
6
7 8 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 3-8 Seawater Pump, Typical
3. Remove the impeller.
4. Inspect the impeller for damaged, cracked, broken,
missing or flattened vanes. The impeller vanes
should be straight and flexible. See Figure 3-9.
Replace the impeller if it is damaged.
1
2
3
1. Flattened vane
2. Crack
3. Broken vane
TP-6053
Figure 3-9 Worn Impeller
5. Lubricate the impeller with soapy water before
installation.
6. 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.
7. Inspect the coverplate and gasket for corrosion
and/or damage. Replace components as
necessary.
8. Lubricate the gasket with silicon grease and attach
the gasket and coverplate to the seawater pump
housing.
9. Open the seacock.
10. Start the generator set and check for leaks.
11. Stop the generator set and repair leaks or replace
damaged or worn components.
m:sm:003:008
3.7.4 Seawater Flow Switch
The seawater flow switch is located on the nonservice
side of the generator set. See Figure 3-10. Check and
clean the seawater flow switch at the interval specified in
the service schedule.
1
GM58158-M
1. Units without a siphon break: Molded hose routed to
catalyst and flow switch.
2. Units with a siphon break: Hose routed to siphon break
connector and flow switch.
3. Flow switch
3
2
IN
OUT
Figure 3-10 Seawater Flow Switch Location