Reassembly [09/2014 - 11/2017]: Procedure

WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL NO. 1 OIL NOZZLE SUB-ASSEMBLY
1. Using a 5 mm hexagon wrench, install the 3 No. 1 oil nozzle sub-assemblies with the 3 bolts.
  Torque: 9.0 N.m (92 kgf/cm, 80 in.lbf)

INSTALL CONNECTING ROD SMALL END BUSH

Align the oil holes of a new connecting rod small end bush and the connecting rod sub-assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Oil Hole

Using SST and a press, install the connecting rod small end bush.

SST: 09222-30010

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Using a pin hole grinder, hone the bush to obtain the specified clearance between the connecting rod small end bush and piston pin.

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Standard Oil Clearance

-0.002 to 0.004 mm (-0.0000787 to 0.000157 in.)

Check that the piston pin fits at normal room temperature.
Coat the piston pin with engine oil, and push it into the connecting rod with your thumb.

INSTALL PISTON SUB-ASSEMBLY WITH PIN

Using a screwdriver, install a new piston pin hole snap ring at one end of the piston pin hole.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Cutout

HINT:

Confirm that the end gap of the piston pin hole snap ring is not aligned with the pin hole cutout of the piston.

Gradually heat the piston to approximately 80°C (176°F).
WARNING:
Be sure to wear protective gloves
Coat the piston pin with engine oil.

Align the front marks of the piston and connecting rod, and push in the piston pin with your thumb.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	for Bank 1
*b	for Bank 2
*c	Front Mark

HINT:

The piston and piston pin are a matched set.

Check the fitting condition between the piston and piston pin by trying to move the piston back and forth on the piston pin.

Using a screwdriver, install a new piston pin hole snap ring at the other end of the piston pin hole.

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Cutout

HINT:

Confirm that the end gap of the piston pin hole snap ring is not aligned with the pin hole cutout portion of the piston.

Check that the piston moves smoothly.

INSTALL PISTON RING SET

Install the oil ring expander by hand.

Using a piston ring expander, install the oil ring as shown in the illustration.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Oil Ring	*2	Oil Ring Expander
*a	for Bank 1	*b	for Bank 2
*c	Front Mark	*d	Oil Ring End
*e	Oil Ring Expander End	-	-
	Engine Front	-	-

Using a piston ring expander, install the No. 2 compression ring and No. 1 compression ring so that the painted marks are positioned as shown in the illustration.

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*1	No. 1 Compression Ring
*2	No. 2 Compression Ring
*a	Code Mark

HINT:

Install the No. 1 compression ring with the code mark (1N) facing upward.
Install the No. 2 compression ring with the code mark (2N) facing upward.

Position the No. 1 compression ring and No. 2 compression ring so that the ring ends are as shown in the illustration.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	for Bank 1
*b	for Bank 2
*c	Front Mark
*d	No. 1 Compression Ring End
*e	No. 2 Compression Ring End
	Engine Front

NOTE:

Do not align the ring ends.

INSTALL CRANKSHAFT BEARING

Clean the main journal and both surfaces of the crankshaft bearings.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	No. 1 Journal Bearing and No. 4 Journal Bearing
*2	No. 2 Journal Bearing and No. 3 Journal Bearing
*a	21 mm (0.827 in.)
*b	18 mm (0.709 in.)

NOTE:

Crankshaft bearings come in widths of 18.0 mm (0.709 in.) and 21.0 mm (0.827 in.). Install the 21.0 mm (0.827 in.) crankshaft bearings in the No. 1 and No. 4 cylinder block journal positions with the crankshaft bearing cap. Install the 18.0 mm (0.709 in.) crankshaft bearings in the No. 2 and No. 3 cylinder block journal positions with the crankshaft bearing cap.

Install the upper crankshaft bearing.

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*a	Correct
*b	Incorrect
*c	Oil Groove
*d	Oil Feed Hole

Install the upper crankshaft bearings to the cylinder block sub-assembly as shown in the illustration.
NOTE:
- Do not apply engine oil to the crankshaft bearings or the contact surfaces.
- Both sides of the oil groove in the cylinder block sub-assembly should be visible through the oil feed holes in the crankshaft bearing. The amount visible on each side of the holes should be equal.
- Do not allow coolant to come into contact with the crankshaft bearing inner surface.
- If any coolant comes into contact with the crankshaft bearing inner surface, replace the crankshaft bearing with a new one.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Journal Number
*b	Vernier Caliper

Install the lower crankshaft bearing.

Install the lower crankshaft bearings to the crankshaft bearing caps.
Using a vernier caliper, measure the distance between the crankshaft bearing cap edge and the lower crankshaft bearing edge.
Difference between (A) and (B)

0 to 0.7 mm (0 to 0.0276 in.)
NOTE:
- Do not apply engine oil to the crankshaft bearings or the contact surfaces.
- Do not allow coolant to come into contact with the crankshaft bearing inner surface.
- If any coolant comes into contact with the crankshaft bearing inner surface, replace the crankshaft bearing with a new one.

INSTALL CRANKSHAFT THRUST WASHER SET

Apply engine oil to the crankshaft thrust washer set.

Install the crankshaft thrust washer set to the No. 2 journal position of the cylinder block sub-assembly with the oil grooves facing outward.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Oil Groove

NOTE:

Be sure not to install the crankshaft thrust washer set the wrong way around.

INSTALL CRANKSHAFT

Apply engine oil to the upper crankshaft bearing, and then place the crankshaft on the cylinder block sub-assembly.
Apply engine oil to the lower crankshaft bearing.

Confirm the projections and numbers on the crankshaft bearing caps and install the crankshaft bearing caps on the cylinder block sub-assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Projection
*b	Number Mark

HINT:

A number is marked on each crankshaft bearing cap to indicate the installation position.

Apply a light coat of engine oil to the threads and under the heads of the crankshaft bearing cap set bolts.
Temporarily install the 8 crankshaft bearing cap set bolts to the inside positions.
NOTE:
Confirm the length of the crankshaft bearing cap set bolts before installing them.

Bolt Length

100 to 102 mm (3.94 to 4.02 in.)

Insert the crankshaft bearing cap by hand until the clearance between the crankshaft bearing cap and the cylinder block sub-assembly is less than 6 mm (0.236 in.).

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Less than 6 mm (0.236 in.)
*b	Bolt Length

HINT:

Place paint marks on the inside camshaft bearing cap set bolts indicating the required clearance and use them as a guide.

Using a plastic hammer, lightly tap the crankshaft bearing cap to ensure a proper fit.

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Apply a light coat of engine oil to the threads and under the heads of the 8 crankshaft bearing cap set bolts.

Install the 8 crankshaft bearing cap set bolts to the outside positions.

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*a	Bolt Length

NOTE:

Confirm the length of the crankshaft bearing cap set bolts before installing them.

Bolt Length

Item	Specified Condition
Bolt (A)	100 to 102 mm (3.94 to 4.02 in.)
Except bolt (A)	105.5 to 107.5 mm (4.15 to 4.23 in.)

Tighten the crankshaft bearing cap set bolts.
HINT:

The crankshaft bearing cap set bolts are tightened in 2 progressive steps.
Step 1:
1. Uniformly tighten the 16 crankshaft bearing cap set bolts in several steps in the order shown in the illustration.
  Torque: 61 N.m (622 kgf/cm, 45 ft.lbf)
  
  NOTE:
  Check that the crankshaft turns smoothly during the procedure.
  
  Fig 1: Crankshaft Bearing Cap Set Bolts Loosening Sequence
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  If any of the crankshaft bearing cap set bolts cannot be tightened to the specified torque, replace it.

Step 2:

Mark the front of the crankshaft bearing cap set bolts with paint.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Paint Mark
*b	90°
	Engine Front

Tighten the crankshaft bearing cap set bolts another 90°.
Check that the painted marks are now at a 90° angle to the front of the engine.

Install 8 new seal washers and uniformly tighten the 8 bolts in several steps in the order shown in the illustration.

Torque: 25.7 N.m (262 kgf/cm, 19 ft.lbf)

NOTE:

Check that the crankshaft turns smoothly during the procedure.
Confirm the length of the crankshaft bearing cap set bolts before installing them.

Bolt Length

Item	Specified Condition
Bolt (A)	45 mm (1.77 in.)
Except bolt (A)	30 mm (1.18 in.)

Fig 2: Crankshaft Bearing Cap Set Bolts Tightening Sequence

Check that the crankshaft turns smoothly.
Check the crankshaft thrust clearance.
See step 5

INSTALL CONNECTING ROD BEARING

Clean the connecting rod, connecting rod cap and connecting rod bearings.
Install the connecting rod bearings to the connecting rod and connecting rod cap.

Using a vernier caliper, measure the distance between each connecting rod bearing edge and the connecting rod edges, and the connecting rod cap edges respectively.

Difference between (A) and (B)

0 to 0.7 mm (0 to 0.0276 in.)

*a	Vernier Caliper

NOTE:

Do not apply engine oil to the connecting rod bearings or the connecting rod contact surfaces.
Do not allow coolant to come into contact with the connecting rod bearing inner surface.
If any coolant comes into contact with the connecting rod bearing inner surface, replace the connecting rod bearing with a new one.

INSTALL PISTON SUB-ASSEMBLY WITH CONNECTING ROD

Apply engine oil to the cylinder walls, the pistons, and the surfaces of the connecting rod bearings.

Position the piston rings so that the ring ends are as shown in the illustration.

*a	for Bank 1
*b	for Bank 2
*c	Front Mark
*d	Oil Ring End
*e	No. 1 Compression Ring End
*f	Oil Ring Expander End
*g	No. 2 Compression Ring End
	Engine Front

NOTE:

Do not align the ring ends.

Using a piston ring compressor, push the correctly matched piston sub-assembly with connecting rod into the cylinder with the front mark of the piston facing the front of the engine.

*a	for Bank 2
*b	for Bank 1
*c	Front Mark
	Engine Front

NOTE:

Match the connecting rod cap with the connecting rod.

Check that the front mark of the connecting rod cap is facing the front of the engine.

*a	Front Mark
	Engine Front

Apply a light coat of engine oil to the threads and under the heads of the connecting rod bolts.
Install the connecting rod bolts.
HINT:

The connecting rod bolts are tightened in 2 progressive steps.

Step 1:

Install and uniformly tighten the connecting rod bolts of each connecting rod cap in several steps.

Torque: 40 N.m (408 kgf/cm, 30 ft.lbf)

NOTE:

Check that the crankshaft turns smoothly during the procedure.

Mark the front side of each connecting rod bolt with paint.

*a	Paint Mark
*b	90°
	Engine Front

Step 2:
1. Tighten the connecting rod bolts 90°.
Check that the paint marks are now at a 90° angle to the front of the engine.
Check that the crankshaft turns smoothly.

INSPECT CONNECTING ROD THRUST CLEARANCE
See step 1