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4.2.1
Above Waterline Installation
In addition to considerations described earlier, install a
customer-supplied silencer with the silencer's outlet at a
maximum of 3 m (10 ft.) horizontally from the center of
the engine's exhaust outlet. See Figure 4-6. Mount a
typical silencer with the inlet and outlet horizontal and
1
Waterline
15
1. Slight lift improves silencing (keep below level of exhaust
manifold outlet) and prevents water backwash into silencer
2. Silencer (customer supplied)
3. Exhaust mixer elbow
4. Heat exchanger (locations vary by model)
5. Coolant recovery tank (located on unit on some models)
6. Locate coolant recovery tank at same height as heat exchanger
7. Maximum seawater pump lift of 1 m (3 ft.)
8. Seawater strainer
9. Seacock
10. Intake strainer
Figure 4-6 Typical Above Waterline Installation
Note: Use two hose clamps on each end of all flexible
exhaust hose connections.
TP-5982
4/06
2
14
with drain plug down. Use a pitch of at least 13 mm per
30.5 cm (0.5 in. per running foot). Some silencers
require two supporting brackets or hanger straps for
installation to stringers or other suitable structures.
Follow the instructions provided with the silencer.
Locate any lift in the exhaust line, used to improve
silencing, below the engine exhaust manifold outlet.
3
12
13
11. Engine-driven seawater pump
12. Minimum exhaust hose pitch of 1.3 cm per 30.5 cm (0.5 in. per
ft.)
13. Maximum distance between silencer and exhaust mixer elbow
of 3 m (10 ft.)
14. Minimum exhaust hose pitch of 1.3 cm per 30.5 cm (0.5 in. per
ft.)
15. Minimum exhaust outlet distance above waterline of 10 cm
(4 in.)
NOTE: Data applies to both rear- and side-exhaust installations.
Note: Read the text for a complete explanation of
dimensions and other installation considerations.
4
5
6
8
11
9
10
Section 4 Exhaust System
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21
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