Lexus NX: Removal
REMOVAL
PROCEDURE
1. REMOVE SERVICE PLUG GRIP
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2. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY
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3. REMOVE REAR ENGINE UNDER COVER RH
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4. REMOVE FAN AND GENERATOR V BELT
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5. DISCONNECT RADIATOR RESERVE TANK ASSEMBLY
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6. REMOVE AIR CLEANER CAP SUB-ASSEMBLY
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7. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
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8. REMOVE AIR CLEANER CASE SUB-ASSEMBLY
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9. DISCONNECT GROUND WIRE
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10. DISCONNECT ENGINE WIRE
(a) Disconnect the 17 connectors and 2 clamps.
(b) Remove the 7 bolts and 3 nuts and disconnect the engine wire from the engine.
11. REMOVE IGNITION COIL ASSEMBLY
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12. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
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13. SET NO. 1 CYLINDER TO TDC/COMPRESSION
| (a) Turn the crankshaft until the timing mark (groove) of the crankshaft pulley assembly and the timing mark "0" of the timing chain cover are aligned. |
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(b) Check that each timing mark of the camshaft timing gear assembly and camshaft timing sprocket are located as shown in the illustration. If not, turn the crankshaft 1 revolution (360°) to align the timing marks as shown in the illustration.
(c) Place paint marks on the chain sub-assembly in alignment with the timing marks on the camshaft timing gear assembly and camshaft timing sprocket.
14. REMOVE TIMING CHAIN COVER PLATE
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15. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY
| (a) Turn the crankshaft approximately 10° clockwise. |
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| (b) Turn the crankshaft approximately 10° counterclockwise. |
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| (c) Align the holes of the stopper plate and No. 1 chain tensioner assembly, and insert a pin into the stopper plate hole to lock the No. 1 chain tensioner assembly. |
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| (d) Turn the crankshaft approximately 10° clockwise. |
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| (e) Remove the 2 bolts, No. 1 chain tensioner assembly and gasket. NOTICE: Make sure not to drop the gasket inside the timing chain cover assembly. |
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| (f) Turn the crankshaft approximately 10° counterclockwise. |
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16. REMOVE TIMING CHAIN GUIDE
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17. REMOVE TIMING CHAIN COVER TIGHT PLUG
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18. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY
| (a) Hold the hexagonal portion of the camshaft with a wrench and remove the bolt from the camshaft. NOTICE: Be careful not to damage the camshaft housing sub-assembly or spark plug tube with the wrench. |
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| (b) Separate the camshaft timing gear assembly from the camshaft. |
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| (c) Remove the chain sub-assembly from the camshaft timing gear assembly, and turn the camshaft timing gear assembly approximately 180°. |
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| (d) Remove the camshaft timing gear assembly. NOTICE: Do not disassemble the camshaft timing gear assembly. |
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19. REMOVE CAMSHAFT BEARING CAP
| (a) Using several steps, remove the 11 bearing cap bolts in the sequence shown in the illustration. |
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| (b) Using several steps, remove the 10 bearing cap bolts in the sequence shown in the illustration. |
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(c) Remove the 5 camshaft bearing caps.
HINT:
Arrange the removed parts in the correct order.
20. REMOVE CAMSHAFT
| (a) Remove the camshaft from the camshaft housing sub-assembly. |
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21. REMOVE NO. 2 CAMSHAFT
| (a) Hold up the chain sub-assembly and remove the No. 2 camshaft from the camshaft housing sub-assembly. |
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| (b) Suspend the chain sub-assembly with a string or equivalent as shown in the illustration. NOTICE: Be careful not to drop the chain sub-assembly inside the timing chain cover assembly. |
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22. REMOVE CAMSHAFT TIMING SPROCKET
(a) Secure the No. 2 camshaft between aluminum plates in a vise.
NOTICE:
Do not damage the No. 2 camshaft.
| (b) Remove the bolt and camshaft timing sprocket. NOTICE: Be careful not to damage the No. 2 camshaft and camshaft timing sprocket. |
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23. REMOVE OIL CONTROL VALVE FILTER
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24. REMOVE NO. 1 CAMSHAFT BEARING
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25. REMOVE NO. 2 CAMSHAFT BEARING
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Precaution
PRECAUTION HINT:
Any digits beyond the 0.01 mm (1/1000 in.) place for standard, minimum and maximum values should be used as a reference only.
When both standard and maximum or minimum values are
Components
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Purge Valve
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