Toyota Tundra. Manual — part 1999

Fig. 79: Identifying Exhaust Valve Seat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

Hand-lap the valve and valve seat with an abrasive compound

d

Check the valve seating position

CYLINDER BLOCK

COMPONENTS

Fig. 80: Identifying Cylinder Block Components With Torque Specifications
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

DISASSEMBLY

1

INSPECT CONNECTING ROD THRUST CLEARANCE

a

Using a dial indicator, measure the thrust clearance while moving the connecting rod back and
forth

Standard thrust clearance: 0.15 to 0.55 mm (0.00591 to 0.0217 in.)

Maximum thrust clearance: 0.70 mm (0.0276 in.)

If the thrust clearance is greater than the maximum, replace one or more connecting rods as
necessary If necessary, replace the crankshaft

2009 Toyota Tundra

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

Fig. 81: Checking Connecting Rod Thrust Clearance
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

INSPECT CONNECTING ROD OIL CLEARANCE

a

Check that the front mark on the connecting rod and cap are aligned to ensure correct reassembly

b

Remove the 2 connecting rod cap bolts

Fig. 82: Removing Connecting Rod Cap Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

Using the 2 removed connecting rod cap bolts, remove the connecting rod cap and lower bearing by
wiggling the connecting rod cap right and left

HINT:

Keep the lower bearing inserted to the connecting rod cap

2009 Toyota Tundra

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

Fig. 83: Removing Connecting Rod Cap And Lower Bearing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Clean the crank pin and bearing

e

Check the crank pin and bearing for pitting and scratches

If the crank pin or bearing is damaged, replace the bearings If necessary, replace the crankshaft

f

Lay a strip of Plastigage on the crank pin

Fig. 84: Laying Strip Of Plastigage On Crank Pin
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

g

Check that the front mark of the connecting rod cap is facing forward

Fig. 85: Identifying Front Mark On Connecting Rod Cap
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

h

Install and alternately tighten the bolts of the connecting rod cap in several steps

Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf)

NOTE:

Do not turn the crankshaft.

2009 Toyota Tundra

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

Fig. 86: Tightening Connecting Rod Cap Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

i

Mark the front side of each connecting rod cap bolt with paint

Fig. 87: Identifying Connecting Rod Cap Bolt Painted Mark
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

j

Tighten the cap bolts another 90° as shown in the illustration

k

Check that the painted marks are now at a 90° angle to the front

l

Remove the 2 connecting rod cap bolts

Fig. 88: Removing Connecting Rod Cap Bolts

NOTE:

Do not turn the crankshaft.

2009 Toyota Tundra

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