Toyota Tundra. Manual — part 1927

If not, correct the valve seat

9

INSPECT CYLINDER HEAD SUB-ASSEMBLY

a

Using a precision straightedge and feeler gauge, measure the warpage of the contact surfaces of the
cylinder block and manifold

Standard warpage

STANDARD WARPAGE SPECIFICATIONS

Item

Specified Condition

Cylinder block side 0 05 mm (0 00197 in )

Intake manifold side 0 08 mm (0 00315 in )

Exhaust manifold side 0 05 mm (0 00197 In )

2009 Toyota Tundra

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

Fig. 54: Measuring Warpage Of Contact Surfaces Of Cylinder Block And Manifold
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Maximum warpage:

0.10 mm (0.00394 in.)

If the warpage is more than the maximum, replace the cylinder head

b

Using a dye penetrant, check the intake ports, exhaust ports and cylinder surface for cracks If
cracked, replace the cylinder head

2009 Toyota Tundra

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

Fig. 55: Checking Cylinder Surface For Cracks
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REPLACEMENT

1

REPLACE INTAKE VALVE GUIDE BUSH

a

Heat the cylinder head to approximately 80 to 100°C (176 to 212°F)

b

Place the cylinder head on wooden blocks

c

Using SST and a hammer, tap out the valve guide bush

SST 09201-10000 (09201-01050), 09950-70010 (09951-07100)

Fig. 56: Tapping Out Valve Guide Bush
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Using a caliper gauge, measure the bush bore diameter of the cylinder head side

Standard cylinder bore diameter:

10.285 to 10.306 mm (0.405 to 0.406 in.)

If the bush bore diameter of the cylinder head is between 10 285 to 10 306 mm (0 405 to 0 406 in ),
proceed to the next step If the bush bore diameter of the cylinder head is 10 356 mm (0 408 in ) or
more, replace the cylinder head

2009 Toyota Tundra

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

Fig. 57: Measuring Bush Bore Diameter Of Cylinder Head Side
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e

Select a new guide bush (STD or O/S 0 05), and measure its diameter

f

Machine the bush bore diameter of the cylinder head side to the diameter of the selected guide
bush

Bush bore diameter

BUSH BORE DIAMETER SPECIFICATION

Standard bush length:

41.3 to 41.7 mm (1.63 to 1.64 in.)

g

Using SST and a hammer, tap in a new guide bush to the standard protrusion height

SST 09201 -10000 (09201 -01050), 09950-70010 (09951-07100)

Standard protrusion height:

14.3 to 14.7 mm (0.563 to 0.579 in.)

Bush Size

Specified Condition

STD

10 333 to 10 344 mm (0 4068 to 0 4072 in )

O/S 0 05 10 383 to 10 394 mm (0 4088 to 0 4092 in )

2009 Toyota Tundra

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