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MERCEDES-BENZ 350SD CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW
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| 1991 |
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about MERCEDES-BENZ 350SD car and truck
repair procedures including MERCEDES-BENZ 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 MERCEDES-BENZ 350SD automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR MERCEDES-BENZ 350SD 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 MERCEDES-BENZ 350SD cars and light trucks from 1990+
Mercedes-Benz -> Component Replacement & Adjustment -> EVAPORATOR CORE, REPLACE -> 124, 129 & 140 SERIES -> 126 SERIES -> 201 SERIES
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
124, 129 & 140 SERIES
The evaporator core is located in front of the heater core in the heater/evaporator housing. Remove heater/evaporator housing as described under "Heater Core, Replace." After removing, disassemble heater/evaporator housing to gain access to evaporator core.
126 SERIES
- Drain cooling system, then discharge A/C refrigerant system.
- Remove heater core as described under "Heater Core, Replace."
- Remove electronic switching unit.
- Disconnect expansion valve from evaporator core. Cap fittings and fitting bores.
- Re...
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BRAKE SERVICE PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported MERCEDES-BENZ 350SD cars and light trucks from 1990+.
MERCEDES-BENZ, POWER BRAKES -> POWER BRAKE UNIT REPLACEMENT
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
On Models Equipped With Anti-Lock Brake Systems, Refer To "Anti-Lock Brake Systems."
- Disable airbag system as described in "Airbag System Disarming."
- On vehicles with manual transmission, disconnect hose and move toward master cylinder.
- On all mode...
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FUEL FILTER REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Fuel filter replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ 350SD cars and light trucks sold in the U.S. for 1980+.
Mercedes-Benz -> Fuel Filter Replacement -> Diesel Engines -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
Fuel System Pressure Relief
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.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental fuel spray.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
- Ensure the ignition switch is in the Off position.
- Remove the fuel pump protect...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported MERCEDES-BENZ 350SD cars and light trucks from 1990+.
CV AXLE SHAFT, Replace
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
- Raise and support vehicle, then remove wheel, Fig. .
- Remove front axle shaft attaching collar nut.
- Remove lower engine compartment cover.
- Using suitable socket, remove axle shaft from connecting flange.
- Using suitable wire, secure inner joint in compressed piston.
- Position steering wheel to right stop.
- Using suitable plastic hammer, loosen fron...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported MERCEDES-BENZ 350SD cars and light trucks from 1990+.
Alternator, Replace
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
- Disconnect battery ground cable at battery.
- Remove electrical connections from alternator.
- Remove alternato...
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MAINTENANCE LAMP RESET PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Maintenance lamp reset procedures with corresponding images for most domestic and imported MERCEDES-BENZ 350SD cars and light trucks sold in the U.S. from 1990+.
Mercedes-Benz -> Low Coolant Lamp ->
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
The Low Engine Coolant Level warning lamp will illuminate when the ignition switch is placed in the On position to indicate the warning lamp is operational. After the engine has been started, the warning lamp should go off. If the warning lamp remains on af...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Includes radiator, cooling and heater hose replacement procedures for domestic and imported MERCEDES-BENZ 350SD cars and light trucks from 1990+
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
Lower
- Drain coolant into a suitable container.
- Reposition clamp at radiator and remove hose.
- Reposition clamp at water pump and remove hose.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR MERCEDES-BENZ 350SD AUTOMOBILES
Serpentine belt replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ 350SD cars and light trucks sold in the U.S. from 1990+.
Serpentine Drive Belt, Replace
Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL
- Unscrew fan shroud, remove magnetic fan.
- Remove radiator.
- Remove fan shroud.
- Loosen fan shroud, place above fan.
- Remove viscous fan coupling.
- Unscrew nut, remove screw ...
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COMPONENT LOCATION DIAGRAMS FOR MERCEDES-BENZ 350SD AUTOMOBILES
Component location diagrams for most MERCEDES-BENZ 350SD cars and light trucks sold in the U.S. from 1990+.
 RH Front Footwell Diagram for 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESELComponents on diagram: |
 Top Of Engine Diagram for 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESELComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR MERCEDES-BENZ 350SD AUTOMOBILES
OEM TSB listings for most MERCEDES-BENZ 350SD cars and light trucks sold in the U.S. from 1985+.
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Document: OIL FILTER COVER - REPLACING MOUNTING STUDS INFO Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL Auto Systems: |
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Document: BECKER POST-WARRANTY FACTORY DIRECT RADIO REPAIR PROGRAM - REVISED Vehicle: 1991 MERCEDES-BENZ 350SD 3.4 L6 DIESEL Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR MERCEDES-BENZ 350SD AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most MERCEDES-BENZ 350SD 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 MERCEDES-BENZ 350SD 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 MERCEDES-BENZ 350SD 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 MERCEDES-BENZ 350SD 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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