303-01C-i Engine — 6.
0L Diesel 303-01C-i
SECTION 303-01C Engine — 6.0L Diesel
CONTENTS PAGE
DESCRIPTION AND OPERATION
Engine .............................................................................................................................................................................. 303-01C-2
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-2 Engine — 6.0L Diesel 303-01C-2
DESCRIPTION AND OPERATION
Engine
Engine Description
The 6.0L diesel engine is:
• a four-cycle turbocharged V-8 with overhead valves.
• 6.0 liter (365 cubic inch) displacement.
• separated into 2 banks, the right bank numbered 1, 3, 5, 7 and the left bank numbered 2, 4, 6, 8.
• rated at 325 horsepower and 570 lb-ft torque.
The cylinder block has been designed to withstand the loads of diesel operations by using:
• a two-piece crankcase.
• internal piston cooling oil jets.
• a forged steel crankshaft.
• powdered metal, fractured connecting rods.
The piston is:
• made of an aluminum alloy.
• fitted with an upper keystone compression ring.
• fitted with a lower rectangular compression ring.
• fitted with oil control rings.
The piston pins are:
• a free-floating type, permitting the piston pin to move/float freely in the piston pin bore.
• retained in the piston by piston pin retainers.
The camshaft is:
• supported by five insert-type camshaft bearings.
• of the roller camshaft design.
• driven by the crankshaft through the use of the crankshaft gear and the camshaft gear.
The hydraulic valve tappets:
• minimize engine noise.
• maintain zero valve lash.
• incorporate camshaft follower guides.
• incorporate a roller follower design that reduces camshaft wear.
The cylinder heads are designed:
• to incorporate electrohydraulic fuel injectors.
• to locate the fuel injectors in the center of the combustion chambers between the rocker arms.
• with external high-pressure oil galleries.
The glow plug system is:
• designed to preheat the cylinders for faster cold weather starts and smoke reduction.
• controlled by the powertrain control module (PCM) and glow plug control module.
• mounted directly into the cylinder heads.
The optional block heater is:
• designed to heat the engine coolant and oil for improved cold weather starts.
• located near the starter.
• powered by a 120-volt external power source.
• replaceable, but not repairable.
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-3 Engine — 6.0L Diesel 303-01C-3
DESCRIPTION AND OPERATION (Continued)
The fuel injection system used on the engine:
• is controlled by the powertrain control module (PCM) and fuel injector control module.
• utilizes a frame-mounted horizontal fuel conditioning module.
• circulates fuel through a combination fuel filter, fuel heater and water separator assembly.
• uses eight electrohydraulic fuel injectors.
• has a secondary fuel filter mounted on the engine.
• has a fuel pressure regulator mounted in the secondary fuel filter housing.
The engine lubrication system:
• is divided into two systems: the low-pressure system lubricates the engine, the high-pressure system actuates the fuel injectors.
• is cooled by an engine oil cooler.
• utilizes an engine oil pressure (EOP) sensor and an oil pressure regulator.
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-4 Engine — 6.0L Diesel 303-01C-4
DESCRIPTION AND OPERATION (Continued)
6.0L Crankshaft, Camshaft and Piston
Item Part Number Description
1 6010 Cylinder block assembly
2 6250 Camshaft assembly
3 6A251 Camshaft bearing kit
4 6148 Piston ring kit
5 6140 Piston pin retaining ring
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-5 Engine — 6.0L Diesel 303-01C-5
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
6 6102 Piston pin and piston
7 6200 Connecting rod and cap assembly
8 6B237 Connecting rod bearing kit
9 6214 Connecting rod bolt
10 6333 Crankshaft bearing kit
11 6303 Crankshaft assembly
12 6345 Main bearing bolt, M14 x 2 x 114.5
13 6345 Main bearing bolt, M14 x 2 x 127.5
14 6675 Upper oil pan assembly
15 6626 Oil pump cover-to-inlet tube flange O-ring seal
16 6622 Oil pump screen cover and tube
17 6676 Lower oil pan assembly
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-6 Engine — 6.0L Diesel 303-01C-6
DESCRIPTION AND OPERATION (Continued)
6.0L Front Cover, Rear Cover and Oil Components
Item Part Number Description
1 9D280 High pressure oil rail
2 9A332 Crankcase-to-head tube assembly
3 — Crankcase-to-head tube (part of 9A332)
4 W302195 Port plug
5 9J332 High-pressure oil branch tube
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-7 Engine — 6.0L Diesel 303-01C-7
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
6 9C968 Injection pressure regulator valve
7 9A543 High-pressure oil pump
8 6L080 Engine rear cover assembly
9 6701 Crankshaft rear oil seal assembly
10 6D083 Engine rear cover gasket
11 6010 Cylinder block assembly
12 6020 Cylinder front cover gasket
13 8575 Water thermostat assembly
14 6019 Cylinder front cover assembly
15 6608 Oil pump drive rotor and shaft assembly
16 6616 Oil pump body
17 6700 Crankcase front oil seal
18 6316 Crankshaft vibration damper
19 8509 Water pump pulley assembly
20 8501 Water pump assembly
21 6A638 Crankcase oil cooler cover with oil cooler
22 6881 Oil filter adapter assembly
23 6L625 Engine oil filter and adapter assembly
24 6718 Oil filter outlet tube assembly
25 6714 Oil filter assembly
26 6C631 Oil filter cap assembly
27 9F838 Injection control pressure (ICP) sensor
28 9E527 Fuel injector nozzle assembly
29 6095 Fuel pump cover
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-8 Engine — 6.0L Diesel 303-01C-8
DESCRIPTION AND OPERATION (Continued)
6.0L Front Cylinder Head and Rocker Arm Carrier
Item Part Number Description
1 6065 Cylinder head bolt
2 6A527 Valve rocker arm shaft support bolt
3 6C288 Engine rocker arm carrier
4 6A585 Valve rocker arm fulcrum assembly
5 6565 Valve push rod assembly
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-9 Engine — 6.0L Diesel 303-01C-9
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
6 6C541 Valve rocker bridge
7 6518 Valve spring retainer key
8 6514 Valve spring retainer
9 6513 Valve spring
10 6571 Valve stem seal
11 9F538 Fuel injector nozzle sleeve
12 6584 Valve rocker arm cover gasket
13 6049 Cylinder head assembly
14 9F538 Glow plug sleeve
15 9431 Exhaust manifold
16 9A461 Exhaust manifold-to-cylinder head spacer
17 W300013 Exhaust flange bolt
18 6051 Cylinder head gasket
19 6505 Exhaust valve
20 6507 Intake valve
21 6500 Valve tappet assembly
22 6C329 Crankcase cam guide
6.0L Valve Cover
Item Part Number Description
1 6584 Rocker arm cover gasket
2 6A505 Valve cover assembly (LH)
3 W300034 Valve cover bolt assembly
4 6A665 Crankcase breather
5 W300035 Valve cover stud assembly
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-10 Engine — 6.0L Diesel 303-01C-10
DESCRIPTION AND OPERATION (Continued)
Lubrication System — Low-Pressure
Low-Pressure Oil Flow
Item Part Number Description
1 6A638 Crankcase oil cooler cover with oil cooler
2 9G440 Turbocharger oil supply tube
3 6K682 Turbocharger
4 6565 Push rod
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-11 Engine — 6.0L Diesel 303-01C-11
DESCRIPTION AND OPERATION (Continued)
Item Part Number Description
5 6500 Valve tappet
6 — Main lube oil galleries (part of 6010)
7 9A543 High-pressure oil pump
8 — Camshaft gear (part of 6250)
9 6C327 Piston cooling jet
10 6333 Main bearings
11 6049 Cylinder head
12 6676 Lower oil pan
13 6622 Oil pickup tube
14 6019 Front cover assembly
15 6608 Oil pump drive rotor and shaft assembly
16 6616 Oil pump body
17 6A251 Camshaft bushing
18 6B678 Oil pressure regulator valve assembly (part of 6019)
The lubrication system is pressure regulated, cooled, and full flow filtered. In addition to providing engine lubrication, it supplies oil to the high-pressure oil
system to control fuel delivery in the fuel injectors.
The following sequence describes lube oil flow through the major oil system components:
1. Oil pan (sump).
2. Oil pickup tube and screen.
3. The low pressure oil pump is a gerotor type contained in the front cover. The gerotor assembly consists of an outer and an inner gear. The inner gear
is driven by the crankshaft. The pump inlet and outlet passages are through ports in the front cover.
• Oil pressure regulator (bypass) controls lube oil pressure via a spring-loaded plunger relieving oil back to the inlet of the pump once operating
pressure has exceeded 517 kPa (75 psi).
4. The oil cooler cover receives oil from the oil pump and cools it in the oil cooler, which is located underneath the oil cooler housing.
• The cooler bypass valves open in the event that the oil cooler base and/or cooler becomes restricted.
5. The oil filter housing contains a paper-type element. Unfiltered oil flows up and around the outside of the filter and then down through the center standpipe.
• The oil filter bypass allows oil to pass directly to the main oil gallery should the filter become restricted.
6. Turbocharger and drive gears.
• Cooled and filtered oil supplied from the oil cooler base lubricates the turbocharger bearings and provides hydraulic pressure for the variable
geometry turbocharger control valve. Oil drains from the turbocharger through a drain tube back to the high-pressure hydraulic pump cover.
7. Main galleries. Cooled and filtered oil supplied from the oil cooler base fills the main galleries to distribute oil to the following components via
passages machined within the crankcase.
1 Hydraulic cam followers.
2 Camshaft main journals.
3 Crankshaft main journals.
4 Connecting rod bearings receive pressurized oil from the main bearings via drilled passages within the crankshaft.
5 Rocker arms receive their lube oil from the hydraulic cam followers via the push rods. Oil drains back to the sump through holes located in the
cylinder head.
6 Piston cooling tubes.
8. High-pressure hydraulic pump oil reservoir.
• This reservoir (below oil cooler) has a constant supply of oil for the pressure hydraulic oil pump. It has an approximate capacity of 0.9 L (0.95 qt).
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-12 Engine — 6.0L Diesel 303-01C-12
DESCRIPTION AND OPERATION (Continued)
Lubrication System — High-Pressure
Item Part Number Description
1 9A543 Fuel injector pump assembly
2 9C968 Injection pressure regulator (IPR) valve
3 6095 Fuel pump cover
4 9E527 Fuel injectors (8 required)
5 9D280 Fuel injector manifold assembly (right side)
6 9F838 Injection control pressure (ICP) sensor
7 — Crankcase-to-head tube assembly (right side)
8 9J332 Rear engine tube assembly
9 — Crankcase-to-head tube assembly (left side)
10 9D280 Fuel injector manifold assembly (left side)
NOTE:
Late build shown, early build similar.
The high-pressure oil system is composed of two subsystems:
• Injection control pressure (ICP) system
• Fuel injector assembly
The hydraulic force necessary to inject fuel into the combustion chamber is provided by the ICP system. The fuel injectors on the engine are hydraulically
actuated and electronically controlled.
The ICP system is composed of the following components:
• Oil reservoir
• Oil pump assembly (high pressure)
• Oil pump cover
• High-pressure tubes
• High-pressure rail assemblies
2005 F-250, 350, 450, 550 Super Duty, 10/2004
303-01C-13 Engine — 6.0L Diesel 303-01C-13
DESCRIPTION AND OPERATION (Continued)
• Injection control pressure (ICP) sensor
• Injection pressure regulator (IPR) valve
• Check valves
The high-pressure oil pump receives engine lube oil from a reservoir cast into the vee of the crankcase. This reservoir makes available a constant supply of
engine oil from the pump. This reservoir is constantly refilled by the low-pressure lube oil system with filtered oil from a passage in the oil cooler housing.
The high-pressure oil pump is mounted at the rear of the crankcase and is driven by the camshaft gear. Oil is drawn from the oil reservoir through a 200-
micron screen and into a passage to the pump inlet port. High-pressure oil from the pump is distributed to the injectors through a series of tubes and manifolds.
The high-pressure discharge tube is mounted to the pump and serves to connect the oil flow from the high-pressure oil pump to the rear engine tube
assembly. This tube assembly divides oil flow into two tubes or branches, one for each side of the engine. Rigid tubes in each branch direct oil up into the high-
pressure oil rail of each cylinder head. Oil from the rails enters the injectors through O-ring sealed ports at the top of each injector. When the injector
opening coil is energized, high-pressure oil is used to push fuel into the combustion chamber. After injection is complete, the oil inside the injector is vented
through the top portion of the injector and allowed to drain back to the oil sump.
2005 F-250, 350, 450, 550 Super Duty, 10/2004
