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1990 MERCEDES-BENZ 350SDL CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Maintenance Lamp Reset

A/C & HEATER SERVICE PROCEDURES FOR 1990 MERCEDES-BENZ 350SDL AUTOMOBILES
A/C & Cooling System Maintenance -> Mercedes-Benz -> 1990-2004
Vehicle: 1990 MERCEDES-BENZ 350SDL 3.4 L6 DIESEL
NOTE: Some Models Are Eq...
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BRAKE SERVICE PROCEDURES FOR 1990 MERCEDES-BENZ 350SDL AUTOMOBILES
MERCEDES-BENZ, POWER BRAKES -> POWER BRAKE UNIT REPLACEMENT
Vehicle: 1990 MERCEDES-BENZ 350SDL 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 1990 MERCEDES-BENZ 350SDL AUTOMOBILES
Mercedes-Benz -> Fuel Filter Replacement -> Diesel Engines -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 1990 MERCEDES-BENZ 350SDL 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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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 MERCEDES-BENZ 350SDL AUTOMOBILES
Mercedes-Benz -> Brake Assist System (BAS)/Acceleration Slip Regulation (ASR) Or Brake Assist System (BAS)/Electronic Stability Program (ESP) Warning Lamp ->
Vehicle: 1990 MERCEDES-BENZ 350SDL 3.4 L6 DIESEL
The Brake Assist System (BAS)/Acceleration Slip Regulation (ASR) or Brake Assist System (BAS)/Electronic Stability Program (ESP) warning lamp, will illuminate when the ignition switch is placed in the On position to indicate the warning lamp is operational. The lamp should go off when the engine is started. If the warning lamp remains on after the engine has been started or has come on while driving the vehicle, a fault in the BAS, ASR or ESP h...
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TECHNICAL SERVICE BULLETINS FOR 1990 MERCEDES-BENZ 350SDL AUTOMOBILES
OEM TSB listings for most 1990 MERCEDES-BENZ 350SDL cars and light trucks sold in the U.S. from 1985+.
Document: Introduction of Improved Single-Component Windshield/Window Bonding System Vehicle: 1990 MERCEDES-BENZ 350SDL 3.4 L6 DIESEL Auto Systems: |
Document: Instrument Cluster Oil Level Messages Vehicle: 1990 MERCEDES-BENZ 350SDL 3.4 L6 DIESEL Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 MERCEDES-BENZ 350SDL AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 MERCEDES-BENZ 350SDL 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 1990 MERCEDES-BENZ 350SDL 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 1990 MERCEDES-BENZ 350SDL 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 1990 MERCEDES-BENZ 350SDL 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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