Note: Thoroughly clean all parts to be assembled.
Apply new engine oil to all sliding and rotating surfaces before installing parts.
Replace all gaskets, o-rings and oil seals with new items.
1. Install oil jets and check valves (see section "Lubrication system").
2. Install the main bearing shells.
A) Align the protrusion of the bearing with the recess in the block and in the main bearing cap.
b) The bored bearing shell must be installed in the cylinder block.
3. Install the upper thrust half rings into the recess in the middle (3rd) main journal, and the grooves of the half rings should be oriented outward (from the neck).
4. Install the crankshaft to the cylinder block.
5. Install the main bearing caps and lower thrust washers.
A) Install the 3rd main bearing cap with the upper half rings installed in it, the grooves of which should be directed outward (from the neck).
b) Install the rest of the covers, taking into account their number and the direction of the arrows, which should be directed towards the toe of the crankshaft.
V) Apply a light coat of engine oil to the threads and under the heads of the main bearing cap bolts.
G) Install and evenly tighten the ten main bearing cap bolts in several passes in the sequence shown.
- Tightening torque - 103 Nm
d) Check up smoothness of rotation of a cranked shaft.
e) Check crankshaft end play (see relevant paragraph).
6. Install the connecting rod and piston group.
A) Cover the connecting rod bolts with short pieces of hose to protect the crankshaft from damage.
b) Using a piston ring crimper, insert the connecting rod and piston group into each cylinder, following the numbering. The piston front marking must face the front of the engine.
7. Install the connecting rod caps.
A. Place the cap on the connecting rod.
A) Align the numbered connecting rod cap with the corresponding connecting rod.
b) Reinstall the connecting rod cap so that the front side markings face the front of the engine.
B. Install the connecting rod cap nuts.
Note: The connecting rod cap nuts are tightened in two successive steps.
If any of the connecting rod bolts is broken or deformed, replace it.
A) Apply a light coat of engine oil to the threads and under the connecting rod cap nuts.
b) Install and tighten the connecting rod cap nuts alternately in several passes.
- Tightening torque - 54 Nm
If any of the connecting rod nuts does not meet torque requirements, replace the nut.
V) Mark the front side of the connecting rod cap nut with paint.
G) Further tighten the connecting rod cap nuts by turning each 90°as shown.
If new nuts are used, the pre-tightening torque is 34 Nm, then turn the nut 120°.
d) Check for a 90°misalignment of the mark with respect to the direction towards the front.
e) Check up smoothness of rotation of a cranked shaft.
and) Check the end play of the connecting rod (see page 24).
8. Install rear oil seal retainer, install new gasket and four bolt retainer.
- Tightening torque - 13 Nm