4. Engine
Specifications
|
The parameters used at implementation of the procedures described in the present Chapter are specified below. Detailed standard data it is possible to receive HUNDRED Mercedes-Benzs at company car repair shops. Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type. |
|
Only the values typical for all engines of the considered series are listed below. |
Petrol models
General parameters
Engine type | |
|
The V-shaped, 6-cylinder, DOHC, with water cooling, the GRM chain drive and microprocessor management |
|
The V-shaped, 8-cylinder, DOHC, with water cooling, the GRM chain drive and microprocessor management |
Model range of application | |
|
112.945 |
|
113.962 |
|
113.982 |
Engine displacement, l | |
M112 | 3.2 |
M113 | |
|
5.0 |
|
5.5 |
The number of valves on the cylinder | 3 |
Extent of compression | 10.0:1 |
Pressure of a compression, atm | |
|
12 ÷ 14 |
|
9.0 |
|
1.5 |
Operating procedure of cylinders | |
|
1-5-3-6-2-4 |
|
1-5-4-8-6-3-7-2 |
Valvate gaps | Automatic adjustment, - hydrocompensators |
Head of cylinders
Casting
Classification of laying of heads of cylinders for engines
Obozna- |
Volume |
Diameter tsilind- |
Marking |
|
112.945 |
3.2 |
92.00 |
And 1120160320/0420 |
|
113.962 |
5.0 |
97.00 |
And 1130100220/0320 | |
113.982 |
5.5 |
Data are absent |
Data are absent |
Data are absent |
Sizes of bolts of fastening of a head of cylinders
Carving | M11 |
Length (L), mm | |
|
141.5 |
|
144.5 |
The directing plugs of valves
The scheme of landing of the directing plugs of valves
|
|
1 — the Directing plug of the inlet valve |
And — the Landing depth of the plug L — the Full length of the plug |
The directing plugs of valves
Diameter of a nest under landing of the directing plug of the valve, mm | |
|
12.500 ÷ 12.511 |
|
12.520 ÷ 12.531 |
|
12.700 ÷ 12.711 |
|
13.100 ÷ 13.111 |
Outer diameter of the directing plug of the valve, mm | |
|
12.540 ÷ 12.551 |
|
12.560 ÷ 12.571 |
|
12.740 ÷ 12.751 |
|
13.140 ÷ 13.151 |
Length of the directing plug of the valve, mm | |
|
50 |
Geometrical characteristics of the directing plug, mm |
And 14.3 ± 0.2 |
Details of installation and geometrical parameters of valvate saddles (engines of series 112 and 113)
Saddles of valves
|
Engines of series 112 and 113 And — Diameter of a core |
Geometrical parameters of valves (see сопр. illustration) | |
D, mm | |
M112 | |
|
36 ± 0.1 |
|
41 ± 0.1 |
M113 | |
|
38 ± 0.1 |
|
43 ± 0.1 |
With (for the new valve), mm | |
|
1.2 |
|
1.6 |
And, mm | |
|
6.975 |
|
6.970 |
In, mm | |
M112 | |
|
119.40 ± 0.2 |
|
122.25 ± 0.2 |
M113 | |
|
119.10 ± 0.2 |
|
121.80 ± 0.2 |
Block of cylinders
Case
Diameter of cylinders, mm | |
M112 | |
Standard size | |
|
89.900 ÷ 89.915 |
|
89.950 ÷ 89.965 |
Repair size | 90.150 ÷ 90.165 |
M113 | |
Standard size | |
|
97.000 ÷ 97.015 |
|
97.050 ÷ 97.065 |
Repair size | 97.250 ÷ 97.265 |
Bent shaft
The sizes of bolts of fastening of covers of conrod bearings (see сопр. illustration) | |
Carving | M8x1 |
Length, mm | |
|
47 |
|
47.6 |
Designations of persistent half rings of a bent shaft
Block
cylinders |
Pin of a bent shaft
|
Persistent half rings
|
Size of axial
side play of a shaft, mm |
||
Obozn.
|
Inscription
|
Obozn.
|
Brands -
rovka |
||
Code
|
N
|
O
|
N
|
Warranty and digital code
|
0,10 ÷ 0,266
|
Code
|
N1
|
1
|
N1
|
Warranty and digital code
|
0,10 ÷ 0,266
|
Balancing shaft (series 112)
Extreme admissible length of a bolt of fastening of a counterbalance, mm |
50.7 |
Conrod and piston assemblies
Diameter of pistons, mm | |
M112 | |
Standard size | |
|
89.872 ÷ 89.902 |
|
89.872 ÷ 89.902 |
Repair size | 90.122 ÷ 90.152 |
M113 | |
Standard size | |
|
96.972 ÷ 97.000 |
|
97.022 ÷ 97.050 |
Repair size | 97.222 ÷ 97.250 |
Maximum admissible size of a side play of pistons, mm | 0.043 |
Size of a radial side play of conrod bearings (new bearings), mm | 0.026 ÷ 0.054 |
Axial side play of rods
Color marking of an insert
|
Size of an axial rod, mm
|
|
Top inserts (rods)
|
Lower inserts (covers)
|
|
Yellow
|
Yellow
|
0,026 ÷ 0,054
|
Blue
|
Red
|
0,026 ÷ 0,054
|
Red
|
Blue
|
0,026 ÷ 0,054
|
Sizes of piston rings, mm | |
Compression rings | |
M112 | 83.2x1.5x3.1 |
M113 | |
|
97.0x1.2x3.5 |
|
97.0x1.5x3.1 |
Oil scraper ring | |
M112 | 83.2x3.5x3.5 |
M113 | |
|
97.0x1.5x4.0 |
|
97.0x3.5x3.5 |
Efforts of tightening of threaded connections, Nanometer
Drain stopper of the pallet of a case of the engine (M14) | 30/32 |
Cover of a casing of an oil filter | 25 |
Self-cut bolt of fastening of a natyazhitel to a GRM drive cover | |
|
35 |
|
25 |
Bolts of fastening of a damper of a natyazhitel of a belt | |
drive of auxiliary units | |
|
25 |
|
35 |
Bolts of fastening of a natyazhitel | 25 |
Nipple knot of connection of the giving fuel pipe to the fuel highway | 38 |
Flange connection of a reception pipe of system of production of the fulfilled gases with a final collector | 20 |
Bolts of fastening of a starter to an engine case | 42 |
Bolts of fastening of pillows of forward support to a stretcher | 35 |
Bolts of M8 of fastening of the hydrotransformer to a driving disk | 42 |
Bolts of fastening of AT to the engine | |
|
40 |
|
- |
Knots of fastening of hydraulic lines to the steering pump | |
Pressure head line | |
|
- |
|
45 |
Returnable line | 2 |
Screws of fastening of the K/V compressor to a basic arm | 20 |
Bolts of fastening of a cover of the GRMK drive to the block and head of cylinders | 20 |
Bolt of M8x78 of fastening of the directing pulley of a belt of the K/V drive and auxiliary агрегатовк to a GRM drive cover | 68 |
Bolts of fastening of the water pump | |
|
|
|
|
|
14 |
|
10 |
|
|
|
35 |
|
25 |
|
10 |
Fastening of a pulley of the drive of the water pump | 10 |
Bolts of fastening of a casing of the thermostat (M6) | 10 |
Bolts of fastening of the steering pump | |
|
|
|
35 |
|
20 |
|
25 |
Bolts of fastening of the inlet pipeline to heads of cylinders (M8) | 20 |
Natyazhitel of a chain in a GRM drive cover | 80 |
Bolt of fastening of asterisks of camshafts (M12x45) | |
|
50 |
|
To hold on on a corner 90 ° |
Hall's sensor of the camshaft in a head of cylinders | 8 |
Bolts of fastening of bridges of bearings of camshafts to golovkamkhilindrov | |
|
|
|
15 |
|
- |
|
|
|
10 |
|
To hold on on a corner 90 ° |
Bolts of fastening of asterisks of camshafts (M12x45) | |
|
50 |
|
To hold on on a corner 90 ° |
Bolts of fastening of a head of cylinders | |
|
|
|
10 |
|
30 |
|
To hold on on a corner 90 ° |
|
To hold on on a corner 90 ° |
|
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 a reception pipe of system of production of the fulfilled gases with a final collector | 20 |
Nuts of fastening of a final collector | 16 |
Bolts of fastening of a face cover of the engine | 10 |
Central bolt of fastening of a damper of tortional fluctuations | |
|
200 |
|
To hold on on a corner 95 ° |
Bolts of fastening of a driving disk to a bent shaft | |
|
45 |
|
To hold on on a corner 90 ° |
Bolts of fastening of covers of radical bearings | |
|
|
|
|
|
20 |
|
To hold on on a corner 90 ° |
|
30 |
|
|
|
30 |
|
To hold on on a corner 90 ° |
Bolts of fastening of covers of the lower heads of rods | |
|
5 |
|
25 |
|
To hold on on a corner 90 ° |
Bolt of M7x16.5 of fastening of a lock plate to a balancing shaft (M112) | 15 |
Bolt of fastening of a counterbalance to a balancing shaft (M112) | |
|
20 |
|
To hold on on a corner 90 ° |
Bolts/nut of fastening of a pillow of a back support of a suspension bracket of the power unit | |
|
35 |
|
35 |
Nuts of fastening of a cross beam to a car frame | 35 |
Bolts of fastening of the left and right side support of a suspension bracket of the power unit to an engine case | |
|
20 |
|
To hold on on a corner 90 ° |
Bolts of fastening of pillows of forward support of a suspension bracket of the power unit | |
|
35 |
|
65 |
Cover of a casing of an oil filter | 25 |
Bolts of fastening of a casing of assembly of an oil filter | 70 |
Fastening of the liquid heat exchanger of an oil filter | 11 |
Drain stopper of the pallet of a case (M14) | 30 |
Self-cut bolts of fastening of the lower section of the pallet of a case to top | |
|
14 |
|
10 |
Bolts of fastening of the top section of the pallet of a case to the block of cylinders | |
|
9 |
|
20 |
Bolts of fastening of the sensor of level of oil | |
to the top section of the pallet of a case | 10 |
Bolts of fastening of masloraspylitel | 15 |
Bolts of fastening of the oil pump (M8x30) | 20 |
Diesel models
|
Only the values typical for all engines of the considered series are listed below. |
General parameters
Engine type | |
|
Line (R), 5-cylinder, DOHC, turbocharged, with water cooling, the GRM chain drive |
|
The V-shaped, 8-cylinder, DOHC, turbocharged, with water cooling, the GRM chain drive |
Model range of application | |
|
612.965 |
|
628.962 |
Engine displacement, l | |
|
2.7 |
|
4.0 |
The number of valves on the cylinder | 4 |
Pressure of a compression, atm | |
|
29 ÷ 35 |
|
18 |
The maximum admissible difference in indications between cylinders | 3.0 |
Operating procedure of cylinders | |
|
1-2-4-5-3 |
|
1-5-4-8-6-3-7-2 |
Valvate gaps | Are not regulated since hydrocompensators are used |
Head of cylinders
M612
Casting
Sizes of bolts of fastening of a head of cylinders
Carving | M12 |
Length, mm | |
|
|
|
102 |
|
104 |
|
|
|
107 |
|
- |
Details of installation of valves in a head of cylinders (series 612 engines)
and — Landing of the new valve at a new saddle |
N — Height of a head of cylinders |
Full height of a head of cylinders, mm | |
Nominal rate | 126.85 ÷ 127.15 |
Extreme admissible value | - |
Saddles of valves
Boring of saddles of valves (series 612 engines)
|
|
b — Width of a working facet |
g — the Adjustment corner |
Geometrical characteristics of a saddle of the valve | |
All valves | |
|
45 ° (-30') |
|
1.0 ÷ 1.5 |
|
30 ° (± 15') |
|
0.9 ÷ 1.1 |
Maximum admissible ovality, mm | 0.03 |
Valves
|
D — Diameter of a plate |
Diameter of a plate (D), mm | |
|
30.1 ÷ 30.3 |
|
28.3 ÷ 28.5 |
Height of a cylindrical part (corbel) of a plate (h), mm | |
|
1.7 ÷ 1.9 |
Tilt angle of a working facet (a) | |
|
45 ° (+15') |
Diameter of a core (D1), mm | |
|
6.960 ÷ 6.975 |
|
6.955 ÷ 6.970 |
Superficial reinforcing of a saddle | |
|
No |
Sodium filling | |
|
No |
Length of the valve (L), mm | |
|
104.7 ÷ 104.9 |
|
104.5 ÷ 104.9 |
Identification marking of a plate | |
|
Е 611 01 |
|
And 611 01 05 |
Distance from a valve core end face to the basis of the bearing of the camshaft (T), mm | |
|
17.1 ÷ 17.9 |
Landing of the new valve at a new saddle (a), mm | |
|
1.1 ÷ 1.5 |
|
1.0 ÷ 1.4 |
Series 628
Casting
Sizes of bolts of fastening of a head of cylinders
Carving | M12 |
Length, mm | |
|
201.5 |
|
203 |
Block of cylinders
Series 612
Flywheel
Extreme size of a cross beating of a gear wreath, mm | 0.4 |
Diameter of the aligning plug of a gear wreath, mm | 276.05 (± 0.05) |
Case
Diameter of beds of radical bearings, mm | 62.500 ÷ 62.519 |
Width of a bed of the persistent bearing, mm | 19.979 ÷ 20.000 |
Extreme admissible size of ovality / conicity of beds of radical bearings, mm | 0.02 |
Bent shaft
Sizes of bolts of fastening of covers of radical bearings | |
Carving | M11 |
Length (L), mm | |
|
61.8 ÷ 62.2 |
|
63.8 |
Sizes of side plays of a bent shaft in radical bearings, mm | |
|
|
|
0.03 ÷ 0.05 |
|
0.08 |
|
|
|
0.10 ÷ 0.25 |
|
0.3 |
Inserts of radical bearings
Thickness of inserts of radical bearings (top and lower inserts), mm | |
Standard size (Ø of 58.00 mm) | |
|
2.255 ÷ 2.260 |
|
2.260 ÷ 2.265 |
|
2.265 ÷ 2.270 |
|
2.270 ÷ 2.275 |
|
2.275 ÷ 2.280 |
Conrod and piston assemblies
The size of a vystupaniye of the piston (a) in a new case, mm | 0.38 ÷ 0.62 |
Size of a side side play of piston rings, mm | |
|
0.12 ÷ 0.16 |
|
0.05 ÷ 0.09 |
|
0.03 ÷ 0.07 |
The size of gaps in locks of piston rings, mm | |
|
0.22 ÷ 0.42 |
|
0.20 ÷ 0.40 |
|
0.20 ÷ 0.40 |
Bolts of fastening of the lower heads of rods | |
|
8x1 |
|
|
|
47 ± 0.3 |
|
48 |
Sizes of rods | |
Distance between centers the conrod bearing and an opening under landing of a piston finger (L), mm | 148.970 ÷ 149.030 |
Width of heads of a rod (In and b), mm | 21.940 ÷ 22.000 |
Internal diameter of the lower head of a rod (D1), mm | 51.600 ÷ 51.614 |
Extreme admissible sizes of ovality and conicity of a bed of a shatunnogopodshipnik, mm | 0.02 |
The extreme admissible size of twisting of a rod on length more than 100 mm | 0.100 |
Extreme admissible size of violation of coaxiality of heads of a rod, mm | 0.045 |
Internal diameter of the plug top golovkishatuna (d), mm | 30.018 ÷ 30.024 |
Basic diameter of the plug of the top head of a rod (d1), mm | 32.500 ÷ 32.525 |
The size of a side play of landing of a porshnevogopalets in a rod, mm | 0.018 ÷ 0.024 |
Limit admissible difference of scales of conrod assemblies, | 2 |
Series 628
Case
Diameter of beds of radical bearings, mm | |
Basic value | 74.500 ÷ 74.519 |
|
74.500 ÷ 74.506 |
|
74.506 ÷ 74.512 |
|
74.512 ÷ 74.519 |
Width of a bed of the persistent bearing, mm | 25.29 ÷ 25.50 |
Extreme admissible size of ovality/conicity of beds of radical bearings, mm | 0.02 |
Bent shaft
Sizes of bolts of fastening of the lower section of a case (bridge of covers of radical bearings) | |
Carving | M11 |
Length (L), mm | |
|
|
|
113 |
|
115 |
|
|
|
135 |
|
137 |
Sizes of side plays of a bent shaft in radical bearings, mm | |
|
|
|
0.03 ÷ 0.05 |
|
0.08 |
|
|
|
0.10 ÷ 0.25 |
|
0.3 |
Inserts of radical bearings
Thickness of inserts of radical bearings (top and lower inserts), mm | |
Standard size (Ø of 70.00 mm) | |
|
2.252 ÷ 2.257 |
|
2.257 ÷ 2.262 |
|
2.262 ÷ 2.267 |
|
2.267 ÷ 2.272 |
|
2.272 ÷ 2.277 |
Conrod and piston assemblies
Bolts of fastening of the lower heads of rods | |
Carving | 8x1 |
Length (L) (see сопр. illustration), mm | |
|
47 |
|
48 |
Size of a side side play of piston rings, mm | |
|
0.12 ÷ 0.16 |
|
0.065 ÷ 0.110 |
|
0.03 ÷ 0.07 |
The size of gaps in locks of piston rings, mm | |
|
0.40 ÷ 0.55 |
|
0.25 ÷ 0.50 |
|
0.20 ÷ 0.40 |
Efforts of tightening of threaded connections, Nanometer
All engines | |
Cover of a casing of an oil filter | 25 |
Bolt of fastening of the fuel filter to the air distributor | |
|
14 |
|
9 |
Screw of a coupling collar of fastening of the fuel filter (M612) | 9 |
Series 612 | |
Screws of fastening of the finishing panel of a cover of a head of cylinders | 10 |
Screws of fastening of the finishing panel of the air distributor | 10 |
Bolts of a basic arm of a sleeve of distribution of air of pressurization | 20 |
Knots of fastening of the pressure head line of the steering pump | |
|
- |
|
45 |
Hollow bolt of nipple connection of the maslootvodyashchy line to a radiator | 30 |
Bolts of fastening of the K/V compressor to a GRM drive cover | 20 |
Fastening bolts to the AT engine | |
|
40 |
|
- |
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 the GRM (M8) drive | 20 |
Bolts of fastening of a cover of the GRM drive to an engine case | |
|
- |
|
20 |
Bolts of fastening of the pallet of a case | |
|
|
|
9 |
|
20 |
|
- |
|
9 |
|
9 |
Drain stopper of the pallet of a case (M14) | 30 |
Central bolt of a damper of tortional fluctuations | |
|
|
|
200 |
|
To hold on on a corner 90 ° |
|
|
|
325 |
|
To hold on on a corner 90 ° |
Bolts of fastening of the K/V compressor to a GRM drive cover | 20 |
Bolts of fastening of covers of bearings of camshafts to a head of cylinders | 9 |
Bolt of fastening of an asterisk of the final camshaft | 18 |
Bolt of fastening of an intermediate asterisk of TNVD | 40 |
Bolt of fastening of a natyazhitel of a gas-distributing chain to a GRM drive cover | 80 |
Bolts of fastening of a head of cylinders | |
|
20 |
|
|
|
60 |
|
To hold on on a corner 90 ° |
|
To hold on on a corner 90 ° |
Nut of the TNVD pressure head line / fuel distributive highway | 20 |
Knot of connection of the forward catalytic converter to a turbocompressor | 30 |
Bolt of fastening of the line of removal of oil of a turbocompressor | 9 |
Bolts of fastening of a basic arm to a turbocompressor | 30 |
Bolts of a distributive sleeve of a path of pressurization of air | |
|
- |
|
16 |
Collars of an air path | 3 |
Bolt of fastening of a basic arm to a distributive sleeve of a path of pressurization of air | 20 |
Bolt of fastening of a basic arm to an assembly bracket of the engine | 40 |
Bolts of fastening of an electric motor of shutdown of inlet port to a sleeve of distribution of air of a path of pressurization | 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 / a driving disk to a bent shaft | |
|
45 |
|
To hold on on a corner 90 ° |
Cover of a casing of an oil filter | 25 |
Fastening of the liquid heat exchanger of an oil filter | 15 |
Bolts of fastening of the pallet of a case | |
|
|
|
9 |
|
20 |
|
- |
|
40 |
|
9 |
Bolts of fastening of the sensor of level of oil to the case pallet | 14 |
Bolts of fastening of the oil pump | 18 |
Bolts of fastening of covers of the lower heads of rods (conrod bearings) | |
|
5 |
|
25 |
|
To hold on on a corner 90 ° |
Bolts of fastening of covers of radical bearings of a bent shaft (M11) | |
|
55 |
|
To hold on on a corner 90 ° |
Series 628 | |
Natyazhitel of a belt of the drive of vspomogatelnykhagregat in an engine case | 30 |
Knot of connection of the forward catalytic converter to a turbocompressor | 15 |
Bolts of fastening of the hydrotransformer to a driving disk (M8) | 42 |
Cap nuts / hollow bolts of nipple lines of a path of cooling of ATF | 35 |
Knots of fastening of the pressure head line of the steering pump | |
|
- |
|
45 |
Hollow bolt of nipple connection of the maslootvodyashchy line to a radiator | 30 |
Bolt of fastening of the refrigerator line to the K/V compressor | 20 |
Fastening bolts to the AT engine | |
|
40 |
|
- |
Bolts of fastening of a forward cover of a head of cylinders | 14 |
Pins of riveted links of a gas-distributing chain (approximate value) | 28 |
Bolts of fastening of covers of bearings of camshafts to a head of cylinders | 9 |
Bolt of fastening of an asterisk of the final camshaft | 18 |
Bolt of fastening of an intermediate asterisk of TNVD | 40 |
Bolt of fastening of a natyazhitel of a gas-distributing chain to a GRM drive cover | 80 |
Bolts of fastening of a cover of the centrifuge to an engine case | 8 |
Bolts of fastening of heads of cylinders | |
|
20 |
|
|
|
20 |
|
60 |
|
To hold on on a corner 90 ° |
|
To hold on on a corner 90 ° |
|
To hold on on a corner 90 ° |
Bolt of fastening of the line of removal of oil to a turbocompressor | 9 |
Bolts of fastening of a basic arm to a turbocompressor | 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 |
Drain stopper of the pallet of a case (M14) | 32 |
Bolts of fastening of the pallet of a case | |
|
|
|
19 |
|
20 |
|
- |
|
40 |
|
9 |
Bolts of fastening of the top section of the pallet of a case to the block of the engine (M6) | 8 |
Central bolt of a damper of tortional fluctuations | |
|
275 |
|
To hold on on a corner 90 ° |
Bolts of fastening of a 2-section flywheel / a driving disk to a bent shaft | |
|
45 |
|
To hold on on a corner 90 ° |
Cover of a casing of an oil filter | 25 |
Fastening of the liquid heat exchanger of an oil filter | 15 |
Fastening of the ventilating line to the left inlet pipeline | 11 |
Self-cut bolts of fastening of the lower section of the pallet of a case to top | |
|
12 |
|
8 |
Bolts of fastening of the oil pump (TORX) | 8 |
Fastening screws to assembly of the oil pump of a cover with an oil tube | 10 |
Nut of fastening of a forward support to an arm | 110 |
Bolts of fastening of covers of the lower heads of rods (conrod bearings) | |
|
5 |
|
25 |
|
To hold on on a corner 90 ° |
Bolts of fastening of the lower section of a case | |
|
8.5 |
|
20 |
|
|
|
20 |
|
50 |
|
To hold on on a corner 90 ° |
|
To hold on on a corner 90 ° |