Camshaft Installation

Apply a light coat of engine oil to the camshaft journals, camshaft housing and camshaft bearing caps.

Install the No. 3 and No. 4 camshafts to the camshaft housing.

Confirm the marks and numbers on the camshaft bearing caps and place them in their proper positions and directions.

Temporarily install the 10 bolts in the order shown in the illustration.

Check the valve rocker arms as shown in the illustration.

Apply seal packing in a continuous line as shown in the illustration.

Seal packing:

Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent

Standard seal diameter:

3.5 to 4.0 mm (0.138 to 0.157 in.)

NOTICE:

1. Remove any oil from the contact surface.
   
2. Install the camshaft housing within 3 minutes and tighten the bolts within 15 minutes after applying seal packing.
   

Install the camshaft housing, and then install the 18 bolts in the order shown in the illustration.

Torque:

for bolt A:

10 N*m{102 kgf*cm, 7 ft.*lbf}

except bolt A:

30 N*m{306 kgf*cm, 22 ft.*lbf}

Text in Illustration

*A	for Intake Side
*B	for Exhaust Side
*1	Knock Pin
	Bolt
	Bolt A

NOTICE:

1. Do not start the engine for at least 2 hours after the installation.
   
2. Make sure that the knock pins of the camshafts are positioned as shown in the illustration before installing the camshaft housing.
   

Tighten the 10 bolts in the order shown in the illustration.

Torque:

16 N*m{163 kgf*cm, 12 ft.*lbf}

NOTICE:

Thoroughly wipe clean any seal packing.

Apply a light coat of engine oil to the camshaft journals, camshaft housing and camshaft bearing caps.

Install the No. 1 and No. 2 camshafts to the camshaft housing.

Confirm the marks and numbers on the camshaft bearing caps and place them in their proper positions and directions.

Temporarily install the 10 bolts in the order shown in the illustration.

Check the valve rocker arms as shown in the illustration.

Apply seal packing in a continuous line as shown in the illustration.

Seal packing:

Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent

Standard seal diameter:

3.5 to 4.0 mm (0.138 to 0.157 in.)

NOTICE:

1. Remove any oil from the contact surface.
   
2. Install the camshaft housing within 3 minutes and tighten the bolts within 15 minutes after applying seal packing.
   

Install the camshaft housing, and then install the 18 bolts in the order shown in the illustration.

Torque:

for bolt A:

10 N*m{102 kgf*cm, 7 ft.*lbf}

except bolt A:

30 N*m{306 kgf*cm, 22 ft.*lbf}

Text in Illustration

*A	for Exhaust Side
*B	for Intake Side
*1	Knock Pin
	Bolt
	Bolt A

NOTICE:

1. Do not start the engine for at least 2 hours after the installation.
   
2. Make sure that the knock pins of the camshafts are positioned as shown in the illustration before installing the camshaft housing.
   

Tighten the 10 bolts in the order shown in the illustration.

Torque:

16 N*m{163 kgf*cm, 12 ft.*lbf}

NOTICE:

Thoroughly wipe clean any seal packing.

Install the No. 2 chain tensioner with the 2 bolts.

Torque:

10 N*m{102 kgf*cm, 7 ft.*lbf}

While raising up the No. 2 chain tensioner, insert a pin with a diameter of 1.0 mm (0.0394 in.) into the hole to fix the tensioner in place.

Align the No. 1 chain's mark plates (orange) with the camshaft timing gear's timing mark and attach the chain to the gear as shown in the illustration.

Align the No. 1 chain's mark plate (orange) with the crankshaft timing gear's timing mark and attach the chain to the gear as shown in the illustration.

Align the No. 2 chain's mark plates (yellow) with the timing marks (1-dot marks) of the camshaft timing gear and camshaft timing exhaust gear, and attach the No. 2 chain to the gears as shown in the illustration.

HINT:

The crankshaft timing gear and camshaft exhaust gear are installed with the No. 1 and No. 2 chains connected to the gears.

Install the crankshaft timing sprocket RH to the crankshaft.

Align the knock pin of the No. 1 camshaft with the pin hole of the camshaft timing gear and install the camshaft timing gear.

Using the hexagonal portion of the No. 2 camshaft, align the knock pin of the No. 2 camshaft with the pin hole of the camshaft timing exhaust gear and install the camshaft timing exhaust gear.

Remove the pin from the No. 2 chain tensioner.

Install the No. 1 chain vibration damper RH with the 2 bolts.

Torque:

21 N*m{214 kgf*cm, 15 ft.*lbf}

Move the stopper plate upward to release the lock and push the plunger deep into the No. 1 chain tensioner.

Move the stopper plate downward to set the lock and insert a hexagon wrench into the hole of the stopper plate.

Install the No. 1 chain tensioner with the 2 bolts.

Torque:

10 N*m{102 kgf*cm, 7 ft.*lbf}

Remove the hexagon wrench from the No. 1 chain tensioner.

Install the No. 3 chain tensioner with the 2 bolts.

Torque:

10 N*m{102 kgf*cm, 7 ft.*lbf}

While pushing down the No. 3 chain tensioner, insert a pin with a diameter of 1.0 mm (0.0394 in.) into the hole to fix the tensioner in place.

Align the No. 1 chain's mark plates (orange) with the camshaft timing gear's timing mark and attach the chain to the gear as shown in the illustration.

Align the No. 1 chain's mark plate (orange) with the crankshaft timing gear's timing mark and attach the chain to the gear as shown in the illustration.

Align the No. 2 chain's mark plates (yellow) with the timing marks (1-dot marks) of the camshaft timing gear and camshaft timing exhaust gear, and attach the No. 2 chain to the gears as shown in the illustration.

HINT:

The crankshaft timing gear and camshaft exhaust gear are installed with the No. 1 and No. 2 chains connected to the gears.

Install the crankshaft timing sprocket LH to the crankshaft.

Align the knock pin of the No. 3 camshaft with the pin hole of the camshaft timing gear and install the camshaft timing gear.

Using the hexagonal portion of the No. 4 camshaft, align the knock pin of the No. 4 camshaft with the pin hole of the camshaft timing exhaust gear and install the camshaft timing exhaust gear.

NOTICE:

Because the gears' timing mark positions may shift due to looseness of the No. 1 chain, use the hexagonal portion of the camshaft to hold the No. 3 camshaft in place until the No. 1 chain tensioner is installed.

Remove the pin from the No. 3 chain tensioner.

Move the stopper plate upward to release the lock and push the plunger deep into the No. 1 chain tensioner.

Move the stopper plate downward to set the lock and insert a hexagon wrench into the hole of the stopper plate.

Install a new gasket and the No. 1 chain tensioner with the 2 bolts.

Torque:

10 N*m{102 kgf*cm, 7 ft.*lbf}

Install the No. 1 chain vibration damper with the 2 bolts.

Torque:

21 N*m{214 kgf*cm, 15 ft.*lbf}

Remove the hexagon wrench from the No. 1 chain tensioner.

for Bank 1:

1. Using a wrench to hold the hexagonal portion of the No. 3 camshaft, install the camshaft timing gear bolt.
   

   Torque:

   100 N*m{1020 kgf*cm, 74 ft.*lbf}

   Text in Illustration

   *a	Hold
   	Turn





2. Using a wrench to hold the hexagonal portion of the No. 4 camshaft, install the camshaft timing exhaust gear bolt.
   

   Torque:

   100 N*m{1020 kgf*cm, 74 ft.*lbf}

   Text in Illustration

   *a	Hold
   	Turn

for Bank 2:

1. Using a wrench to hold the hexagonal portion of the No. 1 camshaft, install the camshaft timing gear bolt.
   

   Torque:

   100 N*m{1020 kgf*cm, 74 ft.*lbf}

   Text in Illustration

   *a	Hold
   	Turn





2. Using a wrench to hold the hexagonal portion of the No. 2 camshaft, install the camshaft timing exhaust gear bolt.
   

   Torque:

   100 N*m{1020 kgf*cm, 74 ft.*lbf}

   Text in Illustration

   *a	Hold
   	Turn

Temporarily install the pulley set bolt.

Rotate the crankshaft clockwise and check that the timing marks on the crankshaft timing gear and camshaft timing gears are as shown in the illustration.

Remove the crankshaft pulley set bolt.

Warm up the engine.

When using the GTS:

1. Connect the GTS to the DLC3.
   

2. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / IGN Advance.
   

   Standard ignition timing:

   7 to 24° BTDC @ idle (transmission in neutral and A/C switch off)
   

   HINT:

   Refer to the GTS operator's manual for further details.

3. Check that the ignition timing advances immediately when the engine speed is increased.
   

4. Disconnect the GTS from the DLC3.
   

When not using the GTS:

1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
   

   SST

   09843-18040
   

   Text in Illustration

   *a	Front view of DLC3

   NOTICE:

   Be sure not to improperly connect the terminals. This may damage the engine.

2. Connect the tester probe of a timing light to the wire of the ignition coil connector for the No. 1 cylinder.
   

   NOTICE:

   Use a timing light that detects primary signals.

3. Inspect the ignition timing during idling.
   

   Standard ignition timing:

   8 to 12° BTDC @ idle (transmission in neutral and A/C switch off)
   

4. Remove SST from the DLC3.
   

5. Inspect the ignition timing during idling.
   

   Standard ignition timing:

   7 to 24° BTDC @ idle (transmission in neutral and A/C switch off)
   

6. Disconnect the timing light from the engine.
   

Warm up the engine.

When using the GTS:

1. Connect the GTS to the DLC3.
   

2. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Engine Speed.
   

   Standard idle speed:

   650 to 750 rpm (transmission in neutral and A/C switch off)
   

   HINT:

   Refer to the GTS operator's manual for further details.

3. Disconnect the GTS from the DLC3.
   

When not using the GTS:

1. Connect SST to terminal 9 (TAC) of the DLC3.
   

   SST

   09843-18030
   

   Text in Illustration

   *a	Front view of DLC3

   NOTICE:

   Be sure not to improperly connect SST. This may damage the engine.

2. Race the engine at 2500 rpm for approximately 90 seconds.
   

3. Inspect the engine idle speed.
   

   Standard idle speed:

   650 to 750 rpm (transmission in neutral and A/C switch off)