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

INSTALLATION

PROCEDURE

1. INSTALL VACUUM PUMP ASSEMBLY

(a) When using a new vacuum pump assembly:

(1) Apply engine oil to the No. 2 O-ring and No. 3 O-ring which are installed to a new vacuum pump assembly.

*1	No. 2 O-ring
*2	No. 3 O-ring
	Engine oil

(b) When reusing the vacuum pump assembly:

(1) Apply engine oil to a new No. 2 O-ring and No. 3 O-ring and install them to the vacuum pump assembly.

*1	No. 2 O-ring
*2	No. 3 O-ring
	Engine oil

(c) Apply engine oil to the inner surface of the installation hole.

(d) Install the vacuum pump assembly so that the oil pipe engages with the hole of the camshaft and the coupling teeth with the grooves on the camshaft tip. NOTICE: Ensure that the vacuum pump assembly is installed securely. Be careful not to pinch the O-ring.

*a Coupling Teeth *b Groove

(e) Install the vacuum pump assembly with the 3 bolts. Torque: 21 N·m {214 kgf·cm, 15 ft·lbf} NOTICE: After installation, check that there are no gaps between the matching surfaces and that the vacuum pump assembly is not installed at an angle.

2. INSTALL ENGINE WIRE

(a) Install the engine wire with the bolt and nut.

	Bolt
	Nut

Torque:

8.35 N·m {85 kgf·cm, 74 in·lbf}

(b) Install the 3 bolts and nut.

	Connector
	Bolt
	Nut

Torque:

Bolt :

19.1 N·m {195 kgf·cm, 14 ft·lbf}

Nut :

9.8 N·m {100 kgf·cm, 87 in·lbf}

(c) Connect the 3 connectors.

(d) Install the 2 nuts. Torque: 8.35 N·m {85 kgf·cm, 74 in·lbf}

(e) Engage the 2 clamps.

(f) Install the bolt.

	Connector
	Bolt

Torque:

8.35 N·m {85 kgf·cm, 74 in·lbf}

(g) Connect the 5 connectors.

(h) Install the 2 bolts.

	Connector
	Bolt

Torque:

8.35 N·m {85 kgf·cm, 74 in·lbf}

(i) Engage the 2 clamps and claw.

(j) Connect the 8 connectors.

(k) Install the bolt.

	Connector
	Bolt

Torque:

8.35 N·m {85 kgf·cm, 74 in·lbf}

(l) Engage the clamp.

(m) Connect the 2 connectors.

3. INSTALL NO. 2 ENGINE UNDER COVER

Click here

4. CONNECT VACUUM HOSE SUB-ASSEMBLY

(a) Connect the vacuum hose sub-assembly.

5. CONNECT HEATER WATER HOSE

(a) Connect the inlet heater water hose and outlet heater water hose, and slide the 2 clips to secure them.

*1 Inlet Heater Water Hose *2 Outlet Heater Water Hose

(b) Engage the clamp.

6. CONNECT VENTILATION HOSE

(a) Connect the ventilation hose, and slide the clip to secure it.

7. CONNECT AIR TUBE

(a) Connect the air tube to the vacuum pump assembly, and slide the clip to secure it.

8. INSTALL TRANSMISSION CONTROL CABLE ASSEMBLY

(a) Install a new clip to the No. 1 transmission control cable bracket.

(b) Connect the transmission control cable assembly to the No. 1 transmission control cable bracket. NOTICE: Make sure that the claws (A) of the clip are securely fit into the bracket holes. Make sure that the transmission control cable assembly is securely installed inside of the claws (B) of the clip.

*1 Transmission Control Cable Assembly *2 No. 1 Transmission Control Cable Bracket *a Claw (A) *b Claw (B)

(c) Connect the transmission control cable assembly to the transmission control shaft lever with the nut.

Torque:

12 N·m {122 kgf·cm, 9 ft·lbf}

9. INSTALL AIR CLEANER BRACKET

Click here

10. INSTALL AIR CLEANER CASE SUB-ASSEMBLY

Click here

11. INSTALL AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

Click here

12. INSTALL INLET AIR CLEANER ASSEMBLY

Click here

13. INSTALL V-BANK COVER SUB-ASSEMBLY

Click here

14. INSTALL COOL AIR INTAKE DUCT SEAL

Click here

15. INSTALL FRONT WHEEL LH

Click here

16. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

17. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY

Click here

18. INSPECT VACUUM PUMP OPERATION

Click here