Note. The following are the settings used when performing the procedures in this chapter. Detailed regulatory information can be obtained from authorized Mercedes-Benz workshops. Separate characteristics are also given in the text of the Chapter and, if they are mandatory, are highlighted in bold.
| Common 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-twin, 6-cylinder, DOHC, water-cooled, timing chain and microprocessor control |
| ML 350 (163.157) | 112.970, V-twin, 6-cylinder, DOHC, water-cooled, timing chain and microprocessor controlled |
| ML 430 (163.172) | 113.942, V-twin, 8-cylinder, DOHC, water-cooled, timing chain and microprocessor control |
| ML 55 AMG (163.174) | 113.981, V-twin, 8-cylinder, DOHC, water-cooled, timing chain and microprocessor control |
| ML 500 (163.175) | 113.965, V-twin, 8-cylinder, DOHC, water-cooled, timing chain and microprocessor control |
| Diesel models | |
| ML 270 CDI (163.113) | 612.963, in-line, 5-cylinder, DOHC, water-cooled, timing chain and turbocharger |
| ML 400 CDI (163.128) | 628.963, V-twin, 8-cylinder, DOHC, water-cooled, timing chain and turbocharger |
| Cylinder volume | See Specifications for Chapter Controls and techniques for safe operation |
| Rated developed power | See Specifications for Chapter Controls and techniques for safe operation |
| Rated torque | See Specifications for Chapter Controls and techniques for safe operation |
| Maximum crankshaft speed | See Specifications for Chapter Controls and techniques for safe operation |
| Compression ratio | |
| 111 series engines | 9.0 |
| 112 series engines | 10.0 |
| 113 series engines | No information |
| 612 series engines | No information |
| 628 series engines | No information |
| Compression pressure, bar | |
| 111 series engines | |
| 11 ÷ 15 |
| 1.5 |
| 112 and 113 series engines | |
| 12 ÷ 14 |
| 9.0 |
| 1.5 |
| 612 and 628 series engines | |
| 29 ÷ 35 |
| 18 |
| 3.0 |
| The order of operation of the cylinders | |
| 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 | |
| 111 series engines | No information |
| Engine 112.942 | 92.0 |
| Engine 112.970 | No information |
| Engine 113.942 | 89.90 |
| Engine 113.981 | 97.00 |
| Engine 113.965 | No information |
| 612 series engines | No information |
| 628 series engines | No information |
| Drive belt, mm | |
111 series engines | |
| 2040 |
| 2055 |
| 2140 |
| 2155 |
| 112 series engines | No information |
| 113 series engines | No information |
| 612 series engines (+K/V, +GUR VDA) | 2271 |
| 628 series engines | No information |
| valve clearances | Not regulated, because applied hydraulic compensators |
| Gas distribution mechanism | |
| Code designations of camshafts | |
Engine 111.977 (ML 230) | |
| 18 |
| 17 |
| Engine 112.942 (ML 320) | No information |
| Engine 112.970 (ML 350) | No information |
| Engine 113.942 (ML 430) | No information |
| Engine 113.981 (ML 55 AMG) | No information |
| Engine 113.965 (ML 500) | No information |
| 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 with run-in chain) | |
| 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 |
| 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 |
| Additional parameters for motors 111.977 (ML 230) | |
| Maximum allowable radial play of the torsional vibration damper, mm | 0.6 |
| Maximum permissible axial play of the torsional vibration damper, mm | 0.6 |
| Camshaft bearing diameter, mm | |
| Rated value | 28.00 ÷ 28.02 |
| Repair value | 28.50 ÷ 28.52 |
| Diameter of bearing necks of camshafts, mm | |
| Rated value | 27.95 ÷ 27.96 |
| Repair value | 28.45 ÷ 28.46 |
| Axial backlash of camshafts, mm | 0.05 ÷ 0.15 |
Tightening force of threaded connections, Nm
Note. The following are the settings used when performing the procedures in this chapter. Detailed regulatory information can be obtained from authorized Mercedes-Benz workshops. Separate characteristics are also given in the text of the Chapter and, if they are mandatory, are highlighted in bold.
| M111 | |
| Nut of fastening of a tension roller to assembly of a tensioner of a belt of a drive of auxiliary units | 25 |
| Bolts of fastening of a damper of a tensioner of a belt of a drive of auxiliary units | 25 |
| Tensioner mounting bolts | 25 |
| Bolt of fastening of the steering pump to the timing cover | 20 |
| Bolts of fastening of transmission to the engine | |
| M10x40 | |
| Yellow galvanized 55 | |
| Synthetic coated Dacromet/Chrome 40 | |
| М10x90 | |
| Yellow galvanized | 45 |
| Synthetic coated Dacromet/Chrome plated | 40 |
| Bolts of fastening of a forward cover of a head of cylinders | |
| M6 | 10 |
| M8 | 25 |
| Timing cover bolts | |
| To engine block (M8) | 25 |
| To cylinder head | |
| 18 |
| Reach 90° |
| Bolts of fastening of sprockets of camshafts to flanges | |
| 20 |
| Reach 60° |
| Nuts of fastening of sprockets of camshafts to flanges | 65 |
| Bolts of fastening of a directing chain on a head of cylinders | 10 |
| chain tensioner plug | 40 |
| Chain tensioner in the timing cover | 80 |
| The central bolt of fastening of a regulator to a camshaft | |
| 5 |
| Reach 90° |
| Bolts of fastening of covers of bearings of camshafts | 21 |
| Bolts of fastening of a head of cylinders | |
| M12 | |
| 55 |
| Pull up to 90° |
| Pull up to 90° |
| To timing cover | |
| 18 |
| Reach 90° |
| Bolts and nuts of fastening of the inlet pipeline to a head of cylinders | 20 |
| Bolts of fastening of a back face cover of the engine | 10 |
| Vibration damper center bolt (strength class 10.9) | 300 |
| Bolts of fastening of a flywheel/drive disk to a cranked shaft | |
| Stage 1 | 40/45 |
| Stage 2 | Reach 90° |
| Nuts of fastening of pillows of forward support of a suspension bracket of the power unit | |
| To the car frame | 35 |
| To support bracket | 65 |
| Bolts/nuts of fastening of a pillow of a back support of a suspension bracket of the power unit | |
| To transmission housing | 35 |
| To the cross beam | 35 |
| Nuts of fastening of a cross beam to a car frame | 35 |
| Bolts of fastening of the pallet crankcase | |
| To cylinder block | |
| 10 |
| 25 |
| - |
| To transmission dome | 40 |
| Oil pump mounting bolts | |
| Hexagonal | 25 |
| TORX | 18 |
| M112/113 | |
| Self-tapping bolt for fastening the tensioner to the timing cover | |
| 35 |
| 25 |
| Bolts of fastening of a damper of a tensioner of a belt of a drive of auxiliary units | |
| To tensioner | 25 |
| To water pump | 35 |
| Tensioner mounting bolts | 25 |
| Fitting unit for connecting the supply gas line to the fuel line | 38 |
| Flange connection of the exhaust pipe of the exhaust system with the exhaust manifold | 20 |
| Bolts of fastening of a starter to a crankcase of the engine | 42 |
| Bolts of fastening of pillows of forward support to a subframe | 35 |
| M8 bolts fastening the torque converter to the drive disk | 42 |
| Bolts of fastening АТ to the engine | |
| M10x40 and M10x90 | 40 |
| M12 | - |
| Attachments for hydraulic lines to steering pump | |
pressure line | |
| - |
| 45 |
| return line | 2 |
| Screws of fastening of the K/V compressor to a basic arm | 20 |
| Bolts for fastening the timing cover to the block and cylinder head | 20 |
| Bolt M8x78 fastening the guide pulley of the A / V drive belt and auxiliary units to the timing drive cover | 68 |
| Water pump mounting bolts | |
| Self-tapping | |
M6 | |
| 14 |
| 10 |
| M8 | |
| 35 |
| 25 |
| Standard (M7) | 10 |
| Fastening of a pulley of a drive of the water pump | 10 |
| Bolts of fastening of a casing of the thermostat (M6) | 10 |
| Steering pump mounting bolts | |
Self-tapping | |
| 35 |
| 20 |
| Standard | 25 |
| Bolts of fastening of the inlet pipeline to heads of cylinders (M8) | 20 |
| Chain tensioner in the timing cover | 80 |
| Bolt of fastening of sprockets of camshafts | |
(М12x45) | |
| 50 |
| Pull up to 90° |
| Hall sensor camshaft in the cylinder head | 8 |
| Bolts of fastening of bridges of bearings of camshafts to heads of cylinders | |
M7x45 | |
| 15 |
| - |
| M7x84 | |
| 10 |
| Pull up to 90° |
| Bolts of fastening of sprockets of camshafts | |
(М12x45) | |
| Stage 1 | 50 |
| Stage 2 | Pull up to 90° |
| Bolts of fastening of a head of cylinders | |
To engine block (internal TORX) | |
| 10 |
| 30 |
| Pull up to 90° |
| Pull up to 90° |
| To timing cover | 20 |
| Bolts of fastening of covers of heads of cylinders | 10 |
| Nut of fastening of a connecting tube to the EGR valve | 40 |
| Flange connection of the exhaust pipe of the exhaust system with the exhaust manifold | 20 |
| Nuts of fastening of a final collector | 16 |
| wheel bolts | 150 |
| Engine End Cover Bolts | 10 |
| Vibration damper center bolt | |
| Stage 1 | 200 |
| Stage 2 | Pull up to 95° |
| Bolts of fastening of a driving disk to a cranked shaft | |
| Stage 1 | 45 |
| Stage 2 | Pull up to 90° |
| Bolts/nuts of fastening of a pillow of a back support of a suspension bracket of the power unit | |
| To transmission housing | 35 |
| To the cross beam | 35 |
| Nuts of fastening of a cross beam to a car frame | 35 |
| Bolts for fastening the left and right side supports of the suspension of the power unit to the engine crankcase | |
| Stage 1 | 20 |
| Stage 2 | Pull up to 90° |
| Bolts of fastening of pillows of forward support of a suspension bracket of the power unit | |
| To subframe | 35 |
| To support bracket | 65 |
| Oil filter housing cover | 25 |
| Bolts of fastening of a casing of assembly of the oil filter | 70 |
| Fastening of the liquid heat exchanger of the oil filter | 11 |
| Oil pan drain plug (M14) | 30 |
| Self-tapping bolts securing the lower section of the oil pan to the upper | |
| Thread not cut | 14 |
| thread cut | 10 |
| Bolts of fastening of the top section of the pallet crankcase to the block of cylinders | |
| M6 | 9 |
| M8 | 20 |
| Bolts of fastening of the gauge of level of oil to the top section of the pallet of a crankcase | 10 |
| Bolts of fastening of oil atomizers | 15 |
| Oil pump mounting bolts (M8x30) | 20 |
| M612 | |
| 10 |
| 10 |
| 20 |
| Steering pump pressure line attachment points | |
| М14x1.5 | - |
| M16x1.5 | 45 |
| Hollow bolt of the union connection of the oil outlet line to the radiator | 30 |
| Bolts of fastening of the K/V compressor to a cover of the GRM drive | 20 |
| Bolts of fastening to the AT engine | |
| M10x40 and M10x90 | 40 |
| M12 | - |
| Bolts of fastening of a forward cover of a head of cylinders | 14 |
| Bolts of fastening of a head of cylinders to a cover of a drive of GRM (M8) | 20 |
| Bolts for fastening the timing cover to the engine crankcase | |
| M6 | - |
| M8 | 20 |
| Bolts of fastening of the pallet crankcase | |
To engine block | |
| 9 |
| 20 |
| - |
| To timing cover (M6) | 9 |
| Side bolts | 9 |
| Oil pan drain plug (M14) | 30 |
| Vibration damper center bolt | |
| Strength class 8.8 | |
| 200 |
| Pull up to 90° |
| Strength class 10.9 | |
| 325 |
| Pull up to 90° |
| Bolts of fastening of the K/V compressor to a cover of the GRM drive | 20 |
| Bolts of fastening of covers of bearings of camshafts to a head of cylinders | 9 |
| Bolt of fastening of an asterisk of a final camshaft | 18 |
| Bolt of fastening of an intermediate asterisk of TNVD | 40 |
| Timing chain tensioner to timing chain cover | 80 |
| Bolts of fastening of a head of cylinders | |
| To timing cover (M8) | 20 |
| To engine block (M12) | |
| 60 |
| Pull up to 90° |
| Pull up to 90° |
| Pressure line nut injection pump/fuel distribution line | 20 |
| Knot for connecting the front catalytic converter to the turbocharger | 30 |
| Bolt of fastening of a line of removal of oil of a turbocharger | 9 |
| Bolts of fastening of a basic arm to a turbocharger | 30 |
| Bolts of a distributive sleeve of a path of pressurization of air | |
| - |
| 16 |
| Air path clamps | 3 |
| Bolt of fastening of a support arm to a distributive sleeve of a path of pressurization of air | 20 |
| Support Bracket to Engine Mounting Bracket Bolt | 40 |
| Bolts for fastening the electric motor for shutting off the intake port to the air distribution sleeve of the boost path | 9 |
| Nuts of fastening of a final collector on a head of cylinders | 30 |
| Bolts of fastening of a back face cover of the engine | 9 |
| Bolts of fastening of a flywheel/drive disk to a cranked shaft | |
| 45 |
| Pull up to 90° |
| Oil filter housing cover | 25 |
| Fastening of the liquid heat exchanger of the oil filter | 15 |
| Bolts of fastening of the pallet crankcase | |
To engine block | |
| 9 |
| 20 |
| - |
| To transmission housing | 40 |
| To timing cover (M6) | 9 |
| Bolts of fastening of the sensor of level of oil to the pallet of a crankcase | 14 |
| Oil pump mounting bolts | 18 |
| M628 | |
| Auxiliary drive belt tensioner in crankcase | 30 |
| Knot for connecting the front catalytic converter to the turbocharger | 15 |
| Bolts of fastening of the hydrotransformer to a driving disk (M8) | 42 |
| Union nuts/hollow bolts for fitting lines of the ATF cooling path | 35 |
| Steering pump pressure line attachment points | |
| М14x1.5 | - |
| M16x1.5 | 45 |
| Hollow bolt of the union connection of the oil outlet line to the radiator | 30 |
| Bolt of fastening of the refrigerator line to the K/V compressor | 20 |
| Bolts of fastening to the AT engine | |
| M10x40 and M10x90 | 40 |
| M12 | - |
| Bolts of fastening of a forward cover of a head of cylinders | 14 |
| Timing chain riveted pins (indicative value) | 28 |
| Bolts of fastening of covers of bearings of camshafts to a head of cylinders | 9 |
| Bolt of fastening of an asterisk of a final camshaft | 18 |
| Bolt of fastening of an intermediate asterisk of TNVD | 40 |
| Timing chain tensioner to timing chain cover | 80 |
| Bolts for fastening the centrifuge cover to the engine crankcase | 8 |
| Bolts of fastening of heads of cylinders | |
| To timing cover (M8) | 20 |
| To engine block | |
| Stage 1 | 20 |
| Stage 2 | 60 |
| Stage 3 | Pull up to 90° |
| Stage 4 | Pull up to 90° |
| Stage 5 | Pull up to 90° |
| Bolt of fastening of the line of removal of oil to a turbocharger | 9 |
| Bolts of fastening of a basic arm to a turbocharger | 30 |
| Nuts of fastening of a final collector on a head of cylinders | 30 |
| Bolts of fastening of a back face cover of the engine | 9 |
| Oil pan drain plug (M14) | 32 |
| Bolts of fastening of the pallet crankcase | |
| To engine block | |
| M6 | 19 |
| M8 | 20 |
| M10 | - |
| To transmission housing | 40 |
| To timing cover (M6) | 9 |
| Vibration damper center bolt | |
| Stage 1 | 275 |
| Stage 2 | Pull up to 90° |
| Bolts of fastening of a driving disk to a cranked shaft | |
| Stage 1 | 45 |
| Stage 2 | Pull up to 90° |
| Oil filter housing cover | 25 |
| Fastening of the liquid heat exchanger of the oil filter | 15 |
| Attaching the vent line to the left intake manifold | 11 |
| Self-tapping bolts securing the lower section of the oil pan to the upper | |
| Thread not cut | 12 |
| thread cut | 8 |
| Bolts securing the upper section of the oil pan to the engine block (M6) | 8 |
| Oil pump mounting bolts (TORX) | 8 |
| Screws of fastening to assembly of the oil pump of a cover with an oil tube | 10 |