Note:
- Thoroughly clean all parts to be assembled.
- Before assembly, lubricate all parts that form rotating or friction units with fresh engine oil.
- Replace all gaskets, O-rings and seals with new ones.
1. Install the main bearing shells.
a) Align the projections of the upper bearing shells with the recesses (indentations) cylinder block beds and insert the liners.
Note: Clean the rear surface of the bearing shell and the surface of the cylinder block that contacts the shell. Do not allow oil or dirt to come into contact with these surfaces.
Note: Upper halves of liners (installed in the cylinder block bore) have oil grooves and holes, and the lower ones (installed in main bearing caps) - No.
c) Install the lower main bearing shells, aligning their protrusions with the recesses (indentations) in the main bearing cap.
Note: Clean the back side of the bearing shell and the surface of the bearing cap that contacts the shell. Do not allow oil or dirt to come into contact with these surfaces.
2. Install the upper thrust half rings into the main bearing bed with the oil grooves facing outward.
3. Apply engine oil to the surface of the main bearing shells and place the crankshaft into the cylinder block.
Note: Do not apply oil to the back surface of the bearings.
4. Install the main bearing caps.
a) Install the four main bearing caps.
Note: Each bearing cap is numbered and marked "front".
b) Apply a thin coat of engine oil to the threads and under the heads of the main bearing cap bolts.
c) Install and tighten the main bearing cap bolts evenly in several passes in the sequence shown in the figure.
- Tightening torque - 59 ±6 Nm
d) Make sure the crankshaft rotates freely.
The original can be found on this resource TOYOTAMAN
5. Place pieces of rubber hoses onto the connecting rod bolts.
e. Install the piston and connecting rod assembly.
Note:
- Apply a small amount of motor oil to the cylinder walls.
- Apply a small amount of motor oil to the piston rings.
Using a ring compressor, install the piston assemblies into the cylinders according to their numbers, with the "front" marks on the pistons facing the front of the engine.
7. Install the lower connecting rod caps. A. Install the lower caps onto the connecting rods.
a) Check that the numbering of the connecting rod bearing caps and connecting rods matches.
Note: Clean the back side of the bearing shell and the surface of the bearing cap that contacts the shell. Do not allow oil or dirt to come into contact with these surfaces.
b) Install the lower connecting rod caps so that the "front" marks face the front of the engine.
B. Tighten the bolts.
Note:
- The bolts are tightened in two stages.
- If any of the connecting rod bolts are broken or deformed, replace them.
a) Apply a coat of engine oil to the threads and under the bolt heads.
b) Tighten the connecting rod cap bolts evenly in several passes.
- Tightening torque - 36+6 Nm
If any bolt is not tightened to the specified torque, replace it.
c) Make sure the crankshaft turns freely.