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
(b)
Remove the camshafts. (See page
(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
)
(h)
Reinstall the timing belt. (See page
)
(i)
Recheck the valve clearance.
11.
REINSTALL CYLINDER HEAD COVERS
12.
REINSTALL IGNITION COILS
13.
REINSTALL NO.3 TIMING BELT COVERS
(See page
)
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
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