Mercedes-Benz M103 Engine Manual | Cover
  • Mercedes-Benz M103 Engine Manual | Cover
  • Mercedes-Benz M103 Engine Manual | Removal and installation of the timing cover.
  • Mercedes-Benz M103 Engine Manual | Camshaft Removal and Installation
  • Mercedes-Benz M103 Engine Manual | Checking for obstructions in the fuel distributor intake duct
  • Mercedes-Benz M103 Engine Manual | Replacing the Oil Pump Chain

Mercedes Benz Service Manual Engine 103

$20.00

Workshop manual for the Mercedes Benz M103 6-cylinder 2.6 and 3.0-liter engine mounted on W107, W124, W126 and W201 Series models, in PDF format.

This manual is useful for performing repair and maintenance tasks on all Mercedes Benz vehicles equipped with the M103 engine.

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Mercedes-Benz Service Manual Engine 103

Workshop manual for the M 103 engine with 6 cylinders 2.6 and 3.0 liters.

Conceived basically to be used by the trained personnel of the official workshops of the brand, it is developed in 468 pages in English that describe the repair tasks and the parts replacement procedures of the engines 103.940, 103.942, 103.981, 103.982, 103.983 and 103.985. It contains precise indications of utility both for those amateurs who need to perform maintenance work, experienced mechanics or experts in DIY of classic cars, reporting in detail the necessary processes in individual stages with the help of images, diagrams and tables. Contents developed in the different chapters:

General, technical data. Crankcase and cylinder head. Crankshaft assembly. Engine timing, valves. Mechanically/electronically controlled gasoline injection system (CIS-E). Air cleaner. Belt drive. Intake manifold. Exhaust manifold. Engine electrical system. Engine lubrication. Engine cooling. Engine suspension. Throttle control. Fuel system. Exhaust system.

Mercedes Benz vehicles equipped with M 103 engine:

W107 Series: 300 SL
W124 Series: 260 E, 260 E 4Matic, 300 E, 300 E 4Matic, 300 E 2.6, 300 CE, 300 TE and 300 TE 4Matic
W126 Series: 260 SE, 300 SE and 300 SEL
W129 Series: 300 SL
W201 Series: 190 E 2.6
W463 Series: 300 GE

The workshop manual apropiated for repair and maintenance operations of the Mercedes Benz M103 engine.

Now with a bookmark index that allows navigation through the different chapters, this new digital version was available in PDF format is identical in content to the paper originally published in the advantage of instant download access. Supports reading from the monitor of a personal computer, tablet or smartphone and printing of pages that are necessary. Article illustrations allow to obtain a notion of the quantity and quality of the information.

Article Characteristics:

Format: PDF
Language: English
Pages: 468
File size: 27.3 MB
Shipping Method: Download Link

Mercedes-Benz M103 engine manual | Index

This index lists the main sections and job numbers included in the Mercedes Benz Service Manual Engines M103

00 General, technical data

  • 00-005 Instructions for use of service manual
  • 00-010 Engine and vehicle identification
  • 00-015 Vehicle identification number locations
  • 00-020 Technical data

01 Crankcase and cylinder head

  • 01-008 Opening hood, setting vertical, warnings
  • 01-010 Testing Compression Pressure
  • 01-015 Testing cylinders for leaks
  • 01-030 Draining, replacing engine (oil capacities)
  • 01-140 Replacing freeze plug in engine block
  • 01-210 Removing, installing timing cover
  • 01-212 Removing, installing top front cover
  • 01-222 Removing, installing rear main seal cover
  • 01-310 Removing, installing Oil Sump or Front Axle Housing (4MATIC)
  • 01-415 Removing, installing Cylinder Head

03 Crankshaft assembly

  • 03-310 Checking, Renewing and Tightening Conrod Bolts
  • 03-324 Renewlng Front Crankshaft Radial Seal
  • 03-327 Renewing Rear Crankshaft Radial Seal
  • 03-342 Removing, Installing Belt Pulley, Flywheel Damper and Hub
  • 03-410 Removing, Installing Flywheel of Driven Plate
  • 03-420 Machining Flywheel

05 Engine timing, valves

  • 05-220 Removing, Installing Camshaft
  • 05-250 Removing, Installing Valve Springs
  • 05-270 Renewing Valve Stem Seals
  • 05-310 Removing, Installing Chain Tensioner
  • 05-320 Renewing Timing Chain
  • 05-330 Removing, Installing Tensioning Rail
  • 05-335 Removing, Installing Guide Rail
  • 05-460 Removing, Installing Crankshaft Gear

07.3 Mechanically/electronically controlled gasoline injection system (CIS-E)

  • 07.3-100 Checking idling speed, readjusting or special emission test (ASU)
  • 07.3-110 Testing, regulating engine
  • 07.3-111 Performing cylinder comparison test with engine tester SUN 2110
  • 07.3-112 Testing electronic idling speed control
  • 07.3-115 Testing engine output and emissions on drum dynamometer
  • 07.3-117 Determining fuel consumption by driving on road
  • 07.3 120 Checking fuel pressures and for internal leaks
  • 07.3-121 Testing electrical components of CIS-E injection system
    • A. Without trouble diagnosis by means of on-off ratio
    • B. With trouble diagnosis by means of on-off ratio
  • 07.3-122 Testing throttle (orifice) in fuel distributor for unobstructed passage
  • 07.3-125 Testing starting unit
  • 07.3-126 Testing starting valve activation
  • 07.3-127 Performing cold start
  • 07.3-128 Electric wiring diagrams
  • 07.3-130 Testing fuel pump
    • A. Delivery capacity
    • B. Fuel pressure
  • 07.3-135 Testing injection valves
  • 07.3-152 Testing, replacing throttle valve switch
  • 07.3-160 Perform fuel quantity comparison measurement
  • 07.3-165 Testing relay fuel pump
  • 07.3-200 Removal and installation of mixture control unit
  • 07.3-205 Replacing fuel distributor
  • 07.3-207 Replacing sealing ring for control piston
  • 07.3-215 Removal and installation of injection valves
  • 07.3-220 Replacing air volume meter
  • 07.3-225 Removal and installation of mixture control unit with air guide housing
  • 07.3-230 Removal and installation of throttle valve housing
  • 07.3-245 Replacing, centering air flow sensor plate, testing and adjusting zero position of air flow sensor plate
  • 07.3-250 Removal and installation of control unit
  • 07.3-255 Replacing electrohydraulic actuator (EHA)
  • 07.3-268 Replacing rubber rings or rubber buffers for fuel pump package
  • 07.3-269 Removal and installation of fuel pump package
  • 07.3-270 Removal and installation of fuel accumulator
  • 07.3-275 Removal and installation of fuel filter
  • 07.3-280 Removal and installation of fuel pump

09 Air cleaner

  • 09-400 Removal and installation of air cleaner
  • 09-402 Renewing of intake scoop

13 Belt drive

  • 13-342 Checking condition of poly V-belt and renewing
  • 13-345 Removing, installing tensioning device

14 Intake manifold, exhaust manifold

  • 14-001 Distinguishing features of vehicles with exhaust emission control system
  • 14-050 Function of emission control system
  • 14-116 Checking oxygen senso failure indication USA
  • 14-450 Removal and installation of intake manifold, replacement of gasket
  • 14-455 Renewal of intake manifold (intake manifold removed)
  • 14-470 Removal and installation of exhaust manifold
  • 14-480 Renewal of oxygen sensor

15 Electrical system, engine

  • 15-505 Notes regarding jobs on breakerless transistorised ignition system
  • 15-510 Function of the electronic ignition system with variable characteristics (EZL)
  • 15-515 Checking ignition timing
  • 15-525 Evaluation of oscilloscope image
  • 15-530 Renewing spark plugs
  • 15-535 Removal and installation of high-voltage distributor
  • 15-540 Checking the electronic ignition system with variable characteristics (EZL)

18 Engine lubrication

  • 18-002 Engine oil and filter change
  • 18-110 Removing, installing oil filter
  • 18-210 Removing, installing oil pump
  • 18-212 Renewing oil pump chain
  • 18-215 Removing, installing oil pressure relief valve in oil pump
  • 18-330 Removing, installing oil level sensor
  • 18-415 Renewing oil level return lock

20 Engine cooling

  • 20-010 Draining, pouring in coolant - Antifreeze protection table
  • 20-017 Testing cooling system for leaks
  • 20-110 Removing, installing coolant thermostat
  • 20-210 Removing, installing coolant pump
  • 20-312 Removing, installing viscous fan clutch
  • 20-420 Removing, installing radiator
  • 20-450 Removing, installing overflow tank

22 Engine suspension

  • 22-211 Removing, installing front engine mounts
  • 22-212 Removing, installing rear engine mounts
  • 22-213 Rear engine mount (Freeway hop) Model 124 USA
  • 22-220 Setting engine stop, Model 124 4MATIC

30 Throttle control

  • 30-300 Adjusting control linkage
  • 30-315 Removal and installation of accelerator pedal with front wall mounting
  • 30-325 Removal, installation and adjustment of Bowden cable

47 Fuel system

  • 47-010 Operation of fuel tank with surge bowl
  • 47420 Operation of fuel gage pickup
  • 47-030 Operation of fuel tank positive and negative ventilation
  • 47-100 Removal and installation of fuel tank
  • 47-120 Removal and installation of fuel gage pickup
  • 47-200 Function of fuel evaporation system
  • 47-300 Checking the fuel evaporation system
  • 47-400 Function of fuel cooler

49 Exhaust system

  • 49-100 Removal, installation of exhaust system
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