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Volvo 780 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Volvo REPAIR SHOPS DON'T WANT YOU TO KNOW
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A/C & HEATER SERVICE PROCEDURES FOR Volvo 780 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported Volvo 780 cars and light trucks from 1990+
Import Compressor Service -> Sanden Compressor -> SHAFT SEAL & BEARING, REPLACE -> EXCEPT HONDA -> HONDA
Vehicle: 1991 Volvo 780 2.3 L4 GAS
HONDA
- Remove clutch assembly as previously described, then remove front housing screws and the front housing and O-ring.
- Remove shaft seal, then the felt ring and seal plate from front housing.
- Set front housing onto shaft ring remover, then use a hub disassemble/assemble tool with a press to remove bearing.
- Reverse procedure to install, noting the following:
- Lubricate the shaft seal and the compressor shaft with refrigerant oil.
- Install shaft seal onto compressor shaft aligning the seal case flats with the shaft f...
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BRAKE SERVICE PROCEDURES FOR Volvo 780 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported Volvo 780 cars and light trucks from 1990+.
VOLVO, POWER BRAKE UNITS -> SYSTEM SERVICE -> CHECK VALVE, REPLACE -> POWER BRAKE BOOSTER, REPLACE
Vehicle: 1991 Volvo 780 2.3 L4 GAS
POWER BRAKE BOOSTER, REPLACE
- Remove master cylinder, then disconnect vacuum hose from power brake unit.
- Disconnect link arm from brake pedal, then remove bracket with clutch pedal stop.
- Remove nuts attaching power brake unit to dash panel.
- Pull power brake unit forward, then disconnect fork from link arm and remove brake unit.
CHECK VALVE, R...
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FUEL FILTER REPLACEMENT PROCEDURES FOR Volvo 780 AUTOMOBILES
Fuel filter replacement procedures with corresponding images for most domestic and imported Volvo 780 cars and light trucks sold in the U.S. for 1980+.
Volvo -> Fuel Filter Replacement -> 260, 740, 760, 780, 940, 960 & 1984-93 240
Vehicle: 1990 Volvo 780 2.3 L4 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Always disconnect the battery ground cable before replacing the fuel filter. Position a shop towel over fuel filter connections before disconnecting.
The fuel filter is located under ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR Volvo 780 AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported Volvo 780 cars and light trucks from 1990+.
DRIVESHAFT U-JOINT, Replace
Vehicle: 1990 Volvo 780 2.3 L4 GAS
- Raise and support vehicle.
- Remove u-joint bolts.
- Pry shaft backwards slightly and tilt it down forward...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR Volvo 780 AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported Volvo 780 cars and light trucks from 1990+.
Starter, Replace
Vehicle: 1990 Volvo 780 2.3 L4 GAS
- Remove hose and pipe for charge air cooler.
- Remove splash guard.
- Remove power cable and antenna from starter motor.
- ...
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MAINTENANCE LAMP RESET PROCEDURES FOR Volvo 780 AUTOMOBILES
Maintenance lamp reset procedures with corresponding images for most domestic and imported Volvo 780 cars and light trucks sold in the U.S. from 1990+.
Volvo -> Air Bag Warning Lamp ->
Vehicle: 1991 Volvo 780 2.3 L4 GAS
If the Air Bag warning lamp lights and stays on, diagnosis and ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR Volvo 780 AUTOMOBILES
Includes radiator, cooling and heater hose replacement procedures for domestic and imported Volvo 780 cars and light trucks from 1990+
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1991 Volvo 780 2.3 L4 GAS
Lower
- Drain coolant into a suitable container.
- Reposition lower hose clamp at radiator and remove hose.
- Reposition lower hose clamp at water pump and remove hose.
- Remove hose from vehicle.
- Reverse procedure to i...
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COMPONENT LOCATION DIAGRAMS FOR Volvo 780 AUTOMOBILES
Component location diagrams for most Volvo 780 cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR Volvo 780 AUTOMOBILES
OEM drawn wiring diagrams for most Volvo 780 cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR Volvo 780 AUTOMOBILES
OEM TSB listings for most Volvo 780 cars and light trucks sold in the U.S. from 1985+.
Document: NEW TOOL - TIGHTENING FUEL TANK SENDING UNIT NUT Vehicle: 1989 Volvo 780 2.8 V6 GAS Auto Systems: |
Document: BULKHEAD JOINT/WIPER WELL COVER WHISTLE - SEAL PROC Vehicle: 1989 Volvo 780 2.8 V6 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR Volvo 780 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most Volvo 780 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 Volvo 780 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 Volvo 780 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 Volvo 780 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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