Lexus NX: Repair
REPAIR
PROCEDURE
1. REPAIR INTAKE VALVE SEAT
NOTICE:
- Repair the seat while checking the seating position.
- Keep the lip free of foreign matter.
- Take off the cutter gradually to make the intake valve seat smooth.
| (a) Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification. |
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| (b) Using 30° and 60° cutters, correct the valve seat so that the valve contacts the entire circumference of the seat. The contact should be in the center of the valve seat, and the valve seat width should be maintained within the specified range around the entire circumference of the seat. Standard width: 1.0 to 1.4 mm (0.0394 to 0.0551 in.) |
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(c) Hand-lap the valve and valve seat with an abrasive compound.
(d) Check the valve seating position.
2. REPAIR EXHAUST VALVE SEAT
NOTICE:
- Repair the seat while checking the seating position.
- Keep the lip free of foreign matter.
- Take off the cutter gradually to make the exhaust valve seat smooth.
| (a) Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification. |
|
| (b) Using 30° and 75° cutters, correct the valve seat so that the valve contacts the entire circumference of the seat. The contact should be in the center of the valve seat, and the valve seat width should be maintained within the specified range around the entire circumference of the seat. Standard width: 1.2 to 1.6 mm (0.0472 to 0.0630 in.) |
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(c) Hand-lap the valve and valve seat with an abrasive compound.
(d) Check the valve seating position.
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Components
COMPONENTS ILLUSTRATION *1 EGR COOLER ASSEMBLY *2 EGR VALVE ASSEMBLY *3 FUEL DELIVERY PIPE *4 INJECTOR VIBRATION INSULATOR *5 INTAKE MANIFOLD *6 NO. 1 EGR PIPE *7 N
Removal
REMOVAL PROCEDURE 1. REMOVE TIMING CHAIN COVER ASSEMBLY Click here 2. REMOVE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY Click here 3. REMOVE THROTTLE WITH MOTOR BODY ASSEMBLY Click here 4. REMOVE W
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Installation
INSTALLATION PROCEDURE 1. INSTALL LOWER RADIATOR SUPPORT (a) Install the 2 lower radiator supports to the fan shroud. 2. INSTALL RADIATOR SUPPORT CUSHION (a) Install the 2 radiator support cushions to the 2 radiator support sub-assemblies. 3. INSTALL RADIATOR ASSEMBLY (a) Install the radiator assemb
Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. REMOVE NO. 3 DECK BOARD SUB-ASSEMBLY Click here 2. REMOVE REAR DECK FLOOR BOX Click here 3. REMOVE DECK FLOOR BOX LH Click here 4. PRECAUTIO
