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Mercedes-Benz Service Manual Engine M110
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Workshop manual for the Mercedes-Benz M110 2.8-liter inline 6-cylinder engine with dual overhead camshafts (DOHC)
Contains official factory procedures for complete disassembly, engine rebuilding, valve adjustment, cam timing setup, fuel injection system service, and precise technical specifications.
PDF in English | 940 pages | Digital delivery available immediately.
- Complete engine workshop manual (not an excerpt)
- Factory specifications and service values
- Detailed technical diagrams
- Suitable for repair, maintenance, and restoration work
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Digital delivery
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Mercedes-Benz Service Manual Engine M110 | PDF
Workshop manual for the Mercedes-Benz M110 2.8-liter inline 6-cylinder engine with double overhead camshafts (DOHC).
The M110 holds a special place among classic Mercedes-Benz 6-cylinder engines and was one of the brand’s most distinctive powerplants throughout the 1970s and 1980s. Its 24-valve DOHC configuration made it a technically advanced engine for its time, with applications in sedans, coupes, roadsters and luxury models from the period.
This digital PDF edition brings together service information for complete disassembly, inspection, adjustment, timing synchronization, injection system work and workshop technical specifications, covering engines 110.921, 110.922, 110.923, 110.924, 110.931, 110.932, 110.981, 110.982, 110.983, 110.984, 110.985, 110.986, 110.987, 110.991, 110.992 and 110.993.
If you would like to review the scope of the contents in greater detail before buying, you can check the Full Index tab, where the sections and job entries included in this edition are listed.
Main topics covered in the Mercedes-Benz M110 engine manual
- Engine technical data
- Engine identification
- Complete disassembly and assembly
- Engine block, pistons and crankshaft
- DOHC cylinder head and valve train
- Timing chain and synchronization system
- Solex carburetion system
- Bosch mechanical fuel injection system (CIS)
- Ignition system
- Lubrication system
- Cooling system
- Intake and exhaust system
- Torque specifications
- Tolerances and wear limits
- Diagnostic procedures
Mercedes-Benz vehicles fitted with the M110 engine
- W107 series: 280 SL and 280 SLC
- W114 series: 280, 280 E, 280 C and 280 CE
- W116 series: 280 S, 280 SE and 280 SEL
- W123 series: 280, 280 E, 280 TE, 280 C and 280 CE
- W126 series: 280 S, 280 SE and 280 SEL
- W460 series: 280 GE
Important: This is a general reference list of vehicles that used versions of the M110 engine. Please verify the exact engine code before purchasing.
This digital PDF edition includes an expandable bookmarked index that makes chapter navigation easier. It preserves the content of the original printed edition, with the added benefit of instant download and the ability to consult it on a computer, tablet or mobile phone, or print only the pages needed.
Product details:
- Format: PDF
- Language: English
- Pages: 940
- File size: 126 MB
- Delivery method: Download link
Frequently asked questions about the Mercedes-Benz M110 engine manual
Does this edition preserve the original technical format of the manual?
Yes. The content is presented in English and preserves the workshop terminology, technical structure and job numbering of the original Mercedes-Benz edition, making it easier to follow the procedures as they were originally published.
What technical references are included in this edition?
This edition brings together technical information for the Mercedes-Benz M110 engine and service procedures applicable to its different configurations, so it can also be useful as reference material for several versions of this inline 6-cylinder engine fitted to different Mercedes-Benz models.
Does the manual include repair and maintenance procedures?
Yes. It includes procedures for disassembly, inspection, adjustment, assembly, diagnosis, component replacement and workshop technical specifications.
What topics are included in the M110 engine manual?
It includes technical data, engine block and cylinder head, crankshaft assembly, timing and valve train, fuel system, intake, exhaust, electrical system, lubrication, cooling and other related engine systems.
Is digital delivery of the Mercedes-Benz M110 manual immediate?
Yes. Once the purchase is completed, the manual is delivered in PDF format through a digital download link.
Mercedes-Benz M110 engine manual | Index
This index lists the main sections and job numbers included in the Mercedes-Benz Service Manual Engine M110.
Each entry is listed in accordance with the manual’s original technical layout and numbering.
00 General, technical data
- 00-005 Instructions for use of service manual
- 00-010 Engine number and vehicle identification tag location
- 00-015 Technical data
01 Crankcase and cylinder head
- 01-001 Engine and model survey
- 01-010 Checking compression
- 01-015 Checking cylinders for leaks
- 01-020 Evaluating cylinder bores
- 01-025 Measuring oil consumption
- 01-030 Removal and installation of engine (oil filling capacity)
- 01-040 Engine vent - Description of function
- 01-110 Checking, drilling and honing cylinder bores
- 01-120 Grinding crankcase mating surface
- 01-130 Knocking-out and inserting steel balls for main oil ducts
- 01-220 Installation and centering of intermediate flange
- 01-310 Complete removal and installation of oil pan
- 01-415 Removal and installation of cylinder head
- 01-416 Cylinder head measuring sensor box
- 01-418 Facing cylinder head mating surface
- 01-420 Pressure testing cylinder head
- 01-470 Removal and installation of camshaft housing
- 01-471 Association camshaft housing and camshafts
- 01-472 Facing camshaft housing
- 01-490 Cylinder head and camshaft housing illustrated table
03 Crankshaft assembly
- 03-310 Checking, replacing and tightening conrod bolts
- 03-313 Repairing and squaring connecting rods
- 03-316 Removal and installation of piston
- 03-318 Checking and reconditioning crankshaft
- 03-320 Mounting of crankshaft
- 03-324 Replacing front crankshaft radial oil seal
- 03-327 Replacing rear crankshaft radial oil seal
- 03-330 Removal and installation of radial ball bearing and closing ring in crankshaft
- 03-340 Removal and installation of pulley, vibration damper and balancing disc
- 03-344 Static balancing of balance disc
- 03-345 Checking and correcting adjustment of TDC transmitter
- 03-350 Removal and installation of crankshaft sprocket
- 03-410 Removal and installation of flywheel and driven plate
- 03-420 Machining flywheel
- 03-430 Replacing ring gear
- 03-440 Static balancing of flywheel
05 Engine timing, valvetrain
- 05-210 Checking and adjusting valve clearance
- 05-212 Replacing threaded bushing and valve adjusting screw
- 05-215 Checking and adjusting camshaft timing
- 05-220 Removal and installation of camshafts
- 05-225 Grinding camshaft bearing journals
- 05-230 Removal and installation of rocker arms
- 05-250 Removal and installation of valve springs
- 05-260 Checking valve springs
- 05-270 Replacing valve stem seals
- 05-280 Checking and machining valves
- 05-285 Inspecting, assigning and installing valve guides
- 05-290 Renewal of valve seat rings
- 05-291 Machining valve seats
- 05-310 Removal and installation of chain tensioner
- 05-320 Replacing timing chain
- 05-330 Removing and installing tensioning rail
- 05-340 Removal and installation of side rails
- 05-410 Removal and installation of helical gear shaft
- 05-412 Removal and installation of intermediate gear shaft
- 05-432 Removal and installation of intermediate wheel
- 05-440 Removal and installation of guide wheel
- 05-450 Removal and installation of distributor housing with distributor drive gear
- 05-490 Illustrated table of chain tensioner, timing chain and drive gears
07-2 Carburetor, fuel pump, throttle linkage
- 07_2-090 Layout and function Solex carburetor 4 A 1
- 07_2-092 Technical modifications (revisions) of model years
- 07_2-100 Adjusting idle speed
- 07_2-101 Synchronizing idle speed systems
- 07_2-102 Checking idle speed shutoff valves for function
- 07_2-104 Removal and installation of idle speed shutoff valves
- 07_2-110 Regulation of engine
- 07_2-125 Adjusting choke
- 07_2-128 Testing starting device (choke) for function (cold start)
- 07_2-130 Testing and adjusting TN choke for function
- 07_2-132 Adjusting choke rod
- 07_2-134 Testing pulldown diaphragm for leaks
- 07_2-138 Removal and installation of TN choke
- 07_2-140 Removal and installation of choke
- 07_2-142 Checking and correcting choke housing mark
- 07_2-145 Checking choke cover-stepped heater
- 07_2-147 Subsequent installation of choke cover-stepped heater
- 07_2-150 Adjusting accelerating pump
- 07_2-152 Checking suction valve and delivery valves of accelerating pump for leaks
- 07_2-154 Removal and installation of accelerating pump diaphragm
- 07_2-156 Subsequent installation of vapor bubble draw-off for accelerating pump (USA 1975/76 only)
- 07_2-170 Checking and correcting air valve adjustment of stage II
- 07_2-172 Checking and correcting jet needle adjustment of stage II
- 07_2-174 Removal and installation of restoring spring for air valve of stage II
- 07_2-175 Subsequent installation of modified adjusting pin for air valve preload of stage II
- 07_2-176 Subsequent installation of bypass bores of stage II
- 07_2-180 Adjusting float level
- 07_2-182 Checking float chamber external venting system
- 07_2-186 Checking fuel return valve
- 07_2-190 Checking fuel return valve
- 07_2-192 Removal and installation of carburetor cover
- 07_2-194 Removal and installation of carburetor
- 07_2-210 Checking fuel pump
- 07_2-212 Removal and installation of fuel pump
- 07_2-300 Adjustment of regulating linkage
- 07_2-310 Removal and installation of engine longitudinal regulating shaft
- 07_2-320 Removal and installation of front wall regulating shaft
- 07_2-330 Removal and installation of accelerator pedal
07-3 Mechanical gasoline injection system (CIS)
- 07_3-100 Adjustment of idle speed
- 07_3-105 Checking and adjusting on-off ratio
- 07_3-110 Checking and regulating engine
- 07_3-120 Checking fuel pressures and for internal leaks
- 07_3-125 Checking choke system
- 07_3-130 Checking delivery capacity of fuel pump
- 07_3-135 Checking injection valves
- 07_3-140 Checking decel shutoff
- 07_3-145 Checking idle speed stabilization on engines with refrigerant compressor
- 07_3-150 Checking idle speed stabilization on engines with refrigerant compressor
- 07_3-160 Checking fuel distributor for constant delivery
- 07_3-165 Checking fuel pump relay with electronic rpm regulation (breakaway)
- 07_3-199 Survey mixture preparation
- 07_3-200 Removal and installation of mixture controller
- 07_3-205 Replacement of fuel distributor
- 07_3-210 Reconditioning of system pressure regulator and pressure compensating valve
- 07_3-215 Removal and installation of injection valves
- 07_3-220 Replacement of air flow sensor
- 07_3-225 Removal and installation of mixture controller with air guide housing
- 07_3-230 Removal and installation of throttle valve housing
- 07_3-242 Subsequent installation of safety switch on air flow sensor
- 07_3-245 Replacement, centering and zero position of air flow sensor plate
- 07_3-270 Removal and installation of fuel reservoir
- 07_3-275 Removal and installation of fuel filter
- 07_3-280 Removal and installation of fuel pump
- 07_3-281 Replacement of holder for fuel pump, fuel filter and fuel reservoir
- 07_3-282 Conversion of fuel pump assembly
- 07_3-283 Subsequent installation of separate check valve on fuel pump
- 07_3-500 Operation
07-5 Ignition system
- 07_5-500 Checking and adjusting closing angle (dwell angle) and firing point
- 07_5-503 Removing, preventing formation of layer on breaker points (breaker-controlled transistorized ignition)
- 07_5-505 Renewing contact breakers (breaker points)
- 07_5-510 Removal and installation of ignition distributor
- 07_5-519 General description of breaker controlled transistorized ignition (J) (USA)
- 07_5-520 Testing breaker-controlled transistorized ignition (J) (USA)
09 Air filter
- 09-400 Removal and installation of air cleaner
- 09-400a Functional description of intake air preheating system
- 09-405 Removal and installation of thermostat for intake air preheater
- 09-410 Removal and installation of air filter
- 09-415 Removal and installation of intake pipe
13 Belt drive
- 13-335 Instructions for renewing and tensioning V-belts
- 13-340 Renewal and tensioning of V-belt
14 Intake and exhaust manifold, emission control system
- 14-001 Functional characteristics
- 14-050 Operation
- 14-050a Operation
- 14-050b Operation
- 14-100 Test program
- 14-100a Test program
- 14-100b Test program
- 14-150 Wiring diagrams
- 14-200 Removal and installation of catalyst
- 14-200a Removal and installation of catalyst
- 14-200b Removal and installation of catalyst
- 14-250 Removal and installation of air pump
- 14-250a Removal and installation of air pump
- 14-300 Removal and installation of anti-backfire valve
- 14-450 Removal and installation of intake manifold, replacement of gasket
- 14-455 Renewing intake manifold (intake manifold removed)
- 14-470 Removal and installation of exhaust manifold
- 14-472 Survey exhaust manifold
- 14-475 Testing EGR
- 14-500 Operation of EGR
15 Electrical system, engine
- 15-501 Testing and adjusting firing point
- 15-510 Removal and installation of ignition distributor
- 15-528 Notes concerning jobs on breakerless transistorized ignition system TSZ 4 and TSZ 8 u
- 15-530 General description of breakerless transistorized coil ignition system TSZ 4 and TSZ 8 u
- 15-531 Notes concerning use of test instruments on breakerless transistorized ignition system without pre-resistors TSZ 8 u
- 15-562 Testing breakerless transistorized ignition
18 Engine lubrication system
- 18-005 Oil circuit, oil pressure, pressure relief valves and oil filter
- 18-020 Additional installation of oil pressure relief valve in main oil duct
- 18-030 Removal and installation of outer oil return line
- 18-120 Checking thermostat in oil filter
- 18-125 Removal and installation of thermostat in oil filter upper section
- 18-210 Removal and installation of oil pump
20 Engine cooling system
- 20-005 Coolant circuit and engine cooling
- 20-010 Draining and filling coolant - Anti-freeze table
- 20-015 Cleaning cooling system
- 20-210 Removal and installation of water pump
- 20-310 Temperature controlled visco-fan clutch
- 20-330 Magnetic fan clutch
- 20-420 Removal and installation of radiator
- 20-425 Repairing radiator
- 20-430 Testing radiator or expansion tank closing cap
22 Engine suspension
- 22-211 Removal and installation of front engine mount
- 22-212 Removal and installation of rear engine mount
- 22-240 Removal and installation of engine shock absorber
30 Accelerator control
- 30-300 Adjustment of regulating linkage
- 30-310 Removal and installation of engine longitudinal regulating shaft
- 30-320 Removal, installation and adjustment of chassis regulating shaft
- 30-330 Removal and installation of accelerator pedal
- 30-335 Lubrication of regulating linkage and regulating shafts
47 Fuel system
- 47-700 Removal and installation of fuel tank
- 47-700a Removal and installation of fuel tank
- 47-705 Removal and installation of fuel expansion tank
- 47-705a Removal and installation of fuel expansion tank (model 114)
- 47-710 Removal and installation of immersion tube transmitter
- 47-710a Removal and installation of immersion tube transmitter
- 47-715 Functional description of immersion tube transmitter
- 47-715a Functional description of immersion tube transmitter for fuel gauge
- 47-720 Functional description of positive and negative venting of fuel tank
- 47-720a Functional description of fuel tank positive and negative venting system (model 114)
- 47-800 Fuel evaporation control system (AUS) (J) (USA)
- 47-800a Fuel evaporation system (J) (USA)
- 47-850 Fuel cooler (J) (USA)
49 Exhaust system
- 49-100 Removal and installation of exhaust system
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Workshop manual for the Mercedes-Benz M110 2.8-liter inline 6-cylinder engine with dual overhead camshafts (DOHC)
Contains official factory procedures for complete disassembly, engine rebuilding, valve adjustment, cam timing setup, fuel injection system service, and precise technical specifications.
PDF in English | 940 pages | Digital delivery available immediately.
- Complete engine workshop manual (not an excerpt)
- Factory specifications and service values
- Detailed technical diagrams
- Suitable for repair, maintenance, and restoration work