Service manual Mercedes-Benz M275 Engine | Up to 2020 incl.

Inspect cooling system for leaks 04.04.2019 Engine Engine Engine Engine 111, 120, 137, 285.950/980, 601, 602, 603, 604, 605, 606, 611, 612, 613, 628, 646.951/961, 647.961, 648.960/961 112 (except 112.912/916/946/947/953/955/960/961) 112.945, 113.962, 606.964, 612.965/966, 628.962 113 (except 113.963/968/987/988/990/991/992/995) Engine 271.941 Engine 275 (except 275.953/982) Engine 603.931 Engine 603.972
Actuate circulation pump ENGINE 275 in MODEL 230
Actuate circulation pump ENGINE 275.950 in MODEL 215.376, 220.176 /876 ENGINE 275.980 in MODEL 215.379, 220.179
Adjusting parking brake MODEL 215.379, 220.179 with ENGINE 275.980
Assign crankshaft bearing shells Engine 137.970, 275, 277
Assigning a standard dimension piston to a cylinder bore ENGINE 137.970, 275
Attach engine supporting frame and lifting engine MODEL 220 with ENGINE 112, 113, 137, 275, 613, 648 MODEL 215 with ENGINE 113, 137, 275 MODEL 230 with ENGINE 112, 113, 156, 272, 273, 275
Bolt plan for coolant pump Engine 137.970, 275.950/951/953/954/980/981/982/983, 277, 279, 285
Bolt plan for timing case cover ENGINE 137.970, 275 Bei anmontierter Kühlmittelpumpe’
Bolt plan for timing case cover Engine 137.970, 275, 277, 279 For a removed coolant pump
Carrying out the bleeding process for the low temperature circuit ENGINE 275, 279, 285
Check and correct power steering fluid level MODEL 216 with ENGINE 156, 157, 273, 275, 278 MODEL 221 with ENGINE 156, 157, 272, 273, 275, 276, 278, 629, 642, 651
Check basic position of camshafts ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Check charge air cooler ENGINE 275 in MODEL 215, 216, 220, 221, 230 Innere Dichtheit über den Luftaustrittsstutzen prüfen ENGINE 285 in MODEL 240 Innere Dichtheit über den Luftaustrittsstutzen prüfen’
Check charge air cooler ENGINE 275 in MODEL 215, 216, 220, 221, 230 Innere Dichtheit über den Lufteintrittsstutzen prüfen ENGINE 285 in MODEL 240 Innere Dichtheit über den Lufteintrittsstutzen prüfen’
Check connecting rod bolts Engine 137.970, 275, 277
Check cylinder head bolts Engine 275, 277, 279, 285
Check engine oil level with special tool Engine 275
Check main circuit coolant level ENGINE 112, 113, 156, 272, 273 in MODEL 230 ENGINE 275 in MODEL 230 Main circuit
Check visible area of poly-V belt for wear ENGINE 275 in MODEL 216, 221
Check visible area of poly-V belt for wear ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.980 in MODEL 215.379, 220.179 ENGINE 275.951 in MODEL 230.476 ENGINE 275.981 in MODEL 230.479 ENGINE 275.954 in …
Checking charging current of alternator ENGINE 113.960 /986, 137.970, 275 in MODEL 215 ENGINE 112.922 /944 /975, 113.941 /948 /960 /966 /986, 137.970, 275 in MODEL 220
Connect compression recorder ENGINE 157, 272, 273, 275, 276, 278, 629, 642 (except , 272.974) in MODEL 221 ENGINE 157, 273, 275, 278 in MODEL 216 ENGINE 642 in MODEL 212 ENGINE 642, 651 in MODEL 218
Connect compression tester ENGINE 112, 113, 156, 272, 273, 275 in MODEL 230
Connect compression tester ENGINE 113 in MODEL 215, 220 ENGINE 137 in MODEL 215, 220 ENGINE 275 in MODEL 215, 220 ENGINE 628 in MODEL 220 ENGINE 112 in MODEL 220
Connection diagram of evaporative emission control system MODEL 215 with ENGINE 137, 275 MODEL 220 with ENGINE 137, 275 MODEL 230 with ENGINE 156, 275 MODEL 197 with ENGINE 159
Cranking the engine ENGINE 628.960 in MODELS 220.028 /128 Crank engine at the torque converter ENGINE 628.961 in MODEL 211.028 Crank engine at the torque converter ENGINE 275.950 in MODEL …
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, …
Disconnect brake cables MODEL 215.379, 220.179 with ENGINE 275.980
Disconnect connect engine wiring harness at vehicle side ENGINE 275 in MODEL 215, 220
Disconnect/connect fuel line connector ENGINE 272.973 in MODEL 164.195 with CODE (917) Gas-tight fuel tank ENGINE 272.964 in MODEL 211.056 with CODE (917) Gas-tight fuel tank ENGINE 156, 157, 273, 275, 278 in …
Double hexagon wrench to remove pulley MODEL 220 with ENGINE 112, 113, 137 MODEL 163 with ENGINE 111.977, 112, 113, 612 MODEL 215 with ENGINE 113, 137 MODEL 230 with ENGINE 112, 113, 275 MODEL 164.175 with …
Drain/pour in coolant ENGINE 275 in MODEL 215, 216, 220, 221, 230 Main circuit ENGINE 285 in MODEL 240 Main circuit
Empty/fill fuel tank MODEL 230 with ENGINE 275 with CODE (P99) “AMG Black Series” special model
Engine cooling system – check fluid level adjust to correct level. Inspect anticorrosion/antifreeze protection adjust to correct … Engine 275.950 in model 215.376, 220.176 Engine 275.951 in model 230.476 Engine 275.954 in model 230.477 Engine 275.980 in model 215.379, 220.179 Engine 275.981 in model 230.479 …
Engine oil and oil filter change Engine 275.950 in model 215, 220 Engine 275.953 in model 216, 221
Engine oil and oil filter change Engine 275.980 in model 215, 220 Engine 275.982 in model 216, 221
Engine oil and oil filter change Engine 275.981/983 in model 230
Ensure cylinder head cover gasket is correctly installed. ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Firing order Engine 111, 112, 113, 137, 271, 272, 273, 275, 277, 279, 285, 601, 602, 603, 604, 605, 606, 611 Engine 112, 113, 273, 602, 606 in model 463 Engine 271.951, 272.979 in model 906 Engine …
General information on inspecting cylinder walls Engine 112, 113, 137, 152, 155, 157, 166, 272, 273, 275, 277, 279, 285
Information on application of sealant to crankcase bottom section Engine 137.970, 156, 159, 275, 277, 281, 285, 628, 629
Information on application of sealant to end cover of crankcase Engine 137.970, 275, 279 Engine 629 At front of engine Engine 651 in model 447 Engine 651 in model 636 Engine 651 in model 639 Engine 651 in model 900 Engine 651 in model 907, 910 …
Inspect cooling system for leaks ENGINE 275 in MODEL 215, 216, 220, 221, 230 Low-temperature circuit ENGINE 285 in MODEL 240 Low temperature circuit
Inspect cylinders for leaks ENGINE 275
Inspect cylinders with a light probe Engine 112.945, 113.962/982 in model 463 Engine 112 Engine 113 in model 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230 Engine 137 in model 215, 220 Engine 275 in model 215, …
Inspecting belt pulley / vibration damper for axial and radial runout ENGINE 112, 113, 137, 275, 285, 112.945, 113.962 /982
Install and gauge connecting rod bearings Engine 137.970, 275, 277
Install front crankshaft radial seal ENGINE 111.951 ENGINE 111.955 ENGINE 112 ENGINE 113 ENGINE 137 ENGINE 112.945 ENGINE 113.962 ENGINE 113.982 ENGINE 113.993 ENGINE 275 ENGINE 272 ENGINE 273 …
Installing chain tensioner ENGINE 272, 275 M24×1,5′
Loosening and tightening regulation for camshaft bearing caps Engine 275, 277, 279, 285
Measure crankshaft and remount in bearings Engine 137.970, 275.950/951/953/954/980/981/982/983, 277.980
Measure piston ring end gap ENGINE 137.970, 275
Measure vertical clearance of piston rings ENGINE 137.970, 275
Mount crankshaft axially Engine 137.970, 275, 277
Mount crankshaft radially in bearings Engine 137 Engine 275 Engine 277
Notes on avoiding damage to ignition system ENGINE 137, 275, 279, 285
Notes on sealant path for front cover to cylinder head xxx Engine 275, 277, 279, 285
Notes on sealant path for oil pan Engine 112 (except 112.912/946) Engine 113.941/942/960/962/965/981/982/993 Engine 137.970, 275, 277, 279 Engine 176 in model 463 as of model year 2019 Engine 176 in model 463 up to …
Notes on sealant path for timing case cover Engine 275, 277, 279
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, …
Oil pan and overflow tube modified TRANSMISSION 722.9 as of 21.6.10 with ENGINE 113, 156, 157, 271, 272, 273, 275, 276, 278, 642, 651
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
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, …
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
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
Perform adjustments to the control system MODEL 216, 221 with ENGINE 275 Motorölstand prüfen’
Pour in coolant and bleed cooling system Engine 133, 139, 152, 155, 156, 157, 159, 176, 177, 178, 260, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 282 Engine 157, 176, 177, 279, 642 Engine 607, 608, 628, 629, 642, 651
Prepare the low temperature circuit for the bleeding process ENGINE 275, 279, 285
Prerequisites for testing Alternator ENGINE 113.960 /986, 137.970, 275 in MODEL 215 ENGINE 112.922 /944 /975, 113.941 /948 /960 /966 /986, 137.970, 275 in MODEL 220
Raise engine ENGINE 112, 113, 137, 275, 648 in MODEL 220 ENGINE 113, 137, 275 in MODEL 215
Reduce fuel pressure through service valve ENGINE 113 in MODEL 211, 219 ENGINE 272 in MODEL 171, 203, 204, 207, 209, 211, 212, 219, 221, 230 ENGINE 273 in MODEL 207, 209, 212, 216, 221, 230 ENGINE 152.9, 157, 275, …
References to test conditions for engine testing and adjusting work ENGINE 104, 111, 112, 113, 119, 120, 137, 166, 266, 271, 272, 275, 285, 601, 602, 603, 604, 605, 606, 611, 612, 613, 628, 629, 640, 642, 646, 647, 648, 668
Remove and install alternator ENGINE 275 in MODEL 215, 220
Remove install coolant thermostat housing ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove install engine oil cooler ENGINE 275.982 in MODEL 216.379, 221.179
Remove/ install activated charcoal canister MODEL 230 with ENGINE 275 with CODE (P99) “AMG Black Series” special model
Remove/install additional radiator ENGINE 275.982 in MODEL 221.179, 216.379
Remove/install air filter housing ENGINE 275 in MODEL 230 with CODE (P99) “AMG Black Series” special model
Remove/install air pump ENGINE 137.970 in MODEL 215.378, 220.178 ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.980 in MODEL 215.379, 220.179
Remove/install air pump ENGINE 275 in MODEL 216, 221
Remove/install air pump ENGINE 275 in MODEL 230
Remove/install air pump switchover valve ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove/install air shutoff valve ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove/install alternator ENGINE 275 (except 275.982) in MODEL 216, 221
Remove/install alternator ENGINE 275 in MODEL 230 with CODE (P99) “AMG Black Series” special model
Remove/install alternator ENGINE 275.982 in MODEL 216.379, 221.179
Remove/install brake booster vacuum line MODEL 216.### 1# with ENGINE 156, 273, 275 MODEL 221.### 1# with ENGINE 156, 272, 273, 275, 642, 629 (except , 272.974)
Remove/install camshafts ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove/install catalytic converter ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.980 in MODEL 215.379, 220.179
Remove/install center cooling duct ENGINE 275 in MODEL 230 with CODE (P99) “AMG Black Series” special model
Remove/install chain tensioner ENGINE 275 in MODEL 215, 220 ENGINE 285 in MODEL 240
Remove/install chain tensioner ENGINE 275 in MODEL 216, 221
Remove/install chain tensioner ENGINE 275 in MODEL 230
Remove/install charge air cooler ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove/install components for belt drive ENGINE 275 in MODEL 216, 221
Remove/install crankshaft Engine 275 in model 215, 216, 220, 221
Remove/install crankshaft Engine 275 in model 230
Remove/install cylinder head Engine 275 in model 215, 216, 220, 221, 230 Engine 285 in model 240
Remove/install deceleration air valve ENGINE 275 in MODEL 216, 221
Remove/install divert air switchover valve ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove/install ECI ignition system power pack Engine 275 in model 215, 216, 220, 221, 230 Engine 285 in model 240
Remove/install end cover Engine 275 in model 215, 216, 220, 221, 230
Remove/install engine cover ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.951 in MODEL 230.476 ENGINE 275.953 in MODEL 216.376, 221.176 ENGINE 275.954 in MODEL 230.477 ENGINE 285 in …
Remove/install engine from/onto front axle carrier ENGINE 272, 273, 275 in MODEL 230
Remove/install engine with front axle carrier ENGINE 275 in MODEL 230 except CODE (P99) Special model “AMG Black Series”
Remove/install engine with front axle carrier ENGINE 275 in MODEL 230 with CODE (P99) “AMG Black Series” special model
Remove/install exhaust system complete ENGINE 275.951 in MODEL 230.476 ENGINE 275.954 in MODEL 230.477 ENGINE 275.981 /983 in MODEL 230.479
Remove/install expansion reservoir 20.7.09 MODEL 221 with ENGINE 272, 273, 275 except CODE (487) Active Body Control (ABC) ohne elektrohydraulische Servolenkung (EHPS) MODEL 216 with ENGINE 273 except CODE (487) Active Body Control (ABC) ohne elektrohydraulische Servolenkung (EHPS)
Remove/install expansion reservoir Engine 156, 157, 272, 273, 275, 276, 278 in model 221 Engine 156, 157, 273, 275, 278 in model 216
Remove/install fan shroud ENGINE 137 in MODEL 215, 220 ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.951 in MODEL 230.476 ENGINE 275.981 in MODEL 230.479 ENGINE 275.954 in MODEL 230.477
Remove/install fan shroud ENGINE 275 (except 275.982) in MODEL 216, 221
Remove/install fan shroud ENGINE 275.980 in MODEL 215.379, 220.179
Remove/install fan shroud ENGINE 275.982 in MODEL 216.379, 221.179
Remove/install fan unit ENGINE 275 in MODEL 230 with CODE (P99) “AMG Black Series” special model
Remove/install flywheel / drive plate ENGINE 275 in MODEL 215, 216, 220, 221
Remove/install flywheel / drive plate ENGINE 275 in MODEL 230
Remove/install front cap on cylinder head Engine 275 in model 215, 216, 220, 221, 230 Left cover Engine 285 in model 240 Left cover
Remove/install front cap on cylinder head Engine 275 in model 215, 216, 220, 221, 230 Right cover Engine 285 in model 240 Right cover
Remove/install front end crossmember MODEL 216.379, 221.179 with ENGINE 275.982
Remove/install fuel distributor with injection valves (ME-SFI) Engine 275 in model 215, 216, 220, 221, 230 Engine 285 in model 240
Remove/install fuel pump control unit ENGINE 285 in MODEL 240 ENGINE 275.950 in MODELS 215.376, 220.176 ENGINE 275.980 in MODELS 215.379, 220.179
Remove/install fuel pump ENGINE 113.991 in MODEL 215.374, 220.074 /174 Intank fuel pump ENGINE 275.980 in MODEL 215.379, 220.179 Intank fuel pump
Remove/install ignition coil module Engine 275 in model 215, 216, 220, 221, 230
Remove/install injection system control unit ENGINE 275 in MODEL 216, 221
Remove/install injectors (ME-SFI) ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Remove/install low temperature water circuit radiator ENGINE 275 (except 275.982) in MODEL 216, 221
Remove/install low temperature water circuit radiator ENGINE 275 in MODEL 230 with CODE (P99) “AMG Black Series” special model
Remove/install low temperature water circuit radiator ENGINE 275 in MODEL 230.476 /477 ENGINE 275 in MODEL 230.479 up to Model Year 2007
Remove/install low temperature water circuit radiator ENGINE 275.982 in MODEL 216.379, 221.179
Remove/install oil pan ENGINE 137.970 in MODEL 215.378, 220.178 /878 ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.980 in MODEL 215.379, 220.179
Remove/install oil pan ENGINE 275 in MODEL 230
Remove/install oil pump ENGINE 137 in MODEL 215, 220 ENGINE 275 in MODEL 215, 216, 220, 221
Remove/install oil pump ENGINE 275 in MODEL 230
Remove/install poly V-belt tensioning device ENGINE 137.970 in MODEL 215.378, 220.178 /878 ENGINE 275.950 in MODEL 215.376, 220.176 ENGINE 275.980 in MODEL 215.379, 220.179
Remove/install poly-V belt ENGINE 137 in MODEL 215, 220 ENGINE 275 in MODEL 215, 220, 230
Remove/install poly-V belt tensioning device ENGINE 275 in MODEL 230
Remove/install power steering pump MODEL 230.476 with ENGINE 275.951 MODEL 230.477 with ENGINE 275.954 MODEL 230.479 with ENGINE 275.981
Remove/install pressure sensor throttle valve actuator Engine 275 in model 215, 216, 220, 221, 230 Engine 285 in model 240
Remove/install pressure sensor throttle valve actuator ENGINE 275 in MODEL 215, 216, 220, 221, 230 Pressure sensor upstream of throttle valve actuator ENGINE 285 in MODEL 240 Pressure sensor upstream of throttle valve actuator
Remove/install radiator ENGINE 113.963 in MODEL 230.475 ENGINE 113.992 in MODEL 230.474 ENGINE 112.973 in MODEL 230.467 ENGINE 275.951 in MODEL 230.476 ENGINE 113.995 in MODEL 230.472 …
Remove/install radiator Engine 275 in model 230 with code P99 (Special model “AMG Black Series”)
Remove/install radiator ENGINE 275.950 in MODEL 220.176 ENGINE 137.970 in MODEL 215.378, 220.178 /878
Remove/install radiator Engine 275.981 in model 230.479 except code P99 (Special model “AMG Black Series”)
Remove/install rear engine cross member ENGINE 275.950 in MODEL 220.176 ENGINE 628.960 in MODELS 220.028 /128 ENGINE 275.980 in MODEL 220.179
Remove/install rear engine mount ENGINE 112 (except 112.975) in MODEL 220 ENGINE 137 in MODEL 215, 220 ENGINE 613, 628 in MODEL 220 ENGINE 113.963 in MODEL 230.475 ENGINE 113.992 in MODEL 230.474 ENGINE 113.991 in MODEL 215.374 ENGINE 113.991 in MODEL 220.074 ENGINE 275 in MODEL 215, 220, 230 ENGINE 113 / (except 113.948 /966) in MODEL 215, 220 ENGINE 113.995 in MODEL 230.472
Remove/install retaining lock for crankshaft / ring gear ENGINE 275 in MODEL 216, 221
Remove/install starter ENGINE 275 in MODEL 216, 221
Removing/installing the electronic accelerator actuator with flap connection ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Replace fuel filter Engine 152, 271, 274, 276 in model 172 Engine 275.983 in model 230.479 with code P99 (Special model “AMG Black Series”)
Replace rear crankshaft radial seal ENGINE 275 in MODEL 215, 216, 220, 221
Replace rear crankshaft radial sealing ring ENGINE 275 in MODEL 230
Replace spark plugs Engine 137.970 in model 215.378, 220.178/878 Engine 275.950 in model 215.376, 220.176 Engine 275.951 in model 230.476 Engine 275.954 in model 230.477 Engine 275.980 in model …
Replace spark plugs Engine 275.953 in model 216.376, 221.176 Engine 275.982 in model 216.379, 221.179
Routing diagram of poly V-belt ENGINE 137, 275
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
Set basic position of camshafts ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Slackening diagram for cylinder head bolts Engine 275, 277, 279, 285
Suction off engine oil Engine 102, 103, 104, 110, 111, 112, 113, 115, 119, 120, 133, 137, 157, 166, 270, 271, 272, 273, 274, 275 (except 275.981/983), 276, 278, 279, 285, 601, 602, 603, 604, 605, 606, 611, 612, …
Test diodes of generator ENGINE 113, 137, 275 in MODEL 215 ENGINE 112, 113, 137, 275 in MODEL 220
Test the compression pressure ENGINE 137 in MODEL 215, 220 ENGINE 275 in MODEL 215, 216, 220, 221, 230 ENGINE 285 in MODEL 240
Tighten connecting rod bolts Engine 137.970, 275, 277
Tightening pattern for exhaust manifold Engine 275 in model 215, 216, 220, 221, 230 Engine 279 in model 231
Tightening procedure for crankcase bottom section Engine 137.970, 275, 277
Tightening specifications for cylinder head bolts Engine 275, 277, 279, 285
Venting air from the low temperature circuit ENGINE 275, 279, 285