Cooling System Flow: Back Of Front Cover; Oil Cooler Coolant Flow; Cooling System Flow: Oil Cooler - Ford 6.4L Power Stroke Manual

Cooling System Flow: Back of Front Cover

• Coolant is sealed via a metal one piece gasket and is
directed out of the front cover through three (3) passages.
• Two of the passages route coolant to the crankcase to cool
the cylinder walls and cylinder heads (there are different
sized orifices pressed into the crankcase in these two
passages).
• The third passage routes coolant to the oil cooler via a
passage in the crankcase.
• There are two passages for coolant to return from the
crankcase into the front cover.

Oil Cooler Coolant Flow

Oil Filter Base
Oil Cooler Cover
Oil Cooler

Cooling System Flow: Oil Cooler

• Coolant is directed out of the crankcase and into the oil filter base at
the front of the engine.
• The oil filter base routes the coolant down into the front of the oil
cooler then toward the rear of the engine.
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Co o l ing s y ste m
Oil Cooler Cover
(Top View)
Coolant
Outlet to
Crankcase
• Once the coolant has passed through the oil cooler it is routed
up to the top of the oil cooler then directed towards the front
through a port where it is then routed down, out of the cooler,
through a port in the block.
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COOLANT IN
(from block)
COOLANT OUT
(to block)
Coolant
Inlet to
Inlet from
Cooler
Crankcase
Oil Cooler Cover
(Bottom View)
Coolant
Orifices
Outlet
from Cooler