Disassembly [01/2019 - 09/2022]: Procedure

1. Remove the oil filler cap sub-assembly from the cylinder head cover sub-assembly.

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1. Using a screwdriver with its tip wrapped with protective tape, remove the oil filler cap gasket from the oil filler cap sub-assembly.

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   *a	Protective Tape

Refer to PROCEDURE - Step 2

Refer to PROCEDURE - Step 1

Refer to PROCEDURE - Step 1

1. Remove the 16 bolts and cylinder head cover sub-assembly from the camshaft housing sub-assembly.

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2. Remove the 2 gaskets from the camshaft bearing cap.
   NOTE:

   As the gaskets may stick to the cylinder head cover sub-assembly, be careful not to drop any of the gaskets into the engine when removing the cylinder head cover sub-assembly.

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1. Remove the 3 cylinder head cover gaskets from the cylinder head cover sub-assembly.

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1. Using a screwdriver as shown in the illustration, deform each spark plug tube gasket inwards and remove the 4 spark plug tube gaskets from the cylinder head cover sub-assembly.

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   *a	Protective Tape

1. Turn the crankshaft pulley until its timing notch is aligned with timing mark "0" of the timing chain cover sub-assembly.

   HINT: 

   There are 3 marks on the camshaft timing sprocket. Make sure that the timing mark (rectangle) is at the top.

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   *a	Timing Mark
   *b	Timing Notch
   *c	Timing Mark (Rectangle)
   *d	Mark (Circle)

2. Check that the timing marks on both the camshaft timing sprocket and camshaft timing gear assembly are facing upward as shown in the illustration.

   HINT: 

   If not, turn the crankshaft 1 complete revolution (360°) and align the timing marks as shown in the illustration.

Refer to PROCEDURE - Step 5

1. Remove the 2 nuts, bracket, No. 1 chain tensioner assembly and gasket from the timing chain cover sub-assembly.
   NOTE:

   Do not turn the crankshaft without the No. 1 chain tensioner assembly installed.

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Refer to PROCEDURE - Step 2

Refer to PROCEDURE - Step 1

1. Remove the No. 1 taper screw plug.

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Refer to PROCEDURE - Step 2

Refer to PROCEDURE - Step 3 [01/2019 - 06/2021] , or refer to PROCEDURE - Step 3 [06/2021 - 09/2022]

1. Using a 12 mm hexagon socket wrench, remove the oil filter union from the oil filter bracket.

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Refer to PROCEDURE - Step 12

Refer to PROCEDURE - Step 6

1. Remove the 3 bolts and engine mounting bracket RH from the timing chain cover sub-assembly.

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2. Remove the 4 bolts and oil filter bracket from the timing chain cover sub-assembly.

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3. Remove the 2 oil filter bracket O-rings from the timing chain cover sub-assembly.

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4. Remove the 18 bolts and seal washer from the timing chain cover sub-assembly.

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   *1	Seal Washer

5. Remove the timing chain cover sub-assembly by prying between the timing chain cover sub-assembly and cylinder head sub-assembly, camshaft housing sub-assembly, cylinder block sub-assembly and stiffening crankcase assembly with a screwdriver with its tip wrapped with protective tape.
   NOTE:

   Be careful not to damage the contact surfaces of the cylinder head sub-assembly, camshaft housing sub-assembly, cylinder block sub-assembly, stiffening crankcase assembly and timing chain cover sub-assembly.

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   *a	Protective Tape

6. Remove the 3 O-rings from the cylinder head sub-assembly and cylinder block sub-assembly.

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7. Remove the 3 bolts and engine water pump assembly from the timing chain cover sub-assembly.

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8. Remove the gasket from the engine water pump assembly.

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1. Using a 10 mm hexagon socket wrench, remove the 2 oil filter bracket with head straight screw plugs and 2 gaskets from the oil filter bracket.

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1. Remove the chain tensioner slipper from the cylinder block sub-assembly.

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1. Remove the 2 bolts and No. 1 chain vibration damper from the cylinder block sub-assembly and cylinder head sub-assembly.

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1. Remove the 2 bolts and No. 2 chain vibration damper from the camshaft housing sub-assembly.

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Refer to PROCEDURE - Step 31 [01/2019 - 04/2020] , or refer to PROCEDURE - Step 31 [04/2020 - 09/2022]

1. Remove the crankshaft timing sprocket from the crankshaft.

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1. Temporarily install the crankshaft pulley with the crankshaft pulley set bolt.
2. Using SST, hold the crankshaft pulley. Then remove the oil pump drive shaft gear nut.
   • SST: 09213-58014 
     1. 91551-80840
   • SST: 09330-00021 

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3. Remove SST, the crankshaft pulley set bolt and crankshaft pulley.
4. Remove the bolt, chain tensioner plate and chain damper spring.

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   *1	Chain Tensioner Plate
   *2	Chain Damper Spring

5. Remove the oil pump drive gear, oil pump drive shaft gear and No. 2 chain sub-assembly.

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   *1	No. 2 Chain Sub-assembly
   *2	Oil Pump Drive Gear
   *3	Oil Pump Drive Shaft Gear

1. Remove the No. 1 crankshaft position sensor plate from the crankshaft.

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1. Using a screwdriver with its tip wrapped with protective tape, remove the 2 crankshaft timing gear keys from the crankshaft.

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   *a	Protective Tape

1. Check the lock of the camshaft timing gear assembly.
2. After cleaning the VVT oil hole in the intake side of the No. 1 camshaft bearing cap, completely seal the oil hole with adhesive tape or equivalent as shown in the illustration to prevent air from leaking.
   NOTE:

   Be sure to cover the oil hole completely because air leaks due to insufficient sealing will prevent the lock pin from being released.

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   *a	Adhesive Tape Sealing Area
   *b	Prick a hole
   *c	Adhesive Tape

3. Prick a hole in the tape covering the oil hole as shown in the illustration. (Procedure A)
4. Apply approximately 150 kPa (1.5 kgf/cm ² , 22 psi) of air pressure to the hole pricked in procedure A to release the lock pin.

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   NOTE:

   • If air leaks out, reattach the adhesive tape.
   • Cover the oil hole with a piece of cloth when applying air pressure to prevent oil from spraying.
5. Forcibly turn the camshaft timing gear assembly in the advance direction (counterclockwise).

   HINT: 

   Depending on the air pressure applied, the camshaft timing gear assembly may turn in the advance direction without assistance.

6. Turn the camshaft timing gear assembly within its movable range (30 to 32°) 2 or 3 times without turning it to the most retarded position. Make sure that the camshaft timing gear assembly turns smoothly.

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   NOTE:

   • Do not lock the camshaft timing gear assembly.
   • If camshaft timing gear assembly is locked, release the lock pin again.
7. Remove the adhesive tape from the No. 1 camshaft bearing cap.

1. Using a wrench to hold the hexagonal portion of the camshaft, remove the bolt and camshaft timing gear assembly.

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   NOTE:

   • Before removing the camshaft timing gear assembly, make sure that the lock pin has been released.
   • Be sure not to remove the other 4 bolts.
   • Keep the camshaft timing gear assembly horizontal while removing it from the camshaft.

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   *a	Do Not Remove

1. Using a wrench to hold the hexagonal portion of the No. 2 camshaft, remove the bolt and camshaft timing sprocket.

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1. Uniformly loosen and remove the 10 bolts in the order shown in the illustration.
   Fig 1: Camshaft Bearing Cap Bolts Loosening Sequence

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2. Uniformly loosen and remove the 15 bolts in the order shown in the illustration.
   NOTE:

   Make sure that the camshaft and No. 2 camshaft remain level while uniformly loosening the bolts.

   Fig 2: Camshaft Bearing Cap Bolts Loosening Sequence

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3. Remove the 5 camshaft bearing caps.

   HINT: 

   Arrange the removed parts in such a way that they can be reinstalled to their original locations.

1. Remove the camshaft from the camshaft housing sub-assembly.

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Refer to PROCEDURE - Step 26

1. Remove the 16 No. 1 valve rocker arm sub-assemblies from the cylinder head sub-assembly.

   HINT: 

   Arrange the removed parts in such a way that they can be reinstalled to their original locations.

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1. Remove the 16 valve lash adjuster assemblies from the cylinder head sub-assembly.

   HINT: 

   Arrange the removed parts in such a way that they can be reinstalled to their original locations.

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1. Remove the 16 valve stem caps from the cylinder head sub-assembly.

   HINT: 

   Arrange the removed parts in such a way that they can be reinstalled to their original locations.

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1. Remove the oil control valve filter from the No. 1 camshaft bearing cap.

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1. Remove the 2 No. 1 camshaft bearings from the No. 1 camshaft bearing cap.

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1. Remove the 2 No. 2 camshaft bearings from the camshaft housing sub-assembly.

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1. Remove the 2 bolts from the camshaft housing sub-assembly.

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2. Remove the camshaft housing sub-assembly by prying between the cylinder head sub-assembly and camshaft housing sub-assembly with a screwdriver with its tip wrapped with protective tape.
   NOTE:

   Be careful not to damage the contact surfaces of the cylinder head sub-assembly and camshaft housing sub-assembly.

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   *a	Protective Tape

1. Using a 10 mm bi-hexagon socket wrench, uniformly loosen and remove the 10 cylinder head set bolts and 10 cylinder head set plate washers in several steps in the order shown in the illustration.
   NOTE:

   • Do not drop the cylinder head set plate washers into the cylinder head sub-assembly.
   • Removing the cylinder head set bolts in the incorrect order may cause warpage or cracking of the cylinder head sub-assembly.

   HINT: 

   Arrange the removed parts in such a way that they can be reinstalled to their original locations.

   Fig 3: Cylinder Head Sub-Assembly Bolts Tightening Sequence

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2. Remove the cylinder head sub-assembly from the cylinder block sub-assembly.

Refer to PROCEDURE - Step 43 [01/2019 - 04/2020] , or refer to PROCEDURE - Step 43 [04/2020 - 09/2022]

Refer to PROCEDURE - Step 3

1. Remove the oil pan drain plug and gasket from the No. 2 oil pan sub-assembly.

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1. Remove the 10 bolts and 2 nuts from the No. 2 oil pan sub-assembly.

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   *a

   Nut

2. Insert the blade of an oil pan seal cutter between the stiffening crankcase assembly and No. 2 oil pan sub-assembly. Cut through the applied sealer and remove the No. 2 oil pan sub-assembly.

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   NOTE:

   • Be careful not to damage the surface of the No. 2 oil pan sub-assembly which contacts the stiffening crankcase assembly.
   • Be careful not to damage the flange of the stiffening crankcase assembly.

Refer to PROCEDURE - Step 4

Refer to PROCEDURE - Step 5 [01/2019 - 04/2020] , or refer to PROCEDURE - Step 5 [04/2020 - 09/2022]

1. Uniformly loosen and remove the 11 bolts from the stiffening crankcase assembly.

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2. Remove the stiffening crankcase assembly by prying between the stiffening crankcase assembly and cylinder block sub-assembly with a screwdriver with its tip wrapped with protective tape.
   NOTE:

   Be careful not to damage the contact surfaces of the stiffening crankcase assembly and cylinder block sub-assembly.

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   *a	Protective Tape

1. Remove the rear engine oil seal from the cylinder block sub-assembly.
   NOTE:

   Be careful not to damage the crankshaft.

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