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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Stereo Component Amplifier Malfunction (B15A3)
DESCRIPTION These DTCs are stored when a malfunction occurs in the stereo component amplifier assembly. DTC No. Detection Item DTC Detection Condition Trouble Area B15A3 Stereo Component Amplifier Malfunction When one of the conditions below is met:
Internal power supply malfunct
Installation
INSTALLATION PROCEDURE 1. INSTALL ENGINE WATER PUMP ASSEMBLY (a) Install a new gasket and the engine water pump assembly with the 5 bolts in the order shown in the illustration. Torque: 10 N·m {102 kgf·cm, 7 ft·lbf} 2. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY (a) Using a 12 mm
