Crankshaft Installation
| ITEM | DESCRIPTION |
|---|---|
| 1 | Cross bolt with sealing washers - Crankshaft main bearing cap (quantity 10) |
| 2 | Front main bearing cap |
| 3 | Outer main bearing cap bolt (quantity 10) |
| 4 | Inner main bearing cap bolt (quantity 10) |
| 5 | Identification mark - Must face front of engine |
| 6 | Main bearing caps (quantity 3) |
| 7 | Rear main bearing cap |
The main bearing caps are made from cast iron and are cross bolted to increase rigidity. An identification mark on each bearing cap must face the front of the engine.
There are 5 grades of main bearing available, each being color coded. Journal sizes are marked on the rear of the crankshaft.
The thickness grade of all main bearing shells are to be selected to give a total running clearance of:
- Not less than 0.046 mm (0.0018 in)
- Not greater than 0.067 mm (0.0026 in).
The main bearing shells in the cylinder block have a central hole and an internal groove to allow for main journal lubrication. The bearing shells in the main bearing caps are plain with no grooves.
Special tools are required to make sure the correct alignment of the upper and lower main bearing shells.
The crankshaft seals are located in the front and rear covers.