2008 Ford F-250 F-350 F-450 F-550 Super Duty Engine Systems Workshop Manual

Description

2008 Ford F-250 F-350 F-450 F-550 Super Duty Engine Systems Workshop Manual

This Group 303 workshop volume is written for the 2008 F-250, F-350, F-450 and F-550 Super Duty chassis. Footers throughout the file read 2008 F-250, 350, 450, 550 Super Duty, 7/2007. The book opens with engine-system general information, then spends the majority of its 1647 pages on the 6.4L diesel: long-block and short-block assembly, remanufactured-engine dress, body-off and body-on removal, in-vehicle repairs, cooling, common-rail fuel charging, sequential turbochargers, accessory drive, diesel starting, glow-plug hardware, EGR, charge-air plumbing and diesel electronic controls.

File Details

• Manual type: Engine systems workshop manual (Group 303)
• Brand / models: Ford F-250, F-350, F-450, F-550 Super Duty
• Model year shown: 2008
• Primary engine coverage: 6.4L turbocharged diesel V-8
• Language: English
• Page count: 1647
• File format: PDF
• Publication date on section footers: 7/2007

What the 6.4L Diesel Section Actually Describes

Section 303-01C identifies the 6.4L as a 4-cycle turbocharged overhead-valve V-8 of 6.4L (390 cu in). The right bank is numbered 1, 3, 5, 7 and the left bank 2, 4, 6, 8. The crankcase is a two-piece design with internal piston-cooling oil jets, a forged-steel crankshaft and powdered-metal cracked connecting rods. Aluminum-alloy pistons use an upper keystone compression ring, a lower rectangular compression ring and oil-control rings, with free-floating pins retained by pin retainers. The roller camshaft rides in five insert bearings and is gear-driven from the crankshaft. Hydraulic tappets with roller followers hold zero valve lash. Cylinder heads locate piezo-actuated injectors in the center of each chamber. Lubrication uses a crankshaft-driven gerotor pump, an oil cooler, an oil-pressure regulator, an EOP switch and an EOT sensor. Cast-iron exhaust manifolds feed the turbocharger inlet pipes. The oil pan is two-piece with the pickup in the upper pan. The intake manifold is one-piece cast aluminum with an EGR adapter.

Published general specifications in 303-01C include bore 98.2 mm (3.87 in), stroke 105 mm (4.134 in), firing order 1-2-7-3-4-5-6-8, compression ratio 17.2:1, oil capacity 14.1 L (15 qt) with filter, and minimum oil pressure of 82.7 kPa (12 psi) at 700 rpm, 165.5 kPa (24 psi) at 1,200 rpm and 310.3 kPa (45 psi) at 1,800 rpm at operating temperature. Coolant fill listed with Motorcraft Premium Gold is 29 L (30.6 qt). Engine weight without accessory-drive components is 513.5 kg (1,132 lb) automatic and 528.0 kg (1,164 lb) manual. Oil specification called out is WSS-M2C171-E / API CJ-4 or CJ-4/SM, with 15W-40 and 5W-40 required above 10°C (50°F) for heavy-duty and towing work and a block heater required below -23°C (-10°F).

Chapters Covered

• 303-00 Engine System — General Information — Description and Operation
• 303-00 Diagnosis and Testing — engine performance and NVH inspection, symptom charts, oil-leak dye method, compression gauge check, cylinder leakage, oil consumption, intake vacuum, oil pressure, valve-train analysis
• 303-00 General Procedures — bearing inspection; camshaft journal diameter, end play, journal-to-bearing clearance, lobe lift, runout and surface inspection; connecting-rod clearance, taper, bend, bushing, cleaning, large-end bore, side clearance and twist; core plugs; crankshaft end play and main-journal checks; cylinder-block and head distortion; bore cleaning, out-of-round and taper; exhaust-manifold, flexplate, flywheel, hydraulic-lash-adjuster, piston, pin, ring, roller-follower, spark-plug, sprocket, valve-guide, valve, seat, spring and VCT housing inspections
• 303-01C Engine — 6.4L Diesel — enhanced long block, enhanced short block, remanufactured engine and complete engine assembly/disassembly
• 303-01C Description and Operation — engine description, identification labels, emissions label, oil requirements
• 303-01C Diagnosis and Testing — oil-pressure diagnosis and symptom chart
• 303-01C General Procedures — diesel compression test, honing, oil-pump rotor, push-rod and rocker inspection, plus matching dimensional checks
• 303-01C Cylinder Head and Piston — body-off and body-on cylinder-head service
• 303-01C Engine — Body Off and Engine — Body On removal and installation
• 303-01C In-Vehicle Repair — crankshaft front seal and pulley; early-build and late-build rear seals; front cover; LH/RH engine mounts (body on and partial body lift); rear cover (body off and body on); LH/RH exhaust manifolds; flexplate and flywheel; intake manifold (body off and body on); intake throttle adapter; oil cooler; oil-level indicator; lower oil pan (body on and partial body lift); upper oil pan; oil-pressure regulator; oil pump; rocker arms; LH/RH valve covers; valve tappets
• 303-01C Specifications — materials, general engine data, valve-train and camshaft limits, torque charts
• 303-03 Engine Cooling — description, pinpoint tests for coolant loss, overheat and no-warm-up; diesel coolant test; drain/fill/bleed; diesel flushing; heater-core backflush; block heater, coolant pump, fan, shrouds, stator, cooling module, degas bottle, EGR cooler coolant hoses, heater supply tube, radiator, dual thermostats
• 303-04C Fuel Charging and Controls — 6.4L Diesel — cylinder-head fuel-passage flushing; injection-pump fitting re-torque; wiring harness; filter module; high-pressure pump (body off and body on); supply and return tubes; injector sleeves, supply tubes and injectors; fuel rails; throttle body
• 303-04D Turbocharger — diagnosis, internal oil-leak and bearing-clearance checks; turbocharger R&R body off and body on; pedestal
• 303-04E Fuel and Turbocharger Cooling System — expansion tank, hoses, coolant pump, fuel cooler, radiator, turbo actuator cooler
• 303-05 Accessory Drive — belt, idler, tensioner, A/C compressor belt and tensioner, FEAD exploded view
• 303-06B Starting System — Diesel Engine — early-build and late-build no-crank pinpoint tests, slow-crank and noise tests, drive-gear inspection, starter R&R
• Glow plug system — control module, harnesses, glow plugs and glow-plug sleeves
• 303-08 Engine Emission Control — EGR cooler leak test, crankcase vent oil separator, horizontal and vertical EGR coolers, EGR valve
• 303-12 Intake Air Distribution and Filtering — CAC repair, air-cleaner element and pipes, charge-air cooler and LH/RH CAC tubes
• 303-14B Electronic Engine Controls — Diesel Engine — extended idle shutdown initialization; APP, BARO, CMP, CKP, DPF pressure, ECT, EOP, EOT, EGRT-1/EGRT-2, EGT, EP, FRP, fuel temperature, IAT2, MAP, MAF, PCM and turbocharger actuator

Taken together, the 2008 Ford F-250 F-350 F-450 F-550 Super Duty Engine Systems Workshop Manual is a shop-floor reference for measuring worn parts against published limits, assembling a 6.4L long or short block with the listed special tools, and performing the body-off versus body-on paths that this cab-and-chassis truck actually requires. Shared Group 303 material also covers gasoline-engine performance and NVH diagnosis in 303-00, plus cooling and accessory-drive notes that list 5.4L and 6.8L coolant capacities alongside the 6.4L diesel figures. Full gasoline long-block teardown is not the focus of this compilation; diesel mechanical, fuel, turbo and sensor work is.

Diagnostic Paths and Special Tools

Section 303-00 walks gasoline concerns through scan-tool network tests, continuous-memory DTCs and two inspection paths: engine performance versus noise, vibration and harshness. Component tests include fluorescent oil-dye leak finding with Dye-Lite Gasoline Engine Oil Leak Detection Dye, a compression-gauge procedure that treats the lowest cylinder as acceptable only if it is at least 75 percent of the highest reading, cylinder leakage detection (leakage over 20 percent called excessive), a documented oil-consumption road test, intake-manifold vacuum interpretation and an oil-pressure gauge check at the sender port. Diesel oil-pressure work in 303-01C uses adapter 303-765 at the EOT port and quotes 310.3 kPa (45 psi) at 1,800 rpm. Cooling pinpoint tests cover loss of coolant, overheat (including DTC P0217) and failure to reach temperature. Starting diagnostics split early-build and late-build no-crank logic, including PCM-controlled cranking and clutch-pedal or transmission-range inputs.

Illustrated special tools named in the procedures include Dial Indicator Gauge with Holding Fixture 100-002, EngineEAR 107-R2103, Oil Pressure Gauge 303-088, Vacuum/Pressure Tester 164-R0253, IDS/VCM scan tool, Turbocharger Lifting Bracket 303-1266, Camshaft Alignment Tool 303-772, 2000 lb engine stand 209-00153 with 6.0/6.4 liter adapters 209-00154, Fan Clutch Nut Wrench 303-214, Fan Hub Nut Wrench 303-774, Diesel Engine Lifting Bracket 303-D043 and fuel-system caps 310-158.

In-Vehicle Versus Body-Off Reality

Many 6.4L jobs are written twice. Intake manifold, oil cooler, high-pressure pump, fuel tubes, turbocharger, engine mounts, rear cover and the complete engine each have a body-off path and a body-on or partial-body-lift path. Mount center bolts are torque-to-yield at 350 Nm (258 lb-ft) and must be replaced; LH mount nuts go to 200 Nm (148 lb-ft) and RH nuts to 115 Nm (85 lb-ft). Rear-seal service is split into early-build and late-build installer methods, with a hard notice never to remove the rear primary crankshaft flange bolts. Cylinder heads on this diesel are not to be resurfaced. High-pressure fuel work requires the engine to be cool, fuel caps on open lines, no air tools on injectors, and pump-fitting re-torque after disturbance. Cooling hose joints use constant-tension worm-gear clamps only.

Use This Manual For These Jobs

The 2008 Ford F-250 F-350 F-450 F-550 Super Duty Engine Systems Workshop Manual supports oil-leak and consumption diagnosis, compression and leak-down testing, valve-train and bearing measurements, 6.4L long-block or short-block assembly, cylinder-head and piston service, front- and rear-seal replacement, oil-pump and cooler work, common-rail pump and injector replacement, dual-turbocharger R&R and pre-lube, cooling-system flush and dual-thermostat service, EGR cooler leak testing, starter and glow-plug repairs, and sensor or PCM replacement including extended-idle-shutdown re-initialization. Following the printed torque stages, clamp types, oil grades and contamination notices is what keeps a 6.4L from destroying a new oil cooler or a high-pressure pump after an otherwise correct repair.

Delivery

After purchase you receive the 2008 Ford F-250 F-350 F-450 F-550 Super Duty Engine Systems Workshop Manual as an instant PDF download. There is no shipped disc or binder. Open the file on a shop PC, tablet or phone and print the procedure, specification table or exploded-view page you need for the truck on the rack.