Toyota Tundra. Manual — part 2003

5

INSPECT PISTON SUB-ASSEMBLY WITH PIN

a

Using a micrometer, measure the piston diameter at a position that is 15 0 mm (0 591 in ) from the
bottom of the piston (refer to the illustration )

Standard diameter: 93.950 to 93.960 mm (3.6988 to 3.6992 in.)

Minimum diameter: 93.815 mm (3.6935 in.)

If the diameter is less than the minimum, replace the piston

Fig. 111: Measuring Piston Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6

INSPECT PISTON OIL CLEARANCE

a

Measure the cylinder bore diameter in the thrust direction

b

Subtract the piston diameter measurement from the cylinder bore diameter measurement

Standard oil clearance: 0.040 to 0.062 mm (0.00157 to 0.00244 in.)

Maximum oil clearance: 0.385 mm (0.0152 in.)

If the oil clearance is greater than the maximum, replace all the pistons If necessary, replace the
cylinder block

7

INSPECT PISTON PIN OIL CLEARANCE

a

Check each mark on the piston, piston pin and connecting rod

2009 Toyota Tundra

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

Fig. 112: Identifying Connecting Rod Bush Inside Diameter Mark
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a caliper gauge, measure the inside diameter of the piston pin hole

Standard piston pin hole inside diameter

STANDARD PISTON PIN HOLE INSIDE DIAMETER SPECIFICATIONS

Fig. 113: Measuring Inside Diameter Of Piston Pin Hole
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

Using a micrometer, measure the piston pin diameter

Standard piston pin diameter

STANDARD PISTON PIN DIAMETER SPECIFICATIONS

Mark

Specified Condition

A

21 998 to 22 001 mm (0 86606 to 0 86618 in )

B

22 002 to 22 004 mm (0 86622 to 0 86630 in )

C

22 005 to 22 007 mm (0 86634 to 0 86642 in )

Mark

Specified Condition

A

21 997 to 22 000 mm (0 86602 to 0 86614 in )

B

22 001 to 22 003 mm (0 86618 to 0 86626 in )

C

22 004 to 22 006 mm (0 86630 to 0 86638 in )

2009 Toyota Tundra

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

Fig. 114: Measuring Piston Pin Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Subtract the piston pin diameter measurement from the piston pin hole diameter measurement

Standard oil clearance: -0.002 to 0.004 mm (-0.0000787 to 0.000157 in.)

Maximum oil clearance: 0.015 mm (0.000591 in.)

If the oil clearance is greater than the maximum, replace the piston and piston pin as a set

e

Using a caliper gauge, measure the inside diameter of the connecting rod bush

Standard bush inside diameter

STANDARD BUSH INSIDE DIAMETER SPECIFICATIONS

Fig. 115: Measuring Inside Diameter Of Connecting Rod Bush
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

f

Subtract the piston pin diameter measurement from the bush inside diameter measurement

Standard oil clearance: 0.005 to 0.011 mm (0.000197 to 0.000433 in.)

Maximum oil clearance: 0.03 mm (0.00118 in.)

If the oil clearance is greater than the maximum, replace the connecting rod, and replace the piston
and pin as a set

8

INSPECT CONNECTING ROD SUB-ASSEMBLY

a

Using a rod aligner and feeler gauge, check the connecting rod alignment

1

Check for bend

Mark

Specified Condition

A

22 005 to 22 008 mm (0 86634 to 0 86645 in )

B

22 009 to 22 011 mm (0 86649 to 0 86657 in )

C

22 012 to 22 014 mm (0 86661 to 0 86669 in )

2009 Toyota Tundra

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

Maximum bend: 0.05 mm (0.00197 in.) per 100 mm (3.94 in.)

If the bend is greater than the maximum, replace the connecting rod

Fig. 116: Checking Connecting Rod Alignment For Bend
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Check for twist

Maximum twist: 0.15 mm (0.00591 in.) per 100 mm (3.94 in.)

If the twist is greater than the maximum, replace the connecting rod

Fig. 117: Checking Connecting Rod Alignment For Twist
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

9

INSPECT CRANKSHAFT

a

Inspect for circle runout

1

Place the crankshaft on V-blocks

2

Using a dial indicator, measure the circle runout at the center journal

Maximum circle runout: 0.06 mm (0.00236 in.)

If the circle runout is greater than the maximum, replace the crankshaft

2009 Toyota Tundra

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