| Last Modified: 4-30-2014 | 6.6 N | Doc ID: RM000000SMC007X |
| Model Year: 2006 | Model: LX470 | Prod Date Range: [05/2005 - ] |
| Title: 2UZ-FE ENGINE MECHANICAL: VALVE CLEARANCE: ADJUSTMENT; 2006 MY LX470 [05/2005 - ] | ||
ADJUSTMENT
1.
DRAIN ENGINE COOLANT
![2006 MY LX470 [05/2005 - ]; 2UZ-FE COOLING: COOLANT: REPLACEMENT+](../../../../stylegraphics/info.gif "2006 MY LX470 [05/2005 - ]; 2UZ-FE COOLING: COOLANT: REPLACEMENT+")
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag activation.
3.
REMOVE V-BANK COVER
4.
REMOVE AIR CLEANER HOSE ASSEMBLY
5.
REMOVE DRIVE BELT
6.
REMOVE OIL COOLER PIPE
7.
REMOVE IGNITION COIL ASSEMBLY
8.
REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH
9.
REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH
10.
REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY RH
11.
REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH
12. SET NO. 1 CYLINDER TO TDC/COMPRESSION
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(a) Turn the crankshaft damper, and align its groove with timing mark "0" of the No. 1 timing belt cover. |
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(b) Check that the timing marks of the camshaft timing pulleys and timing belt rear plates are aligned. If not, turn the crankshaft 1 complete revolution (360°) and align the marks as above. |
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13. INSPECT VALVE CLEARANCE
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(a) Check only the valves indicated. (1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft. Standard valve clearance (Cold):
(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed. |
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(b) Turn the crankshaft 1 revolution (360°) and align the marks. |
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(c) Check only the valves indicated in the illustration. Measure the valve clearance.
Standard valve clearance (Cold):
|
Valve |
Specified Condition |
|---|---|
|
Intake |
0.15 to 0.25 mm (0.006 to 0.010 in.) |
|
Exhaust |
0.25 to 0.35 mm (0.010 to 0.014 in.) |
14. REMOVE TIMING BELT
(a)
Remove the timing belt
.
15.
REMOVE CAMSHAFT (for Bank 2)
16.
REMOVE CAMSHAFT (for Bank 1)
17. ADJUST VALVE CLEARANCE
(a) Using a powerful magnet, remove the valve lifter and adjusting shim.
NOTICE:
- Since the shims might drop inside the cylinder head, the operation should be performed slowly.
- Shims should be classified by the installation.
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(b) Determine the replacement adjusting shim size according to these formulas and 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 is within the specified value. T = Thickness of removed shim A = Measured valve clearance N = Thickness of new shim Standard valve clearance:
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(c) Select a new shim with a thickness as close as possible 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).
(d) Place a new adjusting shim on the valve.
(e) Set the valve lifter in place.
(f) Recheck the valve clearance.
Standard intake valve clearance (Cold):
0.15 to 0.25 mm (0.006 to 0.010 in.)
EXAMPLE:
A 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.
New shim thickness:
|
Shim No. |
Thickness |
Shim No. |
Thickness |
Shim No. |
Thickness |
|---|---|---|---|---|---|
|
00 |
2.000 mm (0.0787 in.) |
28 |
2.280 mm (0.0898 in.) |
56 |
2.560 mm (0.1008 in.) |
|
02 |
2.020 mm (0.0795 in.) |
30 |
2.300 mm (0.0906 in.) |
58 |
2.580 mm (0.1016 in.) |
|
04 |
2.040 mm (0.0803 in.) |
32 |
2.320 mm (0.0913 in.) |
60 |
2.600 mm (0.1024 in.) |
|
06 |
2.060 mm (0.0811 in.) |
34 |
2.340 mm (0.0921 in.) |
62 |
2.620 mm (0.1031 in.) |
|
08 |
2.080 mm (0.0819 in.) |
36 |
2.360 mm (0.0929 in.) |
64 |
2.640 mm (0.1039 in.) |
|
10 |
2.100 mm (0.0827 in.) |
38 |
2.380 mm (0.0937 in.) |
66 |
2.660 mm (0.1047 in.) |
|
12 |
2.120 mm (0.0835 in.) |
40 |
2.400 mm (0.0945 in.) |
68 |
2.680 mm (0.1055 in.) |
|
14 |
2.140 mm (0.0843 in.) |
42 |
2.420 mm (0.0953 in.) |
70 |
2.700 mm (0.1063 in.) |
|
16 |
2.160 mm (0.0850 in.) |
44 |
2.440 mm (0.0961 in.) |
72 |
2.720 mm (0.1071 in.) |
|
18 |
2.180 mm (0.0858 in.) |
46 |
2.460 mm (0.0969 in.) |
74 |
2.740 mm (0.1079 in.) |
|
20 |
2.200 mm (0.0866 in.) |
48 |
2.480 mm (0.0976 in.) |
76 |
2.760 mm (0.1087 in.) |
|
22 |
2.220 mm (0.0874 in.) |
50 |
2.500 mm (0.0984 in.) |
78 |
2.780 mm (0.1094 in.) |
|
24 |
2.240 mm (0.0882 in.) |
52 |
2.520 mm (0.0992 in.) |
80 |
2.800 mm (0.1102 in.) |
|
26 |
2.260 mm (0.0890 in.) |
54 |
2.540 mm (0.1000) in. |
- |
- |
Standard exhaust valve clearance (Cold):
0.25 to 0.35 mm (0.010 to 0.014 in.)
EXAMPLE:
A 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.
New shim thickness:
|
Shim No. |
Thickness |
Shim No. |
Thickness |
Shim No. |
Thickness |
|---|---|---|---|---|---|
|
00 |
2.000 mm (0.0787 in.) |
28 |
2.280 mm (0.0898 in.) |
56 |
2.560 mm (0.1008 in.) |
|
02 |
2.020 mm (0.0795 in.) |
30 |
2.300 mm (0.0906 in.) |
58 |
2.580 mm (0.1016 in.) |
|
04 |
2.040 mm (0.0803 in.) |
32 |
2.320 mm (0.0913 in.) |
60 |
2.600 mm (0.1024 in.) |
|
06 |
2.060 mm (0.0811 in.) |
34 |
2.340 mm (0.0921 in.) |
62 |
2.620 mm (0.1031 in.) |
|
08 |
2.080 mm (0.0819 in.) |
36 |
2.360 mm (0.0929 in.) |
64 |
2.640 mm (0.1039 in.) |
|
10 |
2.100 mm (0.0827 in.) |
38 |
2.380 mm (0.0937 in.) |
66 |
2.660 mm (0.1047 in.) |
|
12 |
2.120 mm (0.0835 in.) |
40 |
2.400 mm (0.0945 in.) |
68 |
2.680 mm (0.1055 in.) |
|
14 |
2.140 mm (0.0843 in.) |
42 |
2.420 mm (0.0953 in.) |
70 |
2.700 mm (0.1063 in.) |
|
16 |
2.160 mm (0.0850 in.) |
44 |
2.440 mm (0.0961 in.) |
72 |
2.720 mm (0.1071 in.) |
|
18 |
2.180 mm (0.0858 in.) |
46 |
2.460 mm (0.0969 in.) |
74 |
2.740 mm (0.1079 in.) |
|
20 |
2.200 mm (0.0866 in.) |
48 |
2.480 mm (0.0976 in.) |
76 |
2.760 mm (0.1087 in.) |
|
22 |
2.220 mm (0.0874 in.) |
50 |
2.500 mm (0.0984 in.) |
78 |
2.780 mm (0.1094 in.) |
|
24 |
2.240 mm (0.0882 in.) |
52 |
2.520 mm (0.0992 in.) |
80 |
2.800 mm (0.1102 in.) |
|
26 |
2.260 mm (0.0890 in.) |
54 |
2.540 mm (0.1000) in. |
- |
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18.
INSTALL CAMSHAFT (for Bank 1)
19.
INSTALL CAMSHAFT (for Bank 2)
20. INSTALL TIMING BELT
(a)
Install the timing belt
.
21. RECHECK VALVE CLEARANCE
(a) Check the valve clearance (see "INSPECT VALVE CLEARANCE" procedures).
22.
INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY LH
23.
INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY RH
24.
INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH
25.
INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH
26.
INSTALL IGNITION COIL ASSEMBLY
27.
INSTALL OIL COOLER PIPE
28.
INSTALL DRIVE BELT
29.
INSTALL AIR CLEANER HOSE ASSEMBLY
30.
INSTALL V-BANK COVER
31.
ADD ENGINE COOLANT
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