1991 MERCEDES-BENZ 300SL REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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1991 MERCEDES-BENZ 300SL CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 MERCEDES-BENZ 300SL 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 300SL automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for MERCEDES-BENZ mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1991 MERCEDES-BENZ 300SL vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Mercedes-Benz -> Component Replacement & Adjustment -> AMBIENT AIR TEMPERATURE SENSOR, REPLACE
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

  • Remove cover on air inlet.
  • Remove glove box.
  • Disconnect two p...

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BRAKE SERVICE PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

MERCEDES-BENZ, HYDRAULIC BRAKE SYSTEMS -> HYDRAULIC BRAKE SYSTEMS -> MASTER CYLINDER REPLACEMENT
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

On Vehicles Equipped With Anti-Lock Brakes Refer To "Anti-Lock Brake Systems."

  • Drain fluid from front and rear brakes.
  • Using a suitable screwdriver, lift tangs on warning switch, and disconnect electrical connector.
  • Disconnect and cap brake lin...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Mercedes-Benz -> Fuel Filter Scheduled Maintenance -> 1980-02 Models w/Gasoline Engines -> Normal Service -> Severe Service
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

Normal Service

Replace e...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

DRIVESHAFT, Replace
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

  • Raise vehicle and support.
  • Unscrew exhaust shielding plate.
  • On models with 4MATIC, unscrew exhaust shielding plate.
  • Lift transmission and support.
  • Unscrew hex, head screws and hex nut and remove rear engine carrier with engine mount.
  • Unscrew cross bridge.
  • On all models, loosen propeller shaft clamping nut for approx. two turns without sliding back rubber sleeve (sliding along).
  • Remove front propeller shaft from transmission. Flexible coupling remains on propeller shaft.
  • Remove front propeller shaft from transfer case.
  • Prior to sliding back propeller shaft, loosen vulcanized fitted ...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Alternator, Replace
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

  • Disconnect battery ground cable at battery.
  • Remove drive belt.
  • Remove protective cover, as required, and disconnect electrical connectors.
  • Remove alternator mounting bol...

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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Mercedes-Benz -> Air Bag Off Lamp ->
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

The Air Bag Off should illuminate for 6 seconds when the ignition switch is placed in the On position. The lamp will illuminate when the specified child safety seat has been properly installed on the passenger front seat, indicating that the front passenger ...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

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 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Serpentine Drive Belt, Replace -> External Dampner -> Internal Dampner
Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

Internal Dampner

  • Loosen bolt on tensioner pulley 1/4 to 1/2 turn.
  • Rotate tensioner counterclockwise using suitable tool to remove drive belt.
  • Remove drive belt.
  • Clean and inspect belt surfaces of all pulleys.
  • Reverse procedure to install, noting the following:
    • Torque fan bolt to 72 in. lbs.
    • T...

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COMPONENT LOCATION DIAGRAMS FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

Component location diagrams for most 1991 MERCEDES-BENZ 300SL cars and light trucks sold in the U.S. from 1990+.

ABS & ASR Components Diagram for 1991 MERCEDES-BENZ 300SL  3.0 L6 GASABS & ASR Components Diagram for 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

Components on diagram:
  • Rear Wheel Speed Sensor
  • Front Wheel Speed Sensors
  • ABS/ASR Control Unit
  • Connector X-62/14
  • Connector X-62/15
  • Instrument Panel & Center Console Connectors Diagram for 1991 MERCEDES-BENZ 300SL  3.0 L6 GASInstrument Panel & Center Console Connectors Diagram for 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

    Components on diagram:
  • Connector X-20
  • Connector X-18
  • Connector X-4
  • Connector X-6
  • Connector X-18/3
  • CLICK HERE TO GET FULL ACCESS TO 1991 MERCEDES-BENZ 300SL PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

    OEM drawn wiring diagrams for most 1991 MERCEDES-BENZ 300SL cars and light trucks sold in the U.S.

    1991 MERCEDES-BENZ 300SL  3.0 L6 GAS Wiring Diagram1991 MERCEDES-BENZ 300SL 3.0 L6 GAS Wiring Diagram

    Components on diagram:
  • Speed Sensors
  • Anti-Lock Brake System Hydraulic Unit
  • Anti-Lock Brake System Control Unit
  • 1991 MERCEDES-BENZ 300SL  3.0 L6 GAS Wiring Diagram1991 MERCEDES-BENZ 300SL 3.0 L6 GAS Wiring Diagram

    Components on diagram:
  • Radio
  • Washer Pump
  • Wiper Motor
  • Headlamps
  • Speakers
  • CLICK HERE TO GET FULL ACCESS TO 1991 MERCEDES-BENZ 300SL WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

    OEM TSB listings for most 1991 MERCEDES-BENZ 300SL cars and light trucks sold in the U.S. from 1985+.

    Document: Introduction of Improved Single-Component Windshield/Window Bonding System
    Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Glass, Doors, Hood, Decklid, Tailgate, Liftgate, Locks
  • Document: Instrument Cluster Oil Level Messages
    Vehicle: 1991 MERCEDES-BENZ 300SL 3.0 L6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • CLICK HERE TO GET FULL ACCESS TO 1991 MERCEDES-BENZ 300SL TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 MERCEDES-BENZ 300SL AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 MERCEDES-BENZ 300SL 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 MERCEDES-BENZ 300SL 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 MERCEDES-BENZ 300SL 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 MERCEDES-BENZ 300SL 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

    CLICK HERE TO GET FULL ACCESS TO 1991 MERCEDES-BENZ 300SL SPECIFICATIONS DATA!

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