PROCEDURE
INSTALL STUD BOLT
Note
If a stud bolt is deformed or the threads are damaged, replace it.
Tech Tips
There are 2 installation types for the No. 1 ventilation case.
This procedure is for type A.
| *a | LH Side |
Using an E6 "TORX" socket, install the stud bolts as shown in the illustration.
INSTALL NO. 1 OIL NOZZLE SUB-ASSEMBLY
Using a 5 mm socket hexagon wrench, install the 4 No. 1 oil nozzle sub-assembly with the 4 bolts.
INSTALL PISTON
| *a | Cutout |
Using a screwdriver, install a new snap ring at one end of the piston pin hole.
Tech Tips
Make sure that the end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.
Gradually heat the piston to approximately 80 to 90°C (176 to 194°F).
| *a | Front Mark |
Align the front marks of the piston and connecting rod, insert the connecting rod into the piston, and then push in the piston pin with your thumb until the pin comes into contact with the snap ring.
Tech Tips
The piston and piston pin are a matched set.
Using a screwdriver, install a new snap ring on the other end of the piston pin hole.
Tech Tips
Make sure that the end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.
Check the fitting condition between the piston and piston pin by trying to move the piston back and forth on the piston pin.
INSTALL PISTON RING SET
for 2-piece Type:
| *1 | Oil Ring Expander |
| *2 | Oil Ring |
| *a | Coil Joint |
| *b | Oil Ring End |
Install the oil ring expander and oil ring by hand.
Note
Install the oil ring expander and oil ring so that their ring ends are at opposite sides.
Securely install the oil ring expander to the inner groove of the oil ring.
for 3-piece Type:
| *1 | Upper Side Rail |
| *2 | Oil Ring Expander |
| *3 | Lower Side Rail |
Install the oil ring expander and 2 side rails by hand.
Note
When installing the upper side rail and lower side rail, the ends of the oil ring expander may overlap. If it occurs, the upper side rail or lower side rail may move out of its groove.
Check that the ends of the oil ring expander are not overlapping and that the upper side rail and lower side rail are securely installed into the groove.
| *a | Press around the circumference | *b | Ring End |
| *c | Correct | *d | Incorrect (Ends of the oil ring expander are overlapping) |
Note
After installing the oil ring expander, upper side rail and lower side rail, press around the circumference with a finger to check that they are securely installed into the groove.
If the oil ring expander is not securely installed into the groove, check that the ends of the oil ring expander are not overlapping.
If the ends of the oil ring expander are overlapping, remove the upper side rail and lower side rail and realign the oil ring expander using a screwdriver.
| *1 | No. 1 Compression Ring |
| *2 | No. 2 Compression Ring |
| *3 | Piston Ring Expander |
| *a | Code Mark (1R) |
| *b | Code Mark (2R) |
| *c | Paint Mark |
|
Upward |
Using a piston ring expander, install the No. 1 compression ring and No. 2 compression ring so that the paint marks are positioned as shown in the illustration.
Note
Install the No. 1 compression ring with the code mark (1R) facing upward.
Install the No. 2 compression ring with the code mark (2R) facing upward.
Paint marks can only be checked on new piston rings. When reusing piston rings, check each piston ring profile in order to install them into the correct positions.
for 2-piece Type:
| *a | No. 1 Compression Ring and Oil Ring |
| *b | No. 2 Compression Ring and Oil Ring Expander |
|
Engine Front |
Position the piston rings so that the ring ends are as shown in the illustration.
for 3-piece Type:
| *1 | No. 1 compression ring and Oil Ring Expander |
| *2 | No. 2 compression ring |
| *3 | Upper Side Rail |
| *4 | Lower Side Rail |
| *a | Engine Front |
Position the piston rings so that the ring ends are as shown in the illustration.
INSTALL CRANKSHAFT BEARING
| *a | Vernier Caliper |
Install the upper crankshaft bearing (except No. 3 journal).
Install the upper crankshaft bearing to the cylinder block sub-assembly.
Tech Tips
Both sides of the oil groove in the cylinder block should be visible through the oil feed holes in the bearing. The amount visible on each side of the holes should be equal.
Using a vernier caliper, measure the distance between the cylinder block edge and the upper crankshaft bearing edge.
| Standard Dimension (A) |
|---|
| 0.5 to 1.0 mm (0.0197 to 0.0394 in.) |
Note
Do not apply engine oil to the bearings or the contact surfaces.
| *a | Vernier Caliper |
Install the upper crankshaft bearing (for No. 3 journal).
Install the upper crankshaft bearing to the cylinder block sub-assembly.
Tech Tips
Both sides of the oil groove in the cylinder block should be visible through the oil feed holes in the bearing. The amount visible on each side of the holes should be equal.
Using a vernier caliper, measure the distance between the cylinder block edge and the upper crankshaft bearing edge.
| Standard Dimension (A - B) |
|---|
| 0.7 mm (0.0276 in.) or less |
Note
Do not apply engine oil to the bearing or the contact surfaces.
Install the lower crankshaft bearing.
Install the lower crankshaft bearing to the cylinder block sub-assembly.
Tech Tips
Both sides of the oil groove in the cylinder block sub-assembly should be visible through the oil feed holes in the bearing. The amount visible on each side of the holes should be equal.
| *a | Mark 1, 2, 3, 4 or 5 |
| *b | Vernier Caliper |
Using a vernier caliper, measure the distance between the bearing cap edge and the lower bearing edge.
| Standard Dimension (A - B) |
|---|
| 0.7 mm (0.0276 in.) or less |
Note
Do not apply engine oil to the bearings or the contact surfaces.
INSTALL UPPER CRANKSHAFT THRUST WASHER
| *a | Oil Groove |
Install the 2 thrust washers to the No. 3 journal position of the cylinder block sub-assembly with the oil grooves facing outward.
Apply engine oil to the crankshaft thrust washers.
INSTALL CRANKSHAFT
Apply engine oil to the upper crankshaft bearings and install the crankshaft to the cylinder block sub-assembly.
Apply engine oil to the lower crankshaft bearings.
| *a | Number Mark |
|
Engine Front |
Examine the number marks and install the crankshaft bearing caps to the cylinder block sub-assembly.
Apply a light coat of engine oil to the threads and under the heads of the crankshaft bearing cap bolts.
Temporarily install the 10 crankshaft bearing cap set bolts.
| *a | Less than 5 mm |
Push on the crankshaft bearing cap with your hand until the clearance between the crankshaft bearing cap and cylinder block sub-assembly is less than 5 mm (0.197 in.).
Using a plastic hammer, lightly tap the bearing cap to ensure a proper fit.
Install the crankshaft bearing cap set bolts.
Note
The crankshaft bearing cap set bolts are tightened in 2 progressive steps.
Step 1:
Install and uniformly tighten the 10 crankshaft bearing cap set bolts in the order shown in the illustration.
Step 2:
| *a | Paint Mark |
|
Engine Front |
Mark the front of the crankshaft bearing cap set bolts with paint.
Tighten the crankshaft bearing cap set bolts 90° in the order shown in step 1.
Check that the paint marks are now at a 90° angle to the front.
Check that the crankshaft turns smoothly.
Check the crankshaft thrust clearance.
INSTALL CONNECTING ROD BEARING
Install the connecting rod bearings to the connecting rod and connecting rod cap.
| *a | Vernier Caliper |
Using a vernier caliper, measure the distance between the edges of the connecting rod and connecting cap bearing, and the connecting rod cap and the connecting rod bearing.
| Standard Dimension A - B or B - A |
|---|
| 0 to 0.7 mm (0 to 0.0276 in.) |
Note
Do not apply engine oil to the bearings or the contact surfaces.
INSTALL PISTON SUB-ASSEMBLY WITH CONNECTING ROD
Apply engine oil to the cylinder walls, pistons, and the surfaces of the connecting rod bearings.
for 2-piece Type:
| *a | No. 1 Compression Ring and Oil Ring |
| *b | No. 2 Compression Ring and Oil Ring Expander |
|
Engine Front |
Position the piston rings so that the ring ends are as shown in the illustration.
Note
Do not align the ring ends.
for 3-piece Type:
| *1 | No. 1 compression ring and Oil Ring Expander |
| *2 | No. 2 compression ring |
| *3 | Upper Side Rail |
| *4 | Lower Side Rail |
| *a | Engine Front |
Position the piston rings so that the ring ends are as shown in the illustration.
Confirm that the ends of the oil ring expander are not overlapping and that the upper side rail and lower side rail are securely installed into the groove.
| *a | Press around the circumference | *b | Ring End |
| *c | Correct | *d | Incorrect (Ends of the oil ring expander are overlapping) |
Note
After installing the oil ring expander, upper side rail and lower side rail, press around the circumference with a finger to check that they are securely installed into the groove.
If the oil ring expander is not securely installed into the groove, check that the ends of the oil ring expander are not overlapping.
If the ends of the oil ring expander are overlapping, remove the upper side rail and lower side rail and realign the oil ring expander using a screwdriver.
| *a | Front Mark |
Using a piston ring compressor, push the correctly numbered piston and connecting rod into the cylinder with the front mark of the piston facing forward.
Note
When inserting the piston with connecting rod, do not allow it to make contact with the No. 1 oil nozzle sub-assembly.
Match the numbered connecting rod cap with the connecting rod.
| *a | Front Mark |
Check that the front mark of the connecting rod cap is facing in the correct direction.
Apply a light coat of engine oil to the threads and under the heads of the connecting rod bolts.
Install the connecting rod bolts.
Note
The connecting rod bolts should be tightened in 2 progressive steps.
Step 1:
Using SST, install and alternately tighten the connecting rod bolts in several steps.
Step 2:
| *a | Paint Mark |
|
Engine Front |
Mark the front of the connecting rod bolts with paint.
Tighten the bolts 90° as shown in the illustration.
Check that the crankshaft turns smoothly.
Check the connecting rod thrust clearance.
INSTALL NO. 1 VENTLATION CASE
Tech Tips
There are 2 installation types for the No. 1 ventilation case.
Depending on the installation type, the number of bolts, nuts and stud bolts used will vary.
| *a | Seal Packing |
| *b | Seal Packing Diameter |
Apply seal packing in a continuous line as shown in the illustration.
| Seal Packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Application Specification | ||||
|---|---|---|---|---|
|
Note
Remove any oil from the contact surfaces.
Install the No. 1 ventilation case within 3 minutes and tighten the bolts and nuts within 15 minutes of applying seal packing.
Do not start the engine for at least 2 hours after installation.
Type A:
Install the No. 1 ventilation case with the 6 bolts and 2 nuts.
Type B:
Install the No. 1 ventilation case with the 8 bolts.