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1991 Ford F-450 Super Duty Pickup CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Ford REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Ford F-450 Super Duty Pickup car and truck
repair procedures including Ford engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Ford F-450 Super Duty Pickup automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
DRUM BRAKES, FORD -> E & F 250-350 & F-Super Duty -> BRAKE ADJUSTMENTS -> 1990-91 E-350 -> Foot Operated Control -> Hand Operated Control (Parking Brake Lever) -> PARKING BRAKE -> REAR WHEEL MOUNTED -> SERVICE BRAKE -> TRANSMISSION MOUNTED
Vehicle: 1991 Ford F-450 Super Duty Pickup 7.5 V8 GAS
SERVICE BRAKE
The hydraulic drum brakes are self-adjusting and require a manual adjustment only after brake shoes have been relined or replaced. The adjustment is made as follows:
- Determine inside diameter of brake drum using brake adjustment gauge, Fig. .
- Reverse tool and adjust brake shoes to fit the gauge. Hold automatic adjusting lever out of engagement while rotating adjusting screw to avoid damaging screw slots.
PARKING BRAKE
REAR WHEEL MOUNTED
Foot Operated Control
- Position parking brake pedal to fully released position, then grip tension limiter housing to prevent automatic a...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
Ford Motor Co. Light Trucks, SUVs & Vans -> Fuel Pressure Relief -> Gasoline Fuel Injected Engines Except Escape, Freestar, Mariner, Monterey, Villager, 2005-06 Aviator, Explorer & Mountaineer, 2005-06 Expedition & Navigator & 2004-06 F150 & Mark LT
Vehicle: 1991 Ford F-450 Super Duty Pickup 7.5 V8 GAS
The fuel system remains under high pressure even when the engine is not running. This residual pressure must be relieved before servicing the fuel system. To avoid injury or fire, release pressure from the fuel system before disconnecting any fuel line.
The fuel system pressure must be relieved prior to disconnecting fuel lines to prevent accidental spray of fuel.
After the battery ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble -> Double Cardan -> Single Cardan, Flange Yoke -> Single Cardan, Slip Yoke
Vehicle: 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESEL
Single Cardan, Slip Yoke
Disassemble
Do not, under any circumstance, clamp the shaft in the jaws of a vise or similar holding fixture. Denting or localizing fracture can result, causing shaft failure during vehicle operation. Place the shaft on a suitable workbench. Do not damage the tube. If components are not marked and installed incorrectly, driveline imbalance can occur.
- Index-mark the shaft components.
- Remove and discard all four snap rings.
- Clamp bearing cup removal tool No. 205-086 or equivalent in a vise.
- If necessary, use a pair of pliers to remove a bearing cup t...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
Alternator, Replace
Vehicle: 1991 Ford F-450 Super Duty Pickup 7.5 V8 GAS
- Disconnect battery ground cable.
- Remove air cleaner assembly, if required.
- Disconnect wire harness connectors from voltage regulator.
- Remove accessory drive belt.
- Remove alter...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1991 Ford F-450 Super Duty Pickup 7.5 V8 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp at radiator outlet and remove hose.
- Reposition hose clamp at water pump and remove hose.
- Remove hose from vehicle.
- Reverse procedure to install.
Upper
- Drain cooling system into a s...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESEL
- Loosen accessory adjustment bolt and pivot bolt.
- Remove belt.
- Reverse procedure to install, adjust belt tension as follows:
- Loosen adjustment bolts then install a suitable belt tension gauge.
- Tighten pivot bolt enough to remove freeplay from pivot area.
- To adjust all belts except alternator, install square drive ratchet wrench or breaker bar to square hole in accessory bracket and tighte...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
Component location diagrams for most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S. from 1990+.
 I/P Components Diagram for 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESELComponents on diagram: |
 Body Components Diagram for 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESELComponents on diagram: |
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WIRING DIAGRAMS FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S.
 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESEL Wiring DiagramComponents on diagram: |
 1991 Ford F-450 Super Duty Pickup 7.5 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
OEM TSB listings for most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S. from 1985+.
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Document: MERCON ATF IS BRING REPLACED BY MERCON V ATF AS A SERVICE FLUID Vehicle: 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESEL Auto Systems: |
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Document: TRANSMISSION - 4R100/E40D - TORQUE CONVERTER ACCESS EXTERNAL DUST PLUG MAY BECOME DISLODGED Vehicle: 1991 Ford F-450 Super Duty Pickup 7.3 V8 DIESEL Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Ford F-450 Super Duty Pickup AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1991 Ford F-450 Super Duty Pickup cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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