Toyota Tundra. Manual — part 1886

Fig. 279: Measuring Clearance Between Piston Ring & Wall Of Ring Groove Using
Feeler Gauge
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Inspect the piston ring end gap

1

Insert the piston ring into the cylinder bore

2

Using a piston, push the piston ring a little beyond the bottom of the ring travel, 105 mm
(4 13 in ) from the top of the cylinder block

Fig. 280: Identifying Piston Ring End Gap
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3

Using a feeler gauge, measure the end gap

Standard end gap

END GAP SPECIFICATION

End Gap

Specified Condition

No 1 piston ring 0 300 to 0 400 mm (0 0118 to 0 0157 in )
No 2 piston ring 0 400 to 0 550 mm (0 0157 to 0 0217 in )

Oil ring (Side rail) 0 130 to 0 380 mm (0 00511 to 0 0150 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra

Fig. 281: Measuring End Gap Using Feeler Gauge
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Maximum end gap

END GAP SPECIFICATION

If the end gap is greater than the maximum, replace the piston ring If the end gap is greater
than the maximum even with a new piston ring, rebore all 8 cylinders or replace the cylinder
block sub-assembly

6

INSPECT CONNECTING ROD SUB-ASSEMBLY

a

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

1

Check if the connecting rod is bent

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 sub-assembly

Fig. 282: Checking Connecting Rod Alignment Using Rod Aligner & Feeler Gauge
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Check if the connecting rod is twisted

End Gap

Specified Condition

No 1 piston ring 1 10 mm (0 0433 in )
No 2 piston ring 1 30 mm (0 0512 in )

Oil ring (Side rail) 0 90 mm (0 0354 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra

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 sub-assembly

Fig. 283: Checking If Connecting Rod Is Twisted
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

7

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

Fig. 284: Measuring Circle Runout At Center Journal Using Dial Indicator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Maximum circle runout: 0.04 mm (0.00157 in.)

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

b

Inspect the main journals and crank pins

1

Using a micrometer, measure the diameter of each main journal and crank pin

Standard diameter

STANDARD DIAMETER SPECIFICATION

Item

Specified Condition

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra

If the diameter is not as specified, check the oil clearance If necessary, replace the
crankshaft

Fig. 285: Measuring Diameter Of Each Main Journal & Crank Pin Using Micrometer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Check each main journal and crank pin for taper and out of round as shown below

Maximum taper and out of round: 0.02 mm (0.000787 in.)

If the taper and out of round is greater than the maximum, replace the crankshaft

8

INSPECT CONNECTING ROD BOLT

a

Using a vernier caliper, measure the tension portion of the connecting rod bolt

Standard diameter: 7.200 to 7.300 mm (0.283 to 0.287 in.)

Minimum diameter: 7.00 mm (0.276 in.)

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

Main journal 66 988 to 67 000 mm (2 6373 to 2 6378 in )

Crank pin 51 982 to 52 000 mm (2 0465 to 2 0472 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra