Toyota Sequoia (2005). Manual - part 649

A02213

EM–6

–

ENGINE MECHANICAL

VALVE CLEARANCE

2585

10.

ADJUST VALVE CLEARANCE

(a)

Remove the timing belt. (See page 

EM–16

)

(b)

Remove the camshafts. (See page 

EM–36

)

(c)

Remove the valve lifter and adjusting shim.

(d)

Determine the replacement adjusting shim size according
to these Formula or Charts:
(1)

Using a micrometer, measure the thickness of the
removed shim.

(2)

Calculate the thickness of a new shim so that the
valve clearance comes within the specified value.

T ........... Thickness of removed shim
A ........... Measured valve clearance
N ........... Thickness of new shim
Intake: N = T + (A – 0.20 mm (0.008 in.))
Exhaust: N = T + (A – 0.30 mm (0.012 in.))
(3)

Select a new shim with thickness as close as pos-
sible to the calculated value.

HINT:
Shims are available in 41 increments of 0.020 mm (0.0008 in.),
from 2.00 mm (0.0787 in.) to 2.80 mm (0.1102 in.).
(e)

Place a new adjusting shim on the valve.

(f)

Place the valve lifter.

(g)

Reinstall the camshafts. (See page 

EM–60

)

(h)

Reinstall the timing belt. (See page 

EM–23

)

(i)

Recheck the valve clearance.

11.

REINSTALL CYLINDER HEAD COVERS

12.

REINSTALL IGNITION COILS

13.

REINSTALL NO.3 TIMING BELT COVERS 
(See page 

EM–23

)

14.

REINSTALL AIR CLEANER AND INTAKE AIR
CONNECTOR ASSEMBLY

15.

REINSTALL THROTTLE BODY COVER

16.

REINSTALL BATTERY CLAMP COVER

A031

1

1

Adjusting Shim Selection Chart (Intake)

Shim No.

Installed shim thickness

mm (in.)

mm (in.)

Measured clearance

Thickness

New shim thickness

Shim No.

Thickness

Shim No.

Thickness

mm (in.)

Intake valve clearance (Cold):
0.15 – 0.25 mm (0.006 – 0.010 in.)

EXAMPLE:
The 2.300 mm (0.0906 in.) shim is installed,
and the measured clearance is 0.440 mm
(0.0173 in.). Replace the 2.300 mm (0.0906
in.) shim with a No. 54 shim.

–

ENGINE MECHANICAL

V

A

L

VE CLEARANCE

EM–7

2586

2005

 SEQUOIA   (RM1

146U)

A031

12

Adjusting Shim Selection Chart (Exhaust)

Installed shim thickness

mm (in.)

mm (in.)

Measured clearance

Shim No.

Thickness

New shim thickness

Shim No.

Thickness

Shim No.

Thickness

mm (in.)

Exhaust valve clearance (Cold):
0.25 – 0.35 mm (0.010 – 0.014 in.)

EXAMPLE:
The 2.300 mm (0.0906 in.) shim is installed,
and the measured clearance is 0.440 mm
(0.0173 in.). Replace the 2.300 mm (0.0906
in.) shim with a No. 44 shim.

EM–8

–

ENGINE MECHANICAL

V

A

L

VE CLEARANCE

2587

2005

 SEQUOIA   (RM1

146U)

EM0KT–11

D13872

Hand–Held Tester

DLC3

CAN VIM

A08769

A23394

TC

SST

DLC3

CG

–

ENGINE MECHANICAL

IGNITION TIMING

EM–9

2588

IGNITION TIMING

INSPECTION

1.

WARM UP ENGINE

Allow the engine to warm up to normal operating temperature.

2.

INSPECT IGNITION TIMING

(a)

When using a hand–held tester.
(1)

Connect a hand–held tester to the Controller Area
Network Vehicle Interface Module (CAN VIM). Then
connect the CAN VIM to the Date Link Connector 3
(DLC3).

(2)

Please refer to the hand–held tester operator’s
manual for further details.

Ignition timing: 5 to 15

°

 BTDC at idle

(Transmission in neutral)
(3)

Disconnect the hand–held tester and CAN VIM
from the DLC3.

(b)

When not using a hand–held tester.
(1)

Connect the tester probe of a timing light to the wire
(black – red) of the ignition coil connector for the
No.1 cylinder.

(2)

Using SST, connect terminals TC and CG of the
DLC3.

SST

09843–18040