Toyota Tundra. Manual — part 1817

Fig. 279: Measuring Outside Thread Diameter Of Bolt Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:

If a visual check reveals no excessively thin areas, check the center of the bolt and find the area that
has the lowest diameter If the diameter is less than the minimum, replace the cylinder head bolt

2

CLEAN CYLINDER HEAD SUB-ASSEMBLY

a

Using a gasket scraper, remove all the gasket material from the cylinder block contact surface

Fig. 280: Using Gasket Scraper To Remove Gasket Material From Cylinder Block Contact
Surface
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a wire brush, remove all the carbon from the combustion chambers

NOTE:

Be careful not to scratch the cylinder block contact surface.

NOTE:

Be careful not to scratch the combustion chambers.

2009 Toyota Tundra

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

Fig. 281: Using Wire Brush To Remove Carbon From Combustion Chambers
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

Using a valve guide bushing brush and solvent, clean all the valve guide bushes

Fig. 282: Cleaning Valve Guide Bushes Using Valve Guide Bushing Brush & Solvent
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Using a soft brush and solvent, thoroughly clean the cylinder head

Fig. 283: Cleaning Cylinder Head Using Soft Brush And Solvent
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3

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 manifolds

Standard warpage

2009 Toyota Tundra

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

WARPAGE SPECIFICATION

Maximum warpage

WARPAGE SPECIFICATION

If the warpage is greater than the maximum, replace the cylinder head sub-assembly

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 08 mm (0 00315 in )

Item

Specified Condition

Cylinder block side 0 10 mm (0 00394 in )

Intake manifold side 0 10 mm (0 00394 in )

Exhaust manifold side 0 10 mm (0 00394 in )

2009 Toyota Tundra

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

Fig. 284: Measuring Warpage Of Contact Surfaces Of Cylinder Block And Manifolds Using
Straight Edge & Feeler Gauge
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a dye penetrant, check the intake ports, exhaust ports and cylinder surface for cracks If there
are cracks, replace the cylinder head sub-assembly

2009 Toyota Tundra

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