Specifications, Mechanical

Specifications, mechanical

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Engine manufacture number, engine serial number and type





The engine manufacture number and type are stamped on the right side of the cylinder block.
There is also a decal on the timing cover with the engine type, manufacture number and serial number.

Classification of main bearings





The marking is stamped on the cylinder block and crankshaft.






General data






Cylinder block










Pistons



















Piston rings




Upper compression ring.0.030-0.070 mm
Lower compression ring.0.030-0.070 mm
Oil control ring assembly.0.038-0.142 mm
Upper.1.20 -0.010/-0.030 mm
Lower.1.50 -0.010/-0.030 mm
Spring.1.51 ± 0.020 mm
Rail.0.46 ± 0.011 mm

Piston pin

Diameter.21.000 +/-0.004 mm

Valves




Inlet.31.00 ± 0.15 mm
Exhaust.27.00 ± 0.15 mm
Inlet.6.970 +0/-0.015mm
Exhaust
H1 = 17.40 mm.6.963 ± 0.007 mm
Exhaust
H2 = 70.40 mm.6.953 ± 0.007 mm
Inlet.104.25 ± 0.25 mm
Exhaust.103.30 ± 0.25 mm
Inlet and exhaust.1.50 mm
Minimum height after grinding.1.20 mm
Inlet and exhaust.44.5°




Valve stem height.48.4± 0.5 mm
Maximum machining of the valve stem.0.5 mm

Valve seats










Tappets










Valve springs






Valve guides




Inlet and exhaust.0.03-0.06 mm
Inlet and exhaust.0.15 mm

Camshafts






Cylinder head




Front-rear.0.50 mm
Lateral.0.20 mm
Cylinder head height.129.0± 0.05 mm
Maximum machining.0.30 mm

Caution! Reworking of scratches and corrosion on the cylinder head's gasket face against the engine block should only be performed on a flat cylinder head.

Crank mechanism




Main bearing journal radial runout.maximum 0.040 mm
Axial play (Measured in the engine with the intermediate section tightened).0.08-0.19 mm
Main bearing journal radial runout.0.019-0.043 mm




Diameter, standard. 50.000 0/-0.016
Bearing recess width. 26.0 ± 0.1 mm
Maximum out-of-round. 0.004 mm
Maximum taper. 0.004 mm

The variation in diameter for each bearing journal must not exceed 0.008 mm.

Diameter, standard. 65.000 +0.003/-0.016 mm
Axial bearing width. 26.00 +0/-0.04mm
Maximum out-of-round. 0.004 mm
Maximum taper.0.004 mm

The variation in diameter for each bearing journal must not exceed 0.008 mm.





Diameter, bearing recesses
Big end.53.00 -0/+0.013 mm
Small end.21.00 +0.005/+0.011 mm
Maximum ovality in the bearing recesses.0.006 mm

Length
Big end - Small end.147 mm

Caution! If the cap is turned the wrong way and tightened, the structure of the fracture surface is destroyed and then the connecting rod must be discarded.

Note! Blow the fracture surface clean with compressed air before reinstalling the cap.

Engine oil

Filling with oil after reconditioning.
B5202-5254.6.6 litres
According to API Service.lowest SG
According to CCMC.class G4/G5.
According to ACEA.class A2/A3.
13.3 r/s (800 rpm).0.10 MPa
14.2 r/s (850 rpm).0.10 MPa
66.7 r/ (4,000 rpm).0.35 MPa
Maximum oil pressure (the relief valve opens).0.48 MPa

The oil pressure listed is for an oil temperature of 100°C, which is reached after 10-15 minutes driving.

Marking.90
Starts to open at.90°C
Fully open at.105°C

Fuel line pressure