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's manufacture number is stamped in the right-hand side of the cylinder block.
There is also a decal on the timing casing with the engine type, manufacturing number, and serial number.

Classification of main bearings





The marking is stamped on the cylinder block and crankshaft.






General data






Pistons



















Piston rings





Axial clearance
Upper compression ring 0.050-0.090 mm
Lower compression ring 0.030-0.070 mm
Oil ring 0.020-0.060 mm

Dimensions
Upper compression ring 1.2 mm
Lower compression ring 1.75 mm
Oil ring 3.0 mm

Wrist pin, diameter
All 23.0 +0/-0.004 mm

Valves





Valve crown diameter (A)
Inlet 31.00 ± 0.15 mm
Exhaust 27.00± 0.15 mm

Valve stem diameter (B)
Inlet 6.693 ± 0.007 mm
Exhaust 6.963 ± 0.007 mm

Total valve length (C)
Inlet 104.05 ± 0.20 mm
Exhaust 103.30± 0.30 mm

Disc edge height (D)
Inlet/exhaust 1.5 mm
Minimum height after grinding 1.2 mm

Mating surface angle (E)
Inlet 44.5°
Exhaust 44.5°





Valve stem vertical position
Valve stem height 48.5± 0.4 mm
Maximum machining of the valve stem 0.4 mm

Valve seats




Angles:
Inlet / exhaust matching surface angles 45°
Reduction angle upper inlet 15°
Reduction angle upper outlet 15°
Reduction angle lower 60°
Angle seat width (a)
Inlet 1.4-1.8 mm
Exhaust 1.8-2.2 mm

Tappets





Tappets, dimensions
External diameter (A):
B5204, B5234, B5254 32.000 +0.025/-0.041 mm
External height (B):
All 26.0 ± 0.5 mm
Distance upper side bucket tappet
Unloaded (C1):
All min18.40/max 20.40 mm
Compressed (C2):
All 16.35 +0.25/-0.1 mm

Valve springs






Valve guides





Clearance between new components:
Inlet and exhaust 0.03-0.06 mm

Maximum play for used components:
Inlet and exhaust 0.15 mm

Camshafts






Cylinder head





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

Caution! Scratches and corrosion to the cylinder head gasket face should only be machined on a flat cylinder head.

Cylinder bore diameter










Crank mechanism





Crankshaft
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





Big end journals
Diameter, standard1 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
1The variation in diameter for each bearing journal must not exceed 0.008 mm.

Main bearing journals
Diameter, standard1 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
1The variation in diameter for each bearing journal must not exceed 0.008 mm.





Connecting rods
Bearing end diameter, big end 53.000± 0.013
Max ovality 0.006 mm

Engine oil

Filling with oil after reconditioning

Oil volume, including oil filter
B5202-5254 6.6 liters

Oil grade
According to API service lowest SG
According to CCMC class G4/G5.
According to ACEA class A2/A3.

Oil pressure (min.)
13.3 r/s (800 rpm) 0.10 Mpa1
14.2 r/s (850 rpm) 0.10 Mpa1
66.7 r/s (4000 rpm) 0.35 Mpa1
Maximum oil pressure (the relief valve opens) 0.48 Mpa
1The oil pressure given is for an oil temperature of 100 °C, which is reached after 10-15 minutes driving.

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

Fuel line pressure