Tech Tips
Check whether the engine is TMC made or not by referring to the following illustration.
| *A | for TMC Made Engine | *B | except TMC Made Engine |
| *1 | Engine Oil Level Dipstick Guide | *2 | Water Inlet Housing |
| *3 | Water Inlet Housing Drain Cock Assembly | - | - |
INSTALL RING PIN
Using a plastic hammer, tap in the ring pins.
| *a | Upper Side | *b | Lower Side |
| *c | Protrusion Height | - | - |
| Standard Protrusion | ||||||
|---|---|---|---|---|---|---|
|
INSTALL STUD BOLT (for TMC Made Engine)
Using an E5 or E7 "TORX" socket, install the stud bolts.
| *a | Front Side | *b | RH Side |
| *c | LH Side | - | - |
INSTALL STUD BOLT (except TMC Made Engine)
Using an E5 or E7 "TORX" socket, install the stud bolts.
| *a | LH Side | *b | RH Side |
INSTALL STRAIGHT PIN (for TMC Made Engine)
Using a plastic hammer, tap in the straight pins.
| *a | Front Side | *b | Lower Side |
| *c | Rear Side | *d | RH Side |
| Standard Protrusion | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
INSTALL STRAIGHT PIN (except TMC Made Engine)
Using a plastic hammer, tap in the straight pins.
| *a | Front Side | *b | Lower Side |
| *c | Rear Side | *d | RH Side |
| *e | LH Side | - | - |
| Standard Protrusion | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
INSPECT CRANKSHAFT OIL CLEARANCE
Check the crank journal and bearing for pitting and scratches.
Install the crankshaft bearing Click here.
Place the crankshaft on the cylinder block.
| *1 | Plastigage |
Lay a strip of Plastigage across each journal.
Examine the front marks and numbers and install the bearing caps on the cylinder block.
Tech Tips
A number is marked on each main bearing cap to indicate the installation position.
Install the main bearing caps Click here.
Note
Do not turn the crankshaft.
Remove the main bearing caps Click here.
| *1 | Plastigage |
| *2 | Number Mark |
Measure the Plastigage at its widest point.
| Standard oil clearance |
|---|
| 0.008 to 0.024 mm (0.000315 to 0.000945 in.) |
| Maximum oil clearance |
|---|
| 0.05 mm (0.00197 in.) |
Note
Remove the Plastigage completely after the measurement.
If the oil clearance is greater than the maximum, replace the crankshaft bearing. If necessary, replace the crankshaft.
Tech Tips
If replacing a bearing, select a new one with the same number. If the number of the bearing cannot be determined, calculate the correct bearing number by adding together the numbers imprinted on the cylinder block and crankshaft. Then select a new bearing with the calculated number. There are 4 sizes of standard bearings, marked "1", "2", "3" and "4" accordingly.
EXAMPLE: Cylinder block "3" + Crankshaft "5" = Total number 8 (Use bearing "3")
| Cylinder block + Crankshaft | 0 to 2 | 3 to 5 | 6 to 8 | 9 to 11 |
| Bearing to be used | "1" | "2" | "3" | "4" |
| Standard Cylinder Block Journal Bore Diameter | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Crankshaft Journal Diameter | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Bearing Center Wall Thickness | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
INSTALL NO. 1 OIL NOZZLE SUB-ASSEMBLY
Using a 5 mm hexagon wrench, install the oil nozzles with the bolts.
INSTALL PISTON
Using a screwdriver, install a new snap ring at one end of the piston pin hole.
Tech Tips
Make sure that the end gap on 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).
for 2-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | Front Mark |
Align the front marks on the piston and connecting rod, and push in the piston with a thumb.
for 3-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | Front Mark |
Align the front marks on the piston and connecting rod, and push in the piston with a thumb.
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 on 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 |
| *2 | Oil Ring (Expander) |
Install the oil ring expander and oil ring rail by hand.
Note
Install the expander and oil ring so that their ring ends are at opposite sides.
Securely install the expander into 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.
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 | Press around the circumference | *2 | Paint (Purple or White) |
| *3 | Ring End | *4 | Correct |
| *5 | Incorrect (Ends of the oil ring expander are overlapping) | - | - |
| *1 | Piston Ring Expander |
| *a | Paint Mark |
| *b | Code Mark |
|
Upward |
Using a piston ring expander, install the 2 compression rings so that the paint marks are positioned as shown in the illustration.
Note
Install the No. 2 compression ring with the code mark (2N or 2A) facing upward.
for 2-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | No. 1 and Oil Ring Rail |
| *2 | No. 2 and Oil Ring Expander |
| *3 | Front Mark |
Position the piston rings so that the ring ends are as shown in the illustration.
for 3-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | Lower Side Rail |
| *2 | No. 2 Compression Ring |
| *3 | Upper Side Rail |
| *4 | No. 1 Compression Ring and Oil Ring Expander |
| *5 | Front Mark |
Position the piston rings so that the ring ends are as shown in the illustration.
INSTALL CRANKSHAFT BEARING
Install the upper bearing with an oil groove on the cylinder block.
Note
Do not apply engine oil to the bearing inner surface or bearing cap contact surfaces.
INSTALL NO. 2 CRANKSHAFT BEARING
| *1 | Claw |
Install the No. 2 crankshaft bearing on the bearing cap.
Note
Clean the backside of the bearing and the bearing surface of the crankshaft. The surface should be free of dust and oil.
INSTALL UPPER CRANKSHAFT THRUST WASHER
| *1 | Oil Groove |
Install the 2 thrust washers under the No. 3 journal of the cylinder block with the oil grooves facing outward.
Note
Make sure to install the proper thrust washers.
Apply engine oil to the crankshaft thrust washers.
INSTALL CRANKSHAFT
Apply engine oil to the upper bearings and place the crankshaft on the cylinder block.
Apply engine oil to the lower bearings.
| *1 | Front Mark and Number |
Examine the front marks and install the bearing caps on the cylinder block.
Apply a light coat of engine oil to the threads and under the bearing cap bolts.
Install the crankshaft bearing cap bolts.
Note
The main bearing cap bolts are tightened in 2 progressive steps.
Step 1
Retighten the 10 main bearing cap bolts in the sequence shown in the illustration.
Step 2
| *1 | Paint Mark |
|
Engine Front |
Mark the front of the bearing cap bolts with paint.
Retighten the bearing cap bolts 90° in the numerical order shown in the illustration.
Check that the paint mark is now at a 90° angle to the front.
Check that the crankshaft turns smoothly.
Check the crankshaft thrust clearance Click here.
INSTALL CONNECTING ROD BEARING
| *1 | Claw |
Align the bearing claw with the groove on the connecting rod or connecting cap.
Note
Clean the backside of the bearing and the bearing surface of the connecting rod. The surface should be free of dust and oil.
INSTALL PISTON SUB-ASSEMBLY WITH CONNECTING ROD
Note
The connecting rod cap bolts are tightened in 2 progressive steps.
Apply engine oil to the cylinder walls, pistons, and surfaces of connecting rod bearings.
for 2-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | No. 1 and Oil Ring Rail |
| *2 | No. 2 and Oil Ring Expander |
| *3 | Front Mark |
Check the position of the piston ring ends.
for 3-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | Lower Side Rail |
| *2 | No. 2 Compression Ring |
| *3 | Upper Side Rail |
| *4 | No. 1 Compression Ring and Oil Ring Expander |
| *5 | Front Mark |
Check the position of the piston ring ends.
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.
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 | Press around the circumference | *2 | Paint (Purple or White) |
| *3 | Ring End | *4 | Correct |
| *5 | Incorrect (Ends of the oil ring expander are overlapping) | - | - |
for 2-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | Front Mark |
|
Front |
Using a piston ring compressor, push the correctly numbered piston and connecting rod assemblies into each cylinder with the front mark of the piston facing forward.
Note
Match the numbered connecting rod cap with the connecting rod.
for 3-piece Type:
| *A | for TMC Made Engine |
| *B | except TMC Made Engine |
| *1 | Front Mark |
|
Front |
Using a piston ring compressor, push the correctly numbered piston and connecting rod assemblies into each cylinder with the front mark of the piston facing forward.
Note
Match the numbered connecting rod cap with the connecting rod.
Check that the protrusion on 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 cap bolts.
Install the connecting rod cap bolts.
Note
The connecting rod cap bolts should be tightened in 2 progressive steps.
Step 1
Install and alternately tighten the bolts of the connecting rod cap in several steps.
Step 2
| *1 | Paint Mark |
|
Engine Front |
Mark the front of the connecting rod cap bolts with paint.
Retighten the cap bolts 90° as shown in the illustration.
Check that the crankshaft turns smoothly.
Check the connecting rod thrust clearance Click here.