Crankshaft
The steel crankshaft is supported by three bearings.
| Axial play | 0.09 – 0.30 mm |
| Main journal diameters: | |
| – nominal size | 56,990 – 57,000 mm |
| - nominal size (with yellow mark) | 56,980 – 56,990 mm |
| – repair size -0.254 | 56.726 – 56.746 mm |
| – repair size -0.508 | 56.472 – 56.492 mm |
| – repair size -0.762 | 56.218 – 56.238 mm |
| Main bearing clearance* | 0.009 – 0.046 mm |
| Thickness of thrust half rings: | |
| – nominal size | 2,800 – 2,850 mm |
| - repair size | 2,990 – 3,040 mm |
| Crankshaft axial play | 0.079 – 0.279 mm |
| Connecting rod journal diameters: | |
| – nominal size | 42,990 – 43,010 mm |
| – repair size -0.254 | 42,740 – 42,760 mm |
| – repair size -0.508 | 42.490 – 42.510 mm |
| – repair size -0.762 | 42.240 – 42.260 mm |
* Measurements should be taken using Plastigage measuring rods.
Connecting rods
The connecting rods are forged from steel and have an I-beam cross-section.
| Connecting rod head bore diameter | 20.589 – 20.609 mm |
| Connecting rod base bore diameter | 46.685 – 46.705 mm |
| Inner diameters of connecting rod bearing holes, mm: | |
| – nominal size | 43,016 – 43,050 |
| – repair size -0.254 | 42,766 – 42,800 |
| – repair size -0.508 | 42,516 – 42,550 |
| – repair size -0.762 | 42,266 – 42,300 |
| – repair size -1.016 | 42,016 – 42,050 |
Connecting rod bearing clearance* | 0.006 – 0.060 mm |
| Permissible non-perpendicularity of the hole axis relative to the connecting rod axis: | |
| - head hole | 0.10 mm |
| - base hole | 0.15 mm |
* Measurements should be taken using Plastigage measuring rods.
Pistons
Installation method: The arrow on the bottom of the piston should point towards the front of the engine (towards the timing drive).
| Piston diameter, mm: | |
| – nominal size 1 | 73,910 – 73,920 |
| – nominal size 2 | 73,920 – 73,930 |
| – nominal size 3 | 73,930 – 73,940 |
| – nominal size 4 | 73,940 – 73,950 |
| - increased by 0.5 mm | 74,460 – 74,485 |
| - increased by 1.0 mm | 74,960 – 74,985 |
| Piston clearance in cylinder | 0.015 – 0.050 mm |
Piston rings
Each piston has three rings: two sealing rings and one oil scraper ring.
| Clearance of the sealing ring lock (installed in the cylinder) | 0.25 – 0.45 mm |
| Oil scraper ring lock clearance | 0.20 – 0.40 mm |
Piston pins
| Length | 63.0 – 63.8 mm |
| Diameter, mm: | |
| - marked in white | 20,622 – 20,625 |
| - marked in red | 20,625 – 20,628 |
| - marked in blue | 20,628 – 20,631 |
| - marked in yellow | 20,631 – 20,634 |
| Piston hub clearance | 0.013 – 0.045 mm |