Service manual Mercedes-Benz M266 Engine | Up to 2020 incl.

Remove/install accelerator pedal ENGINE 266.9, 640.9 in MODELS 169.0 /3, 245.2
Engine cooling system – check fluid level, adjust to correct level. Inspect 1.12.09 anticorrosion/antifreeze protection, adjust to correct concentration ENGINES 102 in MODEL 460, 461.217 /219 /223 /227 /229 /238 /239 /249 /266 /267, 463.200 /204 /220 /221 /224 /225 ENGINES 103 in MODEL 463.207 /227 /228 ENGINES 104 in MODEL 463.208 /230 /231 ENGINES 110 in MODEL 460 ENGINES 115 in MODEL 460 ENGINES 117 in MODEL 463.228 ENGINES 602 in MODEL 460, 461.321 /322 /323 /326 /327 /328 /329 /335 /336 /337 /338 /341 /365 /366 /367 /368 /401 /402 /403 /404 /405 /450 /451 /452 /454 /455 /456 /458 /459, 463.304 /324 /325 ENGINES 603 in MODEL 463.300 /307 /320 /321 /327 /328 ENGINES 606 in MODEL 463.308 /330 /331 ENGINES 616 in MODEL 460 ENGINES 617 in MODEL 460 ENGINES 612.965 in MODEL 463.322 /323 ENGINES 612.966 in MODEL 461.302 /331 /332 /342 /345 ENGINES 628.962 in MODELS 463.309 /332 /333
Bearing diagram for crankshaft Engine 266.920/940/960/980 Engine 271.951 in model 906 Engine 271 Engine 640
Open close coolant line coupling Engine 133, 139, 152, 156, 157, 159, 176, 177, 178, 254, 256, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 282, 607, 608, 622, 626, 629, 640, 642, 646, 651, 654, 656, 780
Overview – Check engine oil level Engine 111, 112, 113, 133, 137, 139, 152, 156, 157, 159, 176, 177, 178, 254, 256, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 282, 285, 607, 608, 611, 612, 626, 628, 629, …
Check leaktightness of natural gas system Engine 266 in model 245 with code 924 (Bivalent natural gas drive) Engine 271 in model 211, 212 with code 924 (Bivalent natural gas drive) Engine 274.9 in model 212 with code 924 (Bivalent …
General information on inspecting cylinder walls Engine 111, 122, 132.9, 134, 135, 160.9, 200, 260, 264, 266, 270, 271, 274, 276.9, 281, 282, 602, 604, 605, 606, 607, 608, 611, 612, 613, 622, 626, 628, 629, 639, 640, 646, 647, 648, 651, …
Damage profiles for a poly-V belt Engine 102, 103, 104, 111, 112, 113, 119, 120, 133, 137, 139, 152, 155, 156, 157, 159, 166, 176, 177, 178, 254, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 281, 282, 285, …
Drain/pour in coolant Engine 266.980 in model 169.0/3, 245.2
Open and close coupling Engine 133, 139, 152, 156, 157, 176, 177, 178, 254, 256, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 282, 607, 608, 626, 629, 640, 642, 646, 651, 654, 656, 780
Remove/install engine cover ENGINES 266.980 in MODELS 169.0 /3, 245.2
Removing/installing the air intake tube ENGINE 266.920 /940 /960 /980 in MODELS 169.0 /3, 245.2
Interference fit of crankshaft bearing cap Engine 111, 601.943, 602.980/982/983/984/985, 604, 605, 606 Engine 166, 668 Engine 266.920/940/960/980 Engine 271.951 in model 906 Engine 271 Engine 272.979 in model 906 Engine …
Draining/filling with coolant ENGINES 266.920 /940 /960 in MODEL 169.0 /3, 245.2
Overview of service intervals for gasoline engines depending on engine oil specification Engine 111, 112, 113, 132, 133, 137, 152, 156, 157, 159, 177, 178, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 281, 285 Engine 112, 113, 157, 273, 279 in model 463
Check engine oil level using on-board oil dipstick Engine 111, 112, 113, 133, 152, 156, 157, 177, 178, 266, 270, 271, 272, 273, 274, 276.8/9, 278, 279, 607, 611, 612, 626, 628, 629, 640, 642, 646, 651
Overview of service intervals for gasoline engines depending on engine oil specification Engine 111, 112, 113, 132, 133, 137, 152, 156, 157, 159, 177, 178, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 281, 285 Engine 112, 113, 157, 273, 279 in model 463
General information on leak testing for natural gas systems ENGINE ENGINE ENGINE ENGINE 266 in MODEL 245 with CODE 924 (Bivalent natural gas drive) 270 in MODEL 242 with CODE 924 (Monovalent natural gas drive) 271 in MODEL 211, 212 with CODE 924 (Bivalent natural gas drive) 274.9 in MODEL 212 with CODE 924 (Provision for natural gas operation)
Pour in coolant and bleed cooling system Engine 111, 112, 113, 137, 166, 266 Engine 112, 113 Engine 611, 612, 613, 640, 646, 647, 648, 668 Engine 780 in model 169, 197, 242
Remove/install ME-SFT [ME] control unit ENGINE 266.920 /940 /960 /980 in MODELS 169.0 /3, 245.2
Notes on the assessment of pistons and piston rings Engine 111, 112, 113, 133, 137, 139, 152, 155, 156, 157, 159, 166, 176, 177, 178, 254, 256, 260, 264, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 282, 285 Engine 112, 113, 157, …
Inspect cooling system for leaks Engine 266.920/940/960/980 in model 169.0/3, 245.2
Check main circuit coolant level Engine 266, 640, 780 in model 169, 245
Notes on coolant Engine 100, 102, 103, 104, 110, 111, 112, 113, 114, 115, 116, 117, 119, 120, 121, 123, 127, 129, 130, 133, 137, 139, 152, 155, 156, 157, 159, 166, 176, 177, 178, 180, 254, 256, 260, 264, 266, …
Remove air filter install ENGINE 266.920 /940 /960 /980 in MODEL 169.0 /3, 245.2
Replace coolant 09.06.2016 Model 460 with engine 102.964 Model 460 with engine 102.987 Model 460 with engine 110 Model 460 with engine 115 Model 460 with engine 602.930 Model 460 with engine 616 Model 460 with engine 617 Model 460, 461.219 with engine 102.981 Model 461.217 with engine 102.997 Model 461.227/229/238/239/249/266/267 with engine 102.979 Model 461.227/229/238/239/249/266/267 with engine 102.996 Model 461.302/331/332/342/345 with engine 612.966 Model 461.321/322/326/327/335/336/365/366 with engine 602.983 Model 461.323/328/329/337/338/341/367/368/403/404/450/451/452/454/455/458/459 with engine 602.94 Model 461.401/402/405 with engine 602.939 Model 461.456 with engine 602.938 Model 463.204/224/225 with engine 102.989 Model 463.207/227/228 with engine 103.987 Model 463.208/230/231 with engine 104.996 Model 463.220/221 with engine 102.965 Model 463.228 with engine 117.965 Model 463.300/320/321 with engine 603.972 Model 463.304/324/325 with engine 602.931 Model 463.307/327/328 with engine 603.931 Model 463.308/330/331 with engine 606.964 Model 463.309/332/333 with engine 628.962 Model 463.322/323 with engine 612.965
Detach/attach lower engine compartment paneling MODEL 169.0 /3, 245.2 with ENGINE 266.920 /940 /960 /980 with CODE (484) Rough road package
Remove/install lower engine compartment lining Model 169.0/3, 245.2 with engine 266.920/940/960/980, 780 except code 484 (Rough road package)
Leaktightness test of natural gas system Engine 266.960 in model 245.233 with code 924 (Bivalent natural gas drive)
Tighten threaded connections for high-pressure gas pipes 30.09.2013 ENGINE ENGINE ENGINE ENGINE ENGINE 1 Union nut 266 in MODEL 245 with CODE 924 (Bivalent natural gas drive) 270 in MODEL 242 with CODE 924 (Monovalent natural gas drive) 271 in MODEL 211 with CODE 924 (Bivalent natural gas drive) 271.9 in MODEL 212.0 with CODE 924 (Bivalent natural gas drive) 274.9 in MODEL 212 with CODE 924 (Provision for natural gas operation)
Notes on sealant path for cylinder head cover Engine 122.9 in model 454.0 Engine 200 in model 470 Engine 266 Engine 272.979 in model 906 Engine 699 in model 470, 471
Risk of explosion and poisoning caused by the melting down or improper handling of sodium-filled valves. Risk of injury caused ENGINE 111.943/944/973/975, 112, 113, 137.970, 155, 156, 159, 166.940/960/961/990/991/995, 266, 646, 647, 648
Service Information: Spark plug connector grease Engine 104, 111, 112, 113, 119, 120, 133, 137, 152, 155, 156, 157, 159, 166, 176, 177, 178, 266, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 285
Determine oil consumption Engine 156, 166, 260, 266, 270, 271, 272, 273, 274, 282
Marking of camshaft bearing caps Engine 111.948/978 Engine 111.9 Engine 120 Engine 166 Engine 266.920/940/960/980 Engine 601.942/970 Engine 668.914/940/941/942
0266 – Retrofitting a second fuel pump A. 124.083 B. 201.034 Engine 102 KE in model
O2 sensor altered ENGINES 266.920 /940 /960 in MODEL 169
Remove/install rear engine mount ENGINE 266.920 /940 /960 /980 in MODEL 169.0 /3, 245.2
Replace rear muffler ENGINE 266.980 in MODELS 169.0 /3, 245.2
Remove/install front axle carrier MODEL 169.0 /3 with ENGINE 266.920 /940 /960 /980, 640.940 /941 /942 MODEL 245.2 with ENGINE 266.920 /940 /960 /980, 640.940 /941
Remove/install exhaust manifold with catalytic converter ENGINES 266.920 /940 /960 in MODEL 169.0 /3, 245.2
Secure the radiator ENGINE 640, 266 in MODEL 169, 245
Remove/install oxygen sensor ENGINES 266.920 /940 /960 in MODEL 169.0 /3, 245.2 O2-Sensor downstream of catalytic converter
Remove/install expansion reservoir Engine 266.920/940/960/980 in model 169.0/3, 245.2
Replace rear muffler ENGINE 266.920 /940 /960 in MODEL 169.0 /3, 245.2
Removing and installing complete exhaust system ENGINE 266.980 in MODELS 169.0 /3, 245.2
Remove/install transmission TRANSMISSION 716.5 in MODEL 169.0 /3, 245.2 with ENGINE 266.920 /940 /960
Remove/install rear underbody paneling MODEL 245.233 with ENGINE 266.960 with CODE (924) Bivalent natural gas drive
Lower raise engine with front axle carrier ENGINES 266.980 in MODEL 169.0 /3, 245.2
Removing and installing exhaust system complete ENGINE 266.940 /960 in MODEL 169.0 /3, 245.2
Removing and installing exhaust system complete ENGINE 266.920 in MODEL 169.0 /3, 245.2
Remove/install oxygen sensor ENGINES 266.920 /940 /960 in MODEL 169.0 /3, 245.2 O2-Sensor upstream of catalytic converter
Lower raise engine with front axle carrier ENGINES 266.920 /940 /960 in MODEL 169.0 /3, 245.2
Remove/install transmission TRANSMISSION 711.6 in MODEL 169.0 /3, 245.2 with ENGINE 266.980
Raising / lowering the engine ENGINE 266.920 /940 /960 /980 in MODEL 169.0 /3, 245.2
Removing/installing the exhaust flex pipe ENGINE 266.980 in MODELS 169.0 /3, 245.2
Notes on the application of sealing compound of the camshaft case Engine 254.9 Engine 256.9 Engine 266.980 in model 169.0/3, 245.2