Pressure Cap; Seawater Pump - Kohler 10EG Operation

3.7.4

Pressure Cap

Closed heat exchanger systems utilize a pressure cap
to raise the boiling point of the coolant, enabling higher
operating temperatures. If the cap leaks, replace it with
a cap of the same rating. Find the pressure cap rating in
Figure 3-6.
3.7.5

Seawater Pump

The belt-driven seawater pump is located on the engine
end of the generator set.
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.
Figure 3-7.
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 3-8.
Replace the impeller if it is damaged.
1
10
9 8 7
1. Seawater pump
2. Coverplate
3. Gasket
4. Impeller
5. Bearing
6. Housing
Figure 3-7 Seawater Pump, Typical
30 Section 3 Scheduled Maintenance
Check and change the
11
2
3
4
5
6
TP-6053
7. Pulley
8. Drive shaft
9. Washer
10. Nut
11. Mechanical seal,
if equipped
1. Flattened vane
2. Crack
3. Broken vane
Figure 3-8 Worn Impeller
5. Lubricate the impeller with soapy water before
installation.
6. Install the impeller.
See
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.
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.
1
2
3
TP-6053
Replace components as
m:sm:003:008
TP-6323 3/06