Toyota Tundra. Manual — part 1828

Maximum oil clearance: 0.093 mm (0.00366 in.)

If the thrust oil clearance is greater than the maximum, replace the idle gear shaft and idle gear

Fig. 356: Measuring Inside Diameter Of Idle Gear Using Caliper Gauge
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

38

INSPECT NO. 1 CHAIN TENSIONER ASSEMBLY

a

Move the stopper plate upward to release the lock Push the plunger and check that it moves
smoothly If necessary, replace the chain tensioner assembly

Fig. 357: Identifying No. 1 Chain Tensioner Assembly Stopper Plate & Plunger
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

39

INSPECT NO. 2 CHAIN TENSIONER ASSEMBLY

a

Check that the plunger moves smoothly

b

Measure the worn depth of the chain tensioner

Maximum depth: 1.0 mm (0.0394 in.)

If the depth is greater than the maximum, replace the No 2 chain tensioner assembly

2009 Toyota Tundra

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

Fig. 358: Identifying No. 2 Chain Tensioner Assembly Worn Depth
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

40

INSPECT NO. 3 CHAIN TENSIONER ASSEMBLY

a

Check that the plunger moves smoothly

b

Measure the worn depth of the chain tensioner

Maximum depth: 1.0 mm (0.0394 in.)

If the depth is greater than the maximum, replace the No 3 chain tensioner assembly

Fig. 359: Identifying No. 3 Chain Tensioner Assembly Worn Depth
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

41

INSPECT CHAIN TENSIONER SLIPPER

a

Measure the worn depth of the chain tensioner slipper

Maximum depth: 1.0 mm (0.0394 in.)

If the depth is greater than the maximum, replace the chain tensioner slipper

2009 Toyota Tundra

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

Fig. 360: Identifying Chain Tensioner Slipper Worn Depth
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

42

INSPECT NO. 1 CHAIN VIBRATION DAMPER

a

Measure the worn depth of the No 1 chain vibration damper

Maximum depth: 1.0 mm (0.0394 in.)

If the depth is greater than the maximum, replace the No 1 chain vibration damper

Fig. 361: Identifying No. 1 Chain Vibration Damper Worn Depth
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

43

INSPECT NO. 2 CHAIN VIBRATION DAMPER

a

Measure the worn depth of the No 2 chain vibration damper

Maximum depth: 1.0 mm (0.0394 in.)

If the depth is greater than the maximum, replace the No 2 chain vibration damper

Fig. 362: Identifying No. 2 Chain Vibration Damper Worn Depth

2009 Toyota Tundra

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

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

44

INSPECT EXHAUST MANIFOLD FOR FLATNESS

a

Using a precision straight edge and feeler gauge, measure the warpage of the contact surface of the
cylinder head

Maximum warpage: 0.70 mm (0.0276 in.)

If warpage is greater than the maximum, replace the exhaust manifold

HINT:

Maximum warpage of each installation surface: 0 3 mm (0 0118 in )

Fig. 363: Measuring Warpage Of Contact Surface Of Cylinder Head Using Straight Edge &
Feeler Gauge
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

45

INSPECT INTAKE MANIFOLD FOR FLATNESS

a

Using a precision straight edge and feeler gauge, measure the warpage of the contact surface of the
cylinder head and intake air surge tank

Maximum warpage: for intake air surge tank side: 0.80 mm (0.0315 in.)

for cylinder head side: 0.20 mm (0.00787 in.)

If warpage is greater than the maximum, replace the intake manifold

2009 Toyota Tundra

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