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Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Refer to PRECAUTION [11/2021 - ]



COMPONENTS (DISASSEMBLY) 

Fig 1: Engine Unit Disassembly Components (1 Of 7)
GTY1074878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
1 SPARK PLUG 19100P See step  1 - -
2 OIL PRESSURE SENDER GAUGE ASSEMBLY 83520 See step  2 - -
3 ENGINE OIL TEMPERATURE SENSOR 89429F See step  3 - -
4 OIL PRESSURE CONTROL VALVE ASSEMBLY 15250 See step  4 - -
5 CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side) 15370 See step  5 - -
6 CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side) 15370 See step  6 - -
7 CAM TIMING OIL CONTROL SOLENOID O-RING 15370A See step  7 - -
8 OIL FILLER CAP SUB-ASSEMBLY 12108 - - -
9 OIL FILLER CAP GASKET 12108A - - -
10 VACUUM PUMP ASSEMBLY 29300 - - -
11 NO. 1 VACUUM PUMP O-RING 29343 - - -
• Non-reusable part * Precoated part
Fig 2: Engine Unit Disassembly Components (2 Of 7)
GTY1075674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
12 OIL COOLER ASSEMBLY 15710 - - -
13 OIL COOLER GASKET 15785 - - -
14 OIL COOLER PIPE GASKET 16258B - - -
15 FUEL DELIVERY PIPE SUB-ASSEMBLY 23807 See step  15 - -
16 DIRECT FUEL INJECTOR ASSEMBLY 23250E See step  16 - -
17 NOZZLE HOLDER CLAMP 23695A - - -
18 NO. 3 FUEL INJECTOR BACK-UP RING 23258 See step  18 - -
19 NO. 1 FUEL INJECTOR BACK-UP RING 23256 - - -
20 C-RING - - - -
21 INJECTOR VIBRATION INSULATOR 23291A - - -
22 FUEL INJECTOR SEAL 23255A See step  22 - -
*1 O-RING - -
• Non-reusable part - -
Fig 3: Engine Unit Disassembly Components (3 Of 7)
GTY1075459Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
23 CRANKSHAFT PULLEY ASSEMBLY 13470 See step  23 - -
24 CAMSHAFT POSITION SENSOR (for Intake Side) 11102A See step  24 - -
25 CAMSHAFT POSITION SENSOR (for Exhaust Side) 11102A See step  25 - -
26 CYLINDER HEAD COVER SUB-ASSEMBLY 11201 See step  26 - -
27 SPARK PLUG TUBE GASKET 11193 See step  27 - -
28 INJECTOR HOLDER SUB-ASSEMBLY 23095B - - -
29 ENGINE MOUNTING BRACKET RH 12315A See step  29 - -
30 STRAIGHT SCREW PLUG - See step  30 - -
31 NO. 2 TIMING CHAIN COVER ASSEMBLY 11320B See step  31 - -
32 TIMING CHAIN CASE OIL SEAL 11301C See step  32 - -
*1 CRANKSHAFT PULLEY BOLT *2 PLATE WASHER
• Non-reusable part * Precoated part
Fig 4: Engine Unit Disassembly Components (4 Of 7)
GTY1075941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
33 SET NO. 1 CYLINDER TO TDC (COMPRESSION) - See step  33 - -
34 OIL PUMP DRIVE CHAIN SUB-ASSEMBLY 13507A See step  34 - -
35 NO. 2 CHAIN VIBRATION DAMPER 13562 - - -
36 NO. 1 CHAIN TENSIONER ASSEMBLY 13540 See step  36 - -
37 CHAIN TENSIONER SLIPPER 13559 - - -
38 CHAIN SUB-ASSEMBLY 13506 - - -
39 NO. 1 CHAIN VIBRATION DAMPER 13561 - - -
40 CAMSHAFT TIMING GEAR ASSEMBLY 13050 See step  40 - -
41 CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 13070A See step  41 - -
42 TIMING CHAIN COVER ASSEMBLY 11310 See step  42 - -
43 OIL NOZZLE VALVE SUB-ASSEMBLY 15703A - - -
*1 CHAIN TENSIONER PLATE *2 CHAIN DAMPER SPRING
*3 OIL PUMP DRIVE SPROCKET *4 OIL PUMP DRIVE SHAFT SPROCKET
*5 CRANKSHAFT TIMING GEAR OR SPROCKET *6 INTAKE CAMSHAFT TIMING GEAR BOLT ASSEMBLY
*7 EXHAUST CAMSHAFT TIMING GEAR BOLT ASSEMBLY - -
Fig 5: Engine Unit Disassembly Components (5 Of 7)
GTY1075539Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
44 FUEL PUMP LIFTER GUIDE 23477 See step  44 - -
45 CAMSHAFT HOUSING SUB-ASSEMBLY 11103 See step  45 - -
46 CAMSHAFT BEARING CAP - See step  46 - -
47 INTAKE CAMSHAFT SUB-ASSEMBLY 13501A - - -
48 EXHAUST CAMSHAFT SUB-ASSEMBLY 13502B - - -
49 NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 13801 - - -
50 VALVE LASH ADJUSTER ASSEMBLY 13750 - - -
51 VALVE STEM CAP 13716 - - -
52 CYLINDER HEAD SUB-ASSEMBLY 11101 See step  52 - -
53 CYLINDER HEAD GASKET 11115 - - -
*1 NO. 1 CAMSHAFT BEARING CAP *2 NO. 2 CAMSHAFT BEARING CAP
*3 NO. 3 CAMSHAFT BEARING CAP *4 NO. 4 CAMSHAFT BEARING CAP
*5 NO. 5 CAMSHAFT BEARING CAP *6 CYLINDER HEAD SET BOLT
*7 PLATE WASHER - -
• Non-reusable part - -
Fig 6: Engine Unit Disassembly Components (6 Of 7)
GTY1075262Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
54 OIL FILTER SUB-ASSEMBLY 15601 - - -
55 OIL FILTER UNION 15600A See step  55 - -
56 OIL PAN DRAIN PLUG 12101A - - -
57 NO. 2 OIL PAN SUB-ASSEMBLY 12102A See step  57 - -
58 OIL STRAINER SUB-ASSEMBLY 15104 See step  58 - -
59 ENGINE OIL LEVEL SENSOR 89491 See step  59 - -
60 ENGINE BALANCER ASSEMBLY 13620B See step  60 - -
61 OIL PUMP ASSEMBLY 15100 - - -
62 STIFFENING CRANKCASE ASSEMBLY 11420 See step  62 - -
63 STRAIGHT SCREW PLUG - See step  63 - -
64 REAR ENGINE OIL SEAL 11401L See step  64 - -
• Non-reusable part - -
Fig 7: Engine Unit Disassembly Components (7 Of 7)
GTY1079775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
65 STUD BOLT - See step  65 - -
66 RING PIN - See step  66 - -
67 STRAIGHT PIN - See step  67 - -
• Non-reusable part - -
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