Toyota Tundra. Manual — part 1968

Maximum chain elongation:

137.6 mm (5.42 in.)

HINT:

Perform the measurement at 3 random places If the elongation is more than the maximum, replace
the chain

9

INSPECT CRANKSHAFT TIMING SPROCKET RH

a

Wrap the chain around the sprocket

b

Using a vernier caliper, measure the sprocket diameter with the chain

Minimum sprocket diameter (with chain):

61.4 mm (2.42 in.)

HINT:

The vernier caliper must contact the chain rollers for the measurement

If the diameter is less than the minimum, replace the chain and sprocket

Fig. 316: Measuring Crankshaft Timing Sprocket Diameter - RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

10

INSPECT CRANKSHAFT TIMING SPROCKET LH

a

Wrap the chain around the sprocket

b

Using a vernier caliper, measure the sprocket diameter with the chain

Minimum sprocket diameter (with chain):

61.4 mm (2.42 in.)

HINT:

The vernier caliper must contact the chain rollers for the measurement

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra

If the diameter is less than the minimum, replace the chain and sprocket

Fig. 317: Measuring Sprocket Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

11

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

Fig. 318: Identifying Stopper Plate And Plunger
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

12

INSPECT NO. 2 CHAIN TENSIONER ASSEMBLY

a

Check that the plunger moves smoothly

b

Measure the worn depth of the chain tensioner

Maximum depth:

0.9 mm (0.0354 in.)

If the depth is more than the maximum, replace the chain tensioner

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra

Fig. 319: Identifying Worn Depth Of No. 2 Chain Tensioner
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

13

INSPECT NO. 3 CHAIN TENSIONER ASSEMBLY

a

Check that the plunger moves smoothly

b

Measure the worn depth of the chain tensioner

Maximum depth:

0.9 mm (0.0354 in.)

If the depth is more than the maximum, replace the chain tensioner

Fig. 320: Identifying Worn Depth Of No. 3 Chain Tensioner
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

14

INSPECT NO. 1 CHAIN TENSIONER SLIPPER LH

a

Measure the worn depth of the chain tensioner slipper

Maximum depth:

1.0 mm (0.0394 in.)

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

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra

Fig. 321: Measuring Worn Depth Of Chain Tensioner Slipper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

15

INSPECT NO. 1 CHAIN TENSIONER SLIPPER RH

a

Measure the worn depth of the chain tensioner slipper

Maximum depth:

1.0 mm (0.0394 in.)

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

Fig. 322: Identifying Worn Depth Of No. 1 Chain Tensioner Slipper - RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

16

INSPECT NO. 1 CHAIN VIBRATION DAMPER LH

a

Measure the worn depth of the chain vibration damper

Maximum depth:

1.0 mm (0.0394 in.)

If the depth is more than the maximum, replace the chain vibration damper

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra