Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Installation

INSTALLATION

PROCEDURE

1. INSTALL STUD BOLT

NOTICE:

If a stud bolt is deformed or its threads are damaged, replace it.

(a) Using an 8 mm socket wrench, install the stud bolt to the front No. 1 engine mounting bracket LH. Torque: 10 N·m {102 kgf·cm, 7 ft·lbf}

2. INSTALL RADIATOR PIPE CLAMP

(a) Install the radiator pipe clamp to the camshaft housing sub-assembly LH with the bolt.

Torque:

5.5 N·m {56 kgf·cm, 49 in·lbf}

3. INSTALL WIRE HARNESS CLAMP BRACKET

(a) Install the wire harness clamp bracket to the camshaft housing sub-assembly with the bolt.

Torque:

13 N·m {133 kgf·cm, 10 ft·lbf}

4. INSTALL NO. 1 EXHAUST PIPE SUPPORT BRACKET

(a) Install the No. 1 exhaust pipe support bracket to the oil pan sub-assembly with the 2 bolts.

Torque:

21 N·m {214 kgf·cm, 15 ft·lbf}

5. INSTALL DRIVE SHAFT BEARING BRACKET (for 2WD)

(a) Install the drive shaft bearing bracket to the cylinder block sub-assembly with the 3 bolts.

Torque:

63.7 N·m {650 kgf·cm, 47 ft·lbf}

NOTICE:

Make sure that there is no oil on the threads of the bolts.

6. INSTALL NO. 2 TRANSFER STIFFENER PLATE (for AWD)

(a) Install the No. 2 transfer stiffener plate to the cylinder block sub-assembly with the 3 bolts.

Torque:

64 N·m {653 kgf·cm, 47 ft·lbf}

7. INSTALL NO. 5 CYLINDER BLOCK INSULATOR (w/ Oil Cooler)

(a) Install the No. 5 cylinder block insulator to the engine assembly. NOTICE: Make sure that the No. 5 cylinder block insulator is not covering any fastener surface.

*a Fastner Surface

8. INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE

(a) Install a new engine oil level dipstick guide O-ring to the engine oil level dipstick guide.

(b) Apply a light coat of engine oil to the engine oil level dipstick guide O-ring.

(c) Insert the engine oil level dipstick guide end into the oil pan sub-assembly.

(d) Install the engine oil level dipstick guide to the camshaft housing sub-assembly LH with the bolt.

Torque:

21 N·m {214 kgf·cm, 15 ft·lbf}

(e) Install the engine oil level dipstick to the engine oil level dipstick guide.

9. INSTALL WATER PUMP PULLEY

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10. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY

(a) Install the V-ribbed belt tensioner assembly with the 2 bolts.

Torque:

43 N·m {438 kgf·cm, 32 ft·lbf}

11. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY

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12. INSTALL NO. 1 COMPRESSOR MOUNTING BRACKET

(a) Install the No. 1 compressor mounting bracket to the cylinder block sub-assembly with the 2 bolts. Torque: 43 N·m {438 kgf·cm, 32 ft·lbf} NOTICE: Temporarily tighten the bolt (A), and then fully tighten the 2 bolts in the order of (B) and (A).

13. INSTALL COMPRESSOR AND MAGNETIC CLUTCH

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14. INSTALL GENERATOR ASSEMBLY

15. INSTALL V-RIBBED BELT

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16. INSTALL NO. 2 VENTILATION HOSE

(a) Install the No. 2 ventilation hose to the cylinder head cover sub-assembly and slide the clip to secure it.

17. INSTALL VENTILATION HOSE

(a) Install the ventilation hose to the PCV valve (ventilation valve sub-assembly) and slide the clip to secure it.

18. INSTALL NO. 2 WATER BY-PASS HOSE

(a) Install the No. 2 water by-pass hose to the water outlet and slide the clip to secure it.

19. INSTALL NO. 3 WATER BY-PASS HOSE

(a) Install the No. 3 water by-pass hose to the water inlet pipe and slide the clip to secure it.

20. INSTALL VACUUM PUMP ASSEMBLY

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21. INSTALL IGNITION COIL ASSEMBLY

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22. INSTALL SENSOR WIRE

(a) Engage the 2 clamps and install the sensor wire to the water inlet pipe with the bolt.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

23. INSTALL KNOCK CONTROL SENSOR

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