F250 Diesel Generator Manual

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As with any new engine, potential truck buyers initially questioned the platform's reliability despite reports of extensive durability testing. Fortunately, Ford seems to have hit a home run with the 6.7L, which impresses in the departments of performance, fuel economy, reliability, and as we're slowly finding out, longevity. Over 500,000 6.7L Power Strokes were sold in the engine's first three years of production.

So my alternator went out and they want $800+ To fix it. So I want to do this myself but cannot find any basic instructions on how to replace the alternator on this new of a truck. It's not in warranty as it has 150000 miles on it ( I drive for work). So any help here is appreciated!

The 6.7L Power Stroke initially employed a unique single sequential turbocharger (SST) which features a dual compressor and single turbine setup affixed to a common shaft. The unit was replaced by a single Garrett GT37 variable geometry turbocharger (VGT) for the 2015 model year, subsequently increasing horsepower and torque in combination with additional upgrades. The SST returned to the Power Stroke for the completely revised 2017 model year Super Duty; torque reached an all time high at 925 lb-ft. Both horsepower and torque were once again increased for the 2018 model year, peaking at 450 hp and 935 lb-ft, respectively. Ford suggests that software adjustments, cylinder head improvements, and increased turbocharger boost are responsible for the increases.

Also unique is the engine's exhaust and intake manifold designs. As opposed to a tradition V engine, the intake and exhaust flows are reversed - the intake manifolds are located on the outer deck of the cylinder head and the exhaust manifolds exit directly into the engine valley where the turbocharger is mounted. The unique exhaust flow design is said to increase thermal efficiency of the turbocharger.

2020 6.7L Power Stroke Updates & Changes

For 2020 Ford introduced the 3rd Generation 6.7L Power Stroke diesel, rated at an impressive peak 1,050 lb-ft of a torque and 475 horsepower. While the revised engine features a number of significant changes, the most noteworthy is likely its new piston design. For 2020, the Power Stroke utilizes a steel piston with a relatively short overall height. Shrinking the height of the piston compensates for the increased weight of steel, a much heavier material than the previous aluminum design. The result is a piston that is comparable (albeit slightly heavier) in weight to the pre-2020 piston, but offers increased strength/resilience and lower friction due to its smaller profile. The 3rd generation 6.7L Power Stroke features the following additional revisions:

• Revised variable geometry turbocharger
• Compression ratio lowered from 16.2 : 1 to 15.8 : 1 (corresponds with new piston design)
• Updated cylinder head design
• Revised connecting rod and main bearing designs
• Engine block enhancements
• Split stream piston cooling jets (contributes to piston cooling and cylinder wall lubrication)
• New two piece lower intake manifold
• Revised injection system with maximum 36,000 psi injection pressure, new fuel injectors capable of 8 injection events per combustion cycle
• 10R140 ten speed automatic transmission replaces outgoing 6R140 TorqShift

6.7L Power Stroke Specs

* Ford's cylinder numbering convention for the 6.7L diesel is entirely different than that of previous International-Navistar produced engines.

6.7L Power Stroke Horsepower and Torque by Model Year

* Ford increased horsepower and torque through a free dealer reflash shortly following the introduction of the engine. The first Super Duty's sold featured the early 390 horsepower engine rating. Because of the flash update, very few engines likely exist with the original programming.

6.7L Power Stroke Horsepower and Torque Curves

6.7L Power Stroke Emissions System Overview

• Exhaust gas recirculation (EGR). A unique feature of the 6.7L Power Stroke is that EGR flow is controlled by the EGR valve prior to entering the EGR cooler, as opposed to cooling the exhaust gases before EGR flow is managed. This post-cooling system reduces sludge and soot buildup in the EGR valve, minimizing maintenance.
• Diesel oxidation catalyst (DOC). The DOC is a ceramic catalytic converter designed to oxidize hydrocarbons in the exhaust stream.
• Selective catalyst reduction (SCR). The SCR is where diesel exhaust fluid (DEF; 32.5% urea) is injected & mixed into the exhaust stream. Diesel exhaust fluid is used to convert nitrous oxides into water & nitrogen. DEF fluid level must be maintained to ensure proper operation of the system and the truck (an empty DEF tank will result in reduced performance and speed).
• Diesel particulate filter (DPF). The DPF captures diesel particulate matter (soot) and uses active regeneration technology to heat the exhaust system periodically, completely burning soot build up & cleaning the filter.

Additional 6.7L Power Stroke Info/Features

• The 6.7L Power Stroke engine blocks are manufactured by American foundry company, Tupy. The engines are assembled in Chihuahua, Mexico.
• Ford Motor Company announced new power ratings for the 6.7L Power Stroke on August 3rd, 2010. Owners of the 390 hp model were able to receive a free dealer installed upgrade to achieve the new 400 hp power rating.
• The pre-production 6.7L Power Stroke was nicknamed the 'Scorpion' due to its unique turbocharger mounting location and exhaust/intake arrangement.
• Engine features 6 bolt main bearing caps.
• 'Instant Start' glow plugs are said to provide quicker starts in even the coldest of weather.
• Compacted graphite iron block for reduced weight (160 lbs lighter than the 6.4L Power Stroke).
• Engine uses fractured cap Mahle connecting rods.
• Features piston cooling jets for lower piston temperatures. Oil is jetted into the bottom or the piston and travels through a cavity within the piston, cooling the top of the piston before exiting. This helps lower combustion temperatures and increase engine longevity.
• B20 biodiesel compatible.
• 6.7L Power Stroke receives 18% increase in fuel mileage over previous 6.4L engines.
• The 6.7L Power Stroke diesel and TorqShift transmission are used in applications up to 50,000 lbs GCWR (F-650, F-750 models).