Installation [03/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- INSTALL NO. 3 EXHAUST MANIFOLD HEAT INSULATOR
Torque: 16 N.m (163 kgf/cm, 12 ft.lbf)
- INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE
- Apply a light coat of engine oil to a new O-ring.
- Install the O-ring to the engine oil level dipstick guide.
- Using an 8 mm socket wrench, install the engine oil level dipstick guide to the camshaft housing sub-assembly with the bolt.
Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
- Install the engine oil level dipstick.
- INSTALL IGNITION COIL ASSEMBLY
Refer to PROCEDURE - Step 2 - INSTALL FUEL INJECTOR SEAL
Refer to PROCEDURE - Step 1 - INSTALL INJECTOR VIBRATION INSULATOR
Refer to PROCEDURE - Step 2 - INSTALL C-RING
Refer to PROCEDURE - Step 3 - INSTALL NO. 1 FUEL INJECTOR BACK-UP RING
Refer to PROCEDURE - Step 4 - INSTALL NO. 3 FUEL INJECTOR BACK-UP RING
Refer to PROCEDURE - Step 5 - INSTALL NOZZLE HOLDER CLAMP
- INSTALL DIRECT FUEL INJECTOR ASSEMBLY
Refer to PROCEDURE - Step 7 - INSTALL FUEL DELIVERY PIPE
Refer to PROCEDURE - Step 8 - INSTALL PORT FUEL INJECTOR ASSEMBLY
Refer to PROCEDURE - Step 1 - INSTALL NO. 5 ENGINE WIRE
- INSTALL INJECTOR VIBRATION INSULATOR
- INSTALL NO. 1 DELIVERY PIPE SPACER
Refer to PROCEDURE - Step 4 - INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 5 - INSTALL WIRE HARNESS CLAMP BRACKET
- INSTALL NO. 6 ENGINE WIRE
Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
- INSTALL SENSOR WIRE
- INSTALL NO. 7 WATER BY-PASS HOSE
- INSTALL FUEL PUMP LIFTER ASSEMBLY
Refer to PROCEDURE - Step 1 - INSTALL FUEL PUMP SPACER GASKET
- TEMPORARILY INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY
Refer to PROCEDURE - Step 3 - TEMPORARILY INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 4 - INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY
Refer to PROCEDURE - Step 5 - INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 6
- CONNECT FUEL TUBE SUB-ASSEMBLY
Refer to PROCEDURE - Step 7 - INSTALL FUEL PIPE CLAMP
- INSTALL NO. 1 INTAKE MANIFOLD TO HEAD GASKET
- INSTALL INTAKE MANIFOLD
Refer to PROCEDURE - Step 4 - INSTALL NO. 2 WATER BY-PASS PIPE
- INSTALL NO. 3 WATER BY-PASS PIPE
- SET EGR VALVE ASSEMBLY
Refer to PROCEDURE - Step 1 - CONNECT NO. 8 WATER BY-PASS HOSE
- CONNECT NO. 4 WATER BY-PASS HOSE
- INSTALL NO. 1 EGR COOLER GASKET
Refer to PROCEDURE - Step 3 - INSTALL EGR VALVE GASKET
Refer to PROCEDURE - Step 4 - INSTALL EGR COOLER ASSEMBLY
Refer to PROCEDURE - Step 5 - CONNECT NO. 4 WATER BY-PASS HOSE
- CONNECT NO. 3 WATER BY-PASS HOSE
- INSTALL EGR VALVE ASSEMBLY
Refer to PROCEDURE - Step 9 - INSTALL EGR INLET GASKET
- INSTALL EGR VALVE ADAPTER GASKET
- INSTALL NO. 1 EGR PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 12 - INSTALL THROTTLE BODY GASKET
Refer to PROCEDURE - Step 1 - CONNECT NO. 6 WATER BY-PASS HOSE
Refer to PROCEDURE - Step 2 - INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY
Refer to PROCEDURE - Step 3 - CONNECT NO. 5 WATER BY-PASS HOSE
Refer to PROCEDURE - Step 4 - INSTALL EXHAUST MANIFOLD TO HEAD GASKET
- INSTALL EXHAUST MANIFOLD (TWC: Front Catalyst)
Refer to PROCEDURE - Step 3 - INSTALL MANIFOLD STAY
Refer to PROCEDURE - Step 6 - INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
- INSTALL FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY)
*a Paint Mark *b 45° (Claw of Clip Location) *c Upper Side *d Front of Engine *e 2.0 to 7.0 mm (0.0787 to 0.276 in.) - - - Install the water hose clamp bracket with the 2 bolts as shown in the illustration.
Torque: 13 N.m (133 kgf/cm, 10 ft.lbf)
NOTE:Temporarily tighten the bolt (A), and then fully tighten the 2 bolts in the order of (B) and (A).
- Connect the flow shutting valve (water by-pass hose assembly) to the water by-pass outlet and slide the clip to secure it.NOTE:
- Make sure to slide the flow shutting valve (water by-pass hose assembly) until it contacts the hose stopper of the water by-pass outlet.
- Make sure that the claws of the clip are within the location shown in the illustration.
- Install the flow shutting valve (water by-pass hose assembly) with the bolt.
Torque: 19 N.m (194 kgf/cm, 14 ft.lbf)
- Install the water hose clamp bracket with the 2 bolts as shown in the illustration.
- INSTALL NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY
*a 45° (Claw of Clip Location) *b Paint Mark *c Upper Side *d Front of Engine *e 2.0 to 7.0 mm (0.0787 to 0.276 in.) - - - Connect the No. 2 water by-pass pipe sub-assembly to the water by-pass outlet and slide the clip to secure it.NOTE:
- Make sure to slide the No. 2 water by-pass pipe sub-assembly until it contacts the hose stopper of the water by-pass outlet.
- Make sure that the claws of the clip are within the location shown in the illustration.
- Install the No. 2 water by-pass pipe sub-assembly with the bolt.
Torque: 19 N.m (194 kgf/cm, 14 ft.lbf)
- Connect the No. 2 water by-pass pipe sub-assembly to the water by-pass outlet and slide the clip to secure it.
- INSTALL COMPRESSOR WITH MOTOR ASSEMBLY
Bolt Nut - Using an E8 "TORX" socket wrench, temporarily install the compressor with motor assembly with the 2 stud bolts.
Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
- Install the compressor with motor assembly with the bolt and 2 nuts in the order shown in the illustration.
Torque: 24.5 N.m (250 kgf/cm, 18 ft.lbf)
- Using an E8 "TORX" socket wrench, temporarily install the compressor with motor assembly with the 2 stud bolts.
- INSTALL DRIVE SHAFT BEARING BRACKET
Torque: 63.7 N.m (650 kgf/cm, 47 ft.lbf)