Mercury INSTALLATION MANUAL D7.3L D-TRONIC User Manual
Page 89
D7.3L D-TRONIC DIESEL ENGINES - BRAVO MODELS
Page 89 of 90
SEAWATER COOLING CIRCUIT (RAW WATER)
1 - Seawater Inlet
2 - Seawater Strainer
3 - Seawater Pump
4 - Aftercooler
5 - Engine Oil Cooler
6 - Heat Exchanger (Seawater Circuit)
7 - Power Steering Fluid Cooler
8 - Exhaust Pipe Water Jacket
9 - Seawater Outlet (Exhaust)
10- Seawater Outlet (Thru-Transom)
CLOSED COOLING CIRCUIT (FRESH WATER/COOLANT)
A- Circulating Pump - Closed Coolant
B- Exhaust Manifolds
C- Engine Crankcase
D- Cylinder Heads
E- Turbocharger
F - Thermostat
G- Bypass
H- Heat Exchanger (Closed Cooling Circuit)
FLOW OF :
a
ENGINE AIR
b
ENGINE OIL
c
POWER STEERING FLUID