Toyota Tundra. Manual — part 1780

Fig. 53: Identifying Bearing Cap Bolt Tightening Sequence
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

9

Set the paint mark of the No 1 chain between the timing marks of the camshaft timing gear

Fig. 54: Setting Paint Mark Of No. 1 Chain Between Timing Marks Of Camshaft
Timing Gear
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

l

Install the No 3 chain tensioner

1

While pushing in the tensioner, insert a pin of 1 0 mm (0 0394 in ) into the hole to fix it

Fig. 55: Inserting Pin Into Hole
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Temporarily install the camshaft timing sprocket and No 3 chain tensioner, and align the
mark links (yellow) with the timing marks (1-dot mark and 2-dot mark) of the camshaft
timing gear and sprocket

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

3

Apply a light coat of engine oil to the threads and under the head of the No 3 chain tensioner
bolt

Fig. 56: Aligning Mark With Timing Marks Of Camshaft Timing Gear And Sprocket
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4

Install the No 3 chain tensioner with the bolt

Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)

m

Install the No 4 camshaft

1

Apply a light coat of engine oil to the thrust portions and journals of the No 4 camshaft

2

Apply a light coat of engine oil to the threads and under the head of the camshaft timing gear
set bolt

3

Align the knock pin hole on the camshaft timing sprocket with the knock pin of the No 4
camshaft, and insert the No 4 camshaft into the camshaft timing sprocket

4

Temporarily install the camshaft timing gear set bolt

Fig. 57: Identifying Camshaft Timing Gear Set Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NOTE:

As the thrust clearance of the camshaft is small, the camshaft must
be kept level while it is being installed. If the camshaft is not kept
level, the portion of the cylinder head which receives the shaft thrust
may crack or be damaged, causing the camshaft to seize or break. To
avoid this, the following steps should be carried out.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

5

Install the 4 bearing caps in their proper locations

Fig. 58: Identifying Bearing Cap Installing Locations
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6

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

7

Uniformly install the 8 bearing cap bolts in several steps in the order shown below

Torque: for 10 mm head

9.0 N*m (92 kgf*cm, 80 in.*lbf)

for 12 mm head

24 N*m (245 kgf*cm, 18 ft.*lbf)

Fig. 59: Identifying Bearing Cap Bolt Tightening Sequence
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

8

Hold the hexagonal portion of the No 4 camshaft with a wrench, and tighten the camshaft
timing gear set bolt

Torque: 100 N*m (1020 kgf*cm, 74 ft.*lbf)

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

Fig. 60: Holding Hexagonal Portion Of No. 4 Camshaft With Wrench
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

9

Remove the pin from the No 3 chain tensioner

n

Install the No 1 camshaft

1

Align the mark link (yellow) with the timing mark (1-dot mark) of the camshaft timing gear
as shown below

2

Apply a light of engine oil to the thrust portions and journals of the camshafts

Fig. 61: Aligning Mark With Timing Mark Of Camshaft Timing Gear
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3

Temporarily put the No 1 chain on the No 2 chain of the camshaft timing gear

NOTE:

As the thrust clearance of the camshaft is small, the camshaft must
be kept level while it is being installed. If the camshaft is not kept
level, the portion of the cylinder head which receives the shaft thrust
may crack or be damaged, causing the camshaft to seize or break. To
avoid this, the following steps should be carried out.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra