CYLINDER HEAD
| Max. distortion, mm | 0.5 |
|---|---|
| Max. distortion, transverse, mm | 0.2 |
| Height mm | 149.4 ± 0.15 |
CYLINDER HEAD
| Radial run-out main bearing journal mm | Max. 0.040 |
|---|---|
| Axial play (Measured in the engine with the intermediate section tightened) mm | 0.08-0.19 |
| Main bearing journal, radial runout mm | 0.020-0.043 |
CRANKSHAFT
| Diameter, standard 1 mm | 50.000 0.000/-0.016 |
|---|---|
| Bearing recess width mm | 26.0 ± 0.1 |
| Maximum out-of-round mm | 0.004 |
| Maximum taper mm | 0.004 |
| The variation in diameter for each bearing journal must not exceed 0.008 mm. | |
BIG END JOURNALS
| Diameter, standard 1 mm | 65.000 + 0.003/-0.016 |
|---|---|
| Axial bearing width mm | 26.00 0.00/-0.04 |
| Maximum out-of-round mm | 0.004 |
| Maximum taper mm | 0.004 |
| The variation in diameter for each bearing journal must not exceed 0.008 mm. | |
MAIN BEARING JOURNALS
| Diameter, bearing recesses | |
|---|---|
| Big end mm | 53.000 0.000/+0.013 |
| Small-end mm | 21.000 +0.005/+0.011 |
| Maximum ovality in the bearing recesses mm | 0.006 |
| Length | |
| Big end - Small end mm | 147 |
CONNECTING RODS
| Oil pressure (min.) | |
|---|---|
| 13.3 r/s (800 rpm) Mpa 1 | 0.10 |
| 14.2 r/s (850 rpm) Mpa 1 | 0.10 |
| 66.7 r/s (4000 rpm) Mpa 1 | 0.35 |
| Maximum oil pressure (the relief valve opens) Mpa 1 | 0.48 |
| The oil pressure given is for an oil temperature of 100°C, which is reached after 10-15 minutes driving. | |
OIL PRESSURE
| Desired value | |
|---|---|
| Relative pressure | 380 kPa |
| Absolute pressure | 480 kPa |
FUEL LINE PRESSURE
| Begins to open at | 90°C |
|---|---|
| Fully open at | 105°C |
THERMOSTAT
See ENGINE
| B5254T3 | |
|---|---|
| Engine code | 68 |
| Power (kw/rpm) | 162/5000 |
| Max torque (Nm/rpm) | 320/1500-4800 |
| Max rpm | 6500/6800 |
| Idling (rpm) | 720 |
| Cylinder bore (mm) | 83 |
| Stroke (mm) | 93.2 |
| Swept volume (litres) | 2.521 |
| Firing sequence | 1-2-4-5-3 |
| Engine control system | Bosch ME 9 |
| Weight, complete, including oil (kg) | 170 |
GENERAL DATA
ENGINE MANUFACTURE NUMBER, ENGINE SERIAL NUMBER AND TYPE
The engine serial number and type are stamped on the left side of the cylinder block at the top of the mounting for the water pump.
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 into the engine block and crankshaft. The classification marking is in the engine block above the oil cooler and crankshaft. The classification shall be read from the digit 1 to 6. The first letter after the digit 1 corresponds to the classification of main bearing 1. The bearing positions are numbered starting at the engine's leading edge.
- Classification cylinder block
- Classification crankshaft
- Cylinder block
- Intermediate section
CYLINDER BLOCK
| Standard | |
|---|---|
| C-marked mm | 83.000-83.010 |
| D-marked mm | 83.010-83.020 |
| E-marked mm | 83.020-83.030 |
CYLINDER BORE (D)
COOLING DUCT, ENGINE BLOCK
| Length mm | 0.7-1.0 |
PISTONS
| Standard | The diameter is measured 12 mm from the bottom of the piston |
|---|---|
| C-marked 1 mm | 82.950-82.960 |
| D-marked 1 mm | 82.960-82.970 |
| E-marked 1 mm | 82.970-82.980 |
| Classification is marked on the top of the piston. | |
PISTONS
| Tolerance piston/cylinder - top mm | 0.010 - 0.030 |
PISTON RUNNING CLEARANCE
| Top ring mm | 1.2 -0.01/-0.03 |
|---|---|
| 1st ring mm | 1.5 -0.01/-0.03 |
| Oil ring mm | 2 - 0.01/-0.136 |
PISTON RINGS
| Diameter mm | 21.000 0.000/-0.004 |
|---|---|
| Length mm | 57.0 0.0/+0.2 |
PISTON PIN
VALVES
| Intake | |
|---|---|
| Length (A) mm | 102.00 ± 0.07 |
| Diameter on crown (B) mm | 31 ± 0.15 |
| Diameter on shaft (C) mm | 5.94 ± 0.07 |
| Valve angle (D) ° | 45.5 ± 0.17 |
| Clearance in guide μm | 50 - 70 |
| Valve clearance mm | 0.20 ± 0.03 |
| Exhaust | |
| Length (A) mm | 101.05 ± 0.07 |
| Diameter on crown (B) mm | 27 ± 0.15 |
| Diameter on shaft (C) mm | 5.94 ± 0.07 |
| Valve angle (D) ° | 45.5 ± 0.17 |
| Clearance in guide μm | 50 - 70 |
| Valve clearance mm | 0.40 ± 0.03 |
VALVES
| Seat angle ° | 45.5 ± 0.17 |
VALVE SEATS
| Diameter mm | 32 - 0.025/-0.040 |
|---|---|
| Length mm | 2.950 - 3.685 ± 0.010 |
TAPPETS
| Max. lift height inlet mm | 8.68 |
|---|---|
| Max. lift height exhaust mm | 9.05 |
CAMSHAFTS
| Max. distortion, mm | 0.5 |
|---|---|
| Max. distortion, transverse, mm | 0.2 |
| Height mm | 149.4 ± 0.15 |
CYLINDER HEAD
| Radial run-out main bearing journal mm | Max. 0.040 |
|---|---|
| Axial play (Measured in the engine with the intermediate section tightened) mm | 0.08-0.19 |
| Main bearing journal, radial runout mm | 0.020-0.043 |
CRANKSHAFT
| Diameter, standard 1 mm | 50.000 0.000/-0.016 |
|---|---|
| Bearing recess width mm | 26.0 ± 0.1 |
| Maximum out-of-round mm | 0.004 |
| Maximum taper mm | 0.004 |
| The variation in diameter for each bearing journal must not exceed 0.008 mm. | |
BIG END JOURNALS
| Diameter, standard 1 mm | 65.000 + 0.003/-0.016 |
|---|---|
| Axial bearing width mm | 26.00 0.00/-0.04 |
| Maximum out-of-round mm | 0.004 |
| Maximum taper mm | 0.004 |
| The variation in diameter for each bearing journal must not exceed 0.008 mm. | |
MAIN BEARING JOURNALS
| Diameter, bearing recesses | |
|---|---|
| Big end mm | 53.000 0.000/+0.013 |
| Small-end mm | 21.000 +0.005/+0.011 |
| Maximum ovality in the bearing recesses mm | 0.006 |
| Length | |
| Big end - Small end mm | 147 |
CONNECTING RODS
| Oil pressure (min.) | |
|---|---|
| 13.3 r/s (800 rpm) Mpa 1 | 0.10 |
| 14.2 r/s (850 rpm) Mpa 1 | 0.10 |
| 66.7 r/s (4000 rpm) Mpa 1 | 0.35 |
| Maximum oil pressure (the relief valve opens) Mpa 1 | 0.48 |
| The oil pressure given is for an oil temperature of 100°C, which is reached after 10-15 minutes driving. | |
OIL PRESSURE
| Desired value | |
|---|---|
| Relative pressure | 300 kPa |
| Absolute pressure | 400 kPa |
FUEL LINE PRESSURE
| Begins to open at | 90°C |
|---|---|
| Fully open at | 105°C |
THERMOSTAT
See ENGINE