The engine cylinders are cast from gray cast iron in one piece with the cylinder block. The cylinder heads are made of light alloy and are bolted to the cylinder block. Steel valve guides are pressed into the cylinder head. A two-section oil pan is attached to the bottom of the engine block, into which oil flows, which is necessary for lubricating and cooling the engine.
The engines use a cross-flow arrangement in which air enters the engine cylinders from one side and exhaust gases are expelled from the other side of the engine. The injectors supply fuel directly to the engine cylinders.
Technical data
Cylinder block
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Cylinder inner diameter, mm:
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1st nominal
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78,306–78,310
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2nd nominal
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78,310–78,314
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1st enlarged
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78,346–78,350
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2nd enlarged
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78,350–78,354
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Pistons
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Piston diameter, mm:
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1st nominal
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78,253–78,261
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2nd nominal
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78,259–78,267
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1st enlarged
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78,293–78,301
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2nd enlarged
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78,299–78,307
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Crankshaft
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Axial clearance, mm:
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nominal
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0,090–0,251
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maximum allowable
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0,28
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Radial clearance, mm:
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nominal
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0,018–0,045
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maximum allowable
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0,1
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Main neck diameter, mm:
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1st
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64,968–64,948
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2nd, 3rd, 4th, 5th
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64,978–64,958
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Piston rings
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Gap in the lock of the piston ring, mm:
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upper compression
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0,20–0,35
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lower compression
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0,70–0,90
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oil scraper
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0,25–0,50
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Piston groove clearance, mm:
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compression ring
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0,045–0,085
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oil scraper ring
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0,025–0,065
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connecting rods
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Radial clearance in the connecting rod bearing, mm:
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nominal
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0,030–0,079
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maximum allowable
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0,12
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cylinder head
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Deviation from the flatness of the mating
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cylinder head surface, mm
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0,1
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Camshafts
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Axial clearance, mm:
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nominal
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0,06–0,15
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maximum allowable
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0,3
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Radial clearance, mm:
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nominal
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0,035–0,085
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maximum allowable
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0,1
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valves
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Inlet / outlet, mm:
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plate diameter
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27,00–27,20/ 24,00–24,20
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rod diameter
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5,968– 5,982/ 5,958–5,972
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valve length
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98,95–99,28/ 98,95–99,25
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chamfer angle
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45°–45°20'/ 45°–45°20'
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Tightening torques* of main threaded connections, Н·м
Turbocharger bracket
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22
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EGR mechanical valve bracket
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22
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Exhaust pipe to turbocharger
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25
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Torque compensator support to long beam
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40
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engine mounts
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40
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PTO shaft heat shield
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23
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A/C compressor to bracket
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22
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Discharge line to power steering pump
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50
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Collars of fastening of hoses of system of cooling
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2
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Toothed belt pulley to camshaft
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75
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Roller with eccentric to cylinder block
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45
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Vibration damper to crankshaft pulley
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22
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Screw plug at the top of the oil pan
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35
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Oil filler cap to cylinder head
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10
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EGR valve connecting pipe
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22
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An exhaust manifold
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10
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Air pipe to turbocharger
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10
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Main bearing cap bolts:
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stage 1
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30
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stage 2
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50
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stage 3
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tighten the bolts at an angle of 90°
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Cylinder head cover to cylinder head
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10
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Injectors to cylinder head
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10
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Fuel injection control unit (Rail element) to intake manifold
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30
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High pressure fuel lines
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30
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The middle pipe of the cooling system to the cylinder head
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10
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Crankcase ventilation pipe
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10
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High pressure fuel pump
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22
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Rear toothed belt guard:
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M6
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10
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M8
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22
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Guide roller to cylinder block
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70
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Turbocharger
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20 Н·м + tighten bolts by 90°
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* For other threaded connections, the tightening torques are as follows, Nm: M6 - 10; M8 - 20; M10 - 45; M12 - 65.
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