Note: The parameters used when performing the procedures described in this Chapter are listed below. Detailed standard information can be obtained from authorized Mercedes-Benz service stations. Individual characteristics are also listed in the text of the Chapter and, if mandatory, are highlighted in bold.
| General parameters | |
| Designation, engine type | |
| Petrol models | |
| ML 230 (163.136) | 111.977, in-line, 4-cylinder, DOHC, water-cooled, timing chain drive and microprocessor control |
| ML 320 (163.154) | 112.942, V-shaped, 6-cylinder, DOHC, with water cooling, timing chain drive and microprocessor control |
| ML 350 (163.157) | 112.970, V-shaped, 6-cylinder, DOHC, with water cooling, timing chain drive and microprocessor control |
| ML 430 (163.172) | 113.942, V-shaped, 8-cylinder, DOHC, with water cooling, timing chain drive and microprocessor control |
| ML 55 AMG (163.174) | 113.981, V-shaped, 8-cylinder, DOHC, with water cooling, timing chain drive and microprocessor control |
| ML 500 (163.175) | 113.965, V-shaped, 8-cylinder, DOHC, with water cooling, timing chain drive and microprocessor control |
| Diesel models | |
| ML 270 CDI (163.113) | 612.963, in-line, 5-cylinder, DOHC, water-cooled, timing chain drive and turbocharger |
| ML 400 CDI (163.128) | 628.963, V-shaped, 8-cylinder, DOHC, with water cooling, timing chain drive and turbocharger |
| Cylinder capacity | See Specifications for Chapter Controls and safe operating techniques |
| Nominal developed power | See Specifications for Chapter Controls and safe operating techniques |
| Nominal torque | See Specifications for Chapter Controls and safe operating techniques |
| Maximum crankshaft speed | See Specifications for Chapter Controls and safe operating techniques |
| Compression ratio | |
| Series 111 engines | 9.0 |
| Series 112 engines | 10.0 |
| Series 113 engines | No information available |
| 612 series engines | No information available |
| 628 series engines | No information available |
| Compression pressure, bar | |
| Series 111 engines | |
| 11÷15 |
| 1.5 |
| Engines of the 112 and 113 series | |
| 12÷14 |
| 9.0 |
| 1.5 |
| Engines of the 612 and 628 series | |
| 29÷35 |
| 18 |
| 3.0 |
| Cylinder firing order | |
| 4-cylinder engines | 1-3-4-2 |
| 5-cylinder engines | 1-2-4-5-3 |
| 6-cylinder engines | 1-5-3-6-2-4 |
| 8-cylinder engines | 1-5-4-8-6-3-7-2 |
| Cylinder diameter | |
| Series 111 engines | No information available |
| Engine 112.942 | 92.0 |
| Engine 112.970 | No information available |
| Engine 113.942 | 89.90 |
| Engine 113.981 | 97.00 |
| Engine 113.965 | No information available |
| 612 series engines | No information available |
| 628 series engines | No information available |
| Drive belt, mm | |
Series 111 engines | |
| 2040 |
| 2055 |
| 2140 |
| 2155 |
| Series 112 engines | No information available |
| Series 113 engines | No information available |
| Engines of the 612 series (+K/V, +GUR VDA) | 2271 |
| 628 series engines | No information available |
| Valve clearances | Not adjustable, because hydraulic compensators are used |
| Gas distribution mechanism | |
| Camshaft Code Designations | |
Engine 111.977 (ML 230) | |
| 18 |
| 17 |
| Engine 112.942 (ML 320) | No information available |
| Engine 112.970 (ML 350) | No information available |
| Engine 113.942 (ML 430) | No information available |
| Engine 113.981 (ML 55 AMG) | No information available |
| Engine 113.965 (ML 500) | No information available |
| Engine 612.963 (ML 270 CDI) | |
| 01 |
| 00 |
| Engine 628.963 (ML 400 CDI) | |
Left cylinder head | |
| 02 |
| 03 |
| Right cylinder head | |
| 00 |
| 01 |
| Valve timing (2mm opening when the chain is broken in) | |
| Engine 111.977 (ML 230) | |
Intake valves | |
| 20.0° after TDC |
| 29.5° after BDC |
| Exhaust valves | |
| 19.5° before BDC |
| 14.0° before TDC |
| Engine 112.942 (ML 320) | |
| Left cylinder head | |
| Intake valves | |
| 24.9° after TDC |
| 25.9° after BDC |
| Exhaust valves | |
| 31.5° before BDC |
| 12.1° before TDC |
| Right cylinder head | |
| Intake valves | |
| 26.5° after TDC |
| 27.5° after BDC |
| Exhaust valves | |
| 29.9° before BDC |
| 10.5° before TDC |
| Engine 112.970 (ML 350) | No information available |
| Engine 113.942 (ML 430) | |
| Left cylinder head | |
Intake valves | |
| 31.9° after TDC |
| 28.2° after BDC |
| Exhaust valves | |
| 24.1° before BDC |
| 9.1° before TDC |
| Right cylinder head | |
Intake valves | |
| 33.5° after TDC |
| 29.8° after BDC |
| Exhaust valves | |
| 22.5° before BDC |
| 7.5° before TDC |
| Engine 113.981 (ML 55 AMG) | |
| Left and right cylinder heads | |
Intake valves | |
| 25° after TDC |
| 39° after BDC |
| Exhaust valves | |
| 35° before BDC |
| 15° before TDC |
| Engine 113.965 (ML 500) | |
| Left cylinder head | |
Intake valves | |
| 30.9° after TDC |
| 25.7° after BDC |
| Exhaust valves | |
| 23.2° before BDC |
| 9.1° before TDC |
| Right cylinder head | |
Intake valves | |
| 32.5° after TDC |
| 27.3° after BDC |
| Exhaust valves | |
| 21.6° before BDC |
| 7.5° before TDC |
| Engine 612.963 (ML 270 CDI) | |
| Intake valves | |
| 19° after TDC |
| 7° after BDC |
| Exhaust valves | |
| 9° before BDC |
| 22° before TDC |
| Engine 628.963 (ML 400 CDI) | No information available |
| Additional parameters for engines 111.977 (ML 230) | |
| Maximum permissible radial clearance of the torsional vibration damper, mm | 0.6 |
| Maximum permissible axial play of the torsional vibration damper, mm | 0.6 |
| Diameter of camshaft bearings, mm | |
| Nominal value | 28.00÷28.02 |
| Repair value | 28.50÷28.52 |
| Diameter of bearing journals of camshafts, mm | |
| Nominal value | 27.95÷27.96 |
| Repair value | 28.45÷28.46 |
| Axial clearance of camshafts, mm | 0.05÷0.15 |
Tightening force of threaded connections, Nm
Note: The parameters used when performing the procedures described in this Chapter are listed below. Detailed standard information can be obtained from authorized Mercedes-Benz service stations. Individual characteristics are also listed in the text of the Chapter and, if mandatory, are highlighted in bold.
| M111 | |
| Nut securing tension roller to accessory drive belt tensioner assembly | 25 |
| Bolts for fastening the damper of the auxiliary drive belt tensioner | 25 |
| Tensioner mounting bolts | 25 |
| Bolt securing the steering pump to the timing belt cover | 20 |
| Transmission to engine mounting bolts | |
| M10x40 | |
| With yellow galvanic coating 55 | |
| With synthetic coating Dacromet/chrome plated 40 | |
| M10x90 | |
| With yellow galvanic coating | 45 |
| With synthetic coating Dacromet/chrome plated | 40 |
| Front Cylinder Head Cover Fastening Bolts | |
| M6 | 10 |
| M8 | 25 |
| Timing Belt Cover Fastening Bolts | |
| To the engine block (M8) | 25 |
| To the cylinder head | |
| 18 |
| Pull 90° |
| Bolts for fastening camshaft sprockets to flanges | |
| 20 |
| Pull to 60° |
| Nuts for fastening camshaft sprockets to flanges | 65 |
| Chain guide mounting bolts on cylinder head | 10 |
| Chain tensioner plug | 40 |
| Chain tensioner in the timing belt cover | 80 |
| Central bolt securing the regulator to the camshaft | |
| 5 |
| Pull 90° |
| Camshaft bearing cap mounting bolts | 21 |
| Cylinder head mounting bolts | |
| M12 | |
| 55 |
| Pull to a 90° angle |
| Pull to a 90° angle |
| To the timing belt cover | |
| 18 |
| Pull 90° |
| Bolts and nuts for fastening the intake manifold to the cylinder head | 20 |
| Engine rear end cover mounting bolts | 10 |
| Central bolt for mounting the vibration damper (strength class 10.9) | 300 |
| Flywheel/drive plate to crankshaft mounting bolts | |
| Stage 1 | 40/45 |
| Stage 2 | Pull 90° |
| Front suspension mount mounting nuts for powertrain | |
| To the car frame | 35 |
| To the support bracket | 65 |
| Bolts/nuts for fastening the rear support cushion of the powertrain suspension | |
| To the transmission housing | 35 |
| To the cross beam | 35 |
| Nuts for fastening the cross beam to the car frame | 35 |
| Oil pan mounting bolts | |
| To the cylinder block | |
| 10 |
| 25 |
| - |
| To the transmission dome | 40 |
| Oil pump mounting bolts | |
| Hexagonal | 25 |
| TORX | 18 |
| M112/113 | |
| Self-tapping bolt for fastening the tensioner to the timing belt cover | |
| 35 |
| 25 |
| Bolts for fastening the damper of the auxiliary drive belt tensioner | |
| To the tensioner | 25 |
| To the water pump | 35 |
| Tensioner mounting bolts | 25 |
| The union junction of the fuel supply line to the fuel line | 38 |
| Flange connection of the exhaust system inlet pipe with the exhaust manifold | 20 |
| Starter to engine crankcase mounting bolts | 42 |
| Bolts for fastening the front support cushions to the subframe | 35 |
| Bolts M8 for fastening the torque converter to the drive disk | 42 |
| Bolts for fastening the AT to the engine | |
| M10x40 and M10x90 | 40 |
| M12 | - |
| Hydraulic line fastening units to the steering pump | |
Pressure line | |
| - |
| 45 |
| Return line | 2 |
| Screws for fastening the K/V compressor to the support bracket | 20 |
| Bolts securing the timing cover to the block and cylinder head | 20 |
| Bolt M8x78 for fastening the guide pulley of the K/V and auxiliary drive belt to the timing belt cover | 68 |
| Water pump mounting bolts | |
| Self-tapping | |
M6 | |
| 14 |
| 10 |
| M8 | |
| 35 |
| 25 |
| Standard (M7) | 10 |
| Fastening the water pump drive pulley | 10 |
| Thermostat housing mounting bolts (M6) | 10 |
| Steering pump mounting bolts | |
Self-tapping | |
| 35 |
| 20 |
| Standard | 25 |
| Bolts for fastening the intake manifold to the cylinder heads (M8) | 20 |
| Chain tensioner in the timing belt cover | 80 |
| Bolt for fastening camshaft sprockets | |
(M12x45) | |
| 50 |
| Pull to a 90° angle |
| Hall sensor of the camshaft in the cylinder head | 8 |
| Bolts for fastening camshaft bearing bridges to cylinder heads | |
M7x45 | |
| 15 |
| - |
| M7x84 | |
| 10 |
| Pull to a 90° angle |
| Camshaft Sprocket Fastening Bolts | |
(M12x45) | |
| Stage 1 | 50 |
| Stage 2 | Pull to a 90° angle |
| Cylinder head mounting bolts | |
To the engine block (internal TORX) | |
| 10 |
| 30 |
| Pull to a 90° angle |
| Pull to a 90° angle |
| To the timing belt cover | 20 |
| Cylinder head cover fastening bolts | 10 |
| Nut for fastening the connecting pipe to the EGR valve | 40 |
| Flange connection of the exhaust system inlet pipe with the exhaust manifold | 20 |
| Exhaust manifold mounting nuts | 16 |
| Wheel bolts | 150 |
| Engine end cover mounting bolts | 10 |
| Central bolt for mounting the vibration damper | |
| Stage 1 | 200 |
| Stage 2 | Pull to an angle of 95° |
| Bolts securing the drive disc to the crankshaft | |
| Stage 1 | 45 |
| Stage 2 | Pull to a 90° angle |
| Bolts/nuts for fastening the rear support cushion of the powertrain suspension | |
| To the transmission housing | 35 |
| To the cross beam | 35 |
| Nuts for fastening the cross beam to the car frame | 35 |
| Bolts for fastening the left and right side supports of the power unit suspension to the engine crankcase | |
| Stage 1 | 20 |
| Stage 2 | Pull to a 90° angle |
| Front suspension mount mounting bolts for powertrain | |
| To the subframe | 35 |
| To the support bracket | 65 |
| Oil filter housing cover | 25 |
| Oil filter assembly housing mounting bolts | 70 |
| Fastening of liquid heat exchanger of oil filter | 11 |
| Oil pan drain plug (M14) | 30 |
| Self-tapping bolts for fastening the lower section of the oil pan to the upper | |
| The thread is not cut | 14 |
| The thread is cut | 10 |
| Bolts securing the upper section of the oil pan to the cylinder block | |
| M6 | 9 |
| M8 | 20 |
| Oil level sensor mounting bolts to the upper section of the oil pan | 10 |
| Oil spray mounting bolts | 15 |
| Oil pump mounting bolts (M8x30) | 20 |
| M612 | |
| 10 |
| 10 |
| 20 |
| Steering pump pressure line mounting assemblies | |
| M14x1.5 | - |
| M16x1.5 | 45 |
| Hollow bolt of the union connection of the oil drain line to the radiator | 30 |
| Bolts for fastening the K/V compressor to the timing belt cover | 20 |
| Engine mounting bolts AT | |
| M10x40 and M10x90 | 40 |
| M12 | - |
| Front Cylinder Head Cover Fastening Bolts | 14 |
| Bolts for fastening the cylinder head to the timing cover (M8) | 20 |
| Bolts securing the timing belt cover to the engine crankcase | |
| M6 | - |
| M8 | 20 |
| Oil pan mounting bolts | |
To the engine block | |
| 9 |
| 20 |
| - |
| To the timing belt cover (M6) | 9 |
| Side bolts | 9 |
| Oil pan drain plug (M14) | 30 |
| Central bolt of the torsional vibration damper | |
| Strength class 8.8 | |
| 200 |
| Pull to a 90° angle |
| Strength class 10.9 | |
| 325 |
| Pull to a 90° angle |
| Bolts for fastening the K/V compressor to the timing belt cover | 20 |
| Bolts for fastening camshaft bearing caps to cylinder head | 9 |
| Exhaust camshaft sprocket mounting bolt | 18 |
| Fuel injection pump intermediate sprocket mounting bolt | 40 |
| Timing chain tensioner mounting bolt to timing drive cover | 80 |
| Cylinder head mounting bolts | |
| To the timing belt cover (M8) | 20 |
| To the engine block (M12) | |
| 60 |
| Pull to a 90° angle |
| Pull to a 90° angle |
| Fuel injection pump pressure line nut/fuel distribution line | 20 |
| Front catalytic converter to turbocharger connection unit | 30 |
| Turbocharger Oil Drain Line Mounting Bolt | 9 |
| Turbocharger support bracket mounting bolts | 30 |
| Bolts of the air boost distribution sleeve | |
| - |
| 16 |
| Air duct clamps | 3 |
| Bolt for fastening the support bracket to the air boost tract distribution sleeve | 20 |
| Bolt securing support bracket to engine mounting bracket | 40 |
| Bolts for fastening the electric motor for shutting off the intake port to the air distribution sleeve of the boost tract | 9 |
| Exhaust manifold mounting nuts on cylinder head | 30 |
| Engine rear end cover mounting bolts | 9 |
| Flywheel/drive plate to crankshaft mounting bolts | |
| 45 |
| Pull to a 90° angle |
| Oil filter housing cover | 25 |
| Fastening of liquid heat exchanger of oil filter | 15 |
| Oil pan mounting bolts | |
To the engine block | |
| 9 |
| 20 |
| - |
| To the transmission housing | 40 |
| To the timing belt cover (M6) | 9 |
| Oil level sensor mounting bolts to oil pan | 14 |
| Oil pump mounting bolts | 18 |
| M628 | |
| Ancillary drive belt tensioner in the engine crankcase | 30 |
| Front catalytic converter to turbocharger connection unit | 15 |
| Torque converter to drive disc mounting bolts (M8) | 42 |
| ATF Cooling Line Union Nuts/Hollow Bolts | 35 |
| Steering pump pressure line mounting assemblies | |
| M14x1.5 | - |
| M16x1.5 | 45 |
| Hollow bolt of the union connection of the oil drain line to the radiator | 30 |
| Bolt for fastening the refrigeration line to the compressor K/V | 20 |
| Engine mounting bolts AT | |
| M10x40 and M10x90 | 40 |
| M12 | - |
| Front Cylinder Head Cover Fastening Bolts | 14 |
| Pins for riveted timing chain links (approximate value) | 28 |
| Bolts for fastening camshaft bearing caps to cylinder head | 9 |
| Exhaust camshaft sprocket mounting bolt | 18 |
| Fuel injection pump intermediate sprocket mounting bolt | 40 |
| Timing chain tensioner mounting bolt to timing drive cover | 80 |
| Bolts securing the centrifuge cover to the engine crankcase | 8 |
| Cylinder head bolts | |
| To the timing belt cover (M8) | 20 |
| To the engine block | |
| Stage 1 | 20 |
| Stage 2 | 60 |
| Stage 3 | Pull to a 90° angle |
| Stage 4 | Pull to a 90° angle |
| Stage 5 | Pull to a 90° angle |
| Bolt securing oil return line to turbocharger | 9 |
| Turbocharger support bracket mounting bolts | 30 |
| Exhaust manifold mounting nuts on cylinder head | 30 |
| Engine rear end cover mounting bolts | 9 |
| Oil pan drain plug (M14) | 32 |
| Oil pan mounting bolts | |
| To the engine block | |
| M6 | 19 |
| M8 | 20 |
| M10 | - |
| To the transmission housing | 40 |
| To the timing belt cover (M6) | 9 |
| Central bolt of the torsional vibration damper | |
| Stage 1 | 275 |
| Stage 2 | Pull to a 90° angle |
| Bolts securing the drive disc to the crankshaft | |
| Stage 1 | 45 |
| Stage 2 | Pull to a 90° angle |
| Oil filter housing cover | 25 |
| Fastening of liquid heat exchanger of oil filter | 15 |
| Fastening the ventilation line to the left intake manifold | 11 |
| Self-tapping bolts for fastening the lower section of the oil pan to the upper | |
| The thread is not cut | 12 |
| The thread is cut | 8 |
| Bolts for fastening the upper section of the oil pan to the engine block (M6) | 8 |
| Oil pump mounting bolts (TORX) | 8 |
| Screws for fastening the cover with oil pipe to the oil pump assembly | 10 |