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Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. 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 [03/2022 - ] (1 Of 6)
GTY1076991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
1 SPARK PLUG 19100P See step  1 - -
2 KNOCK CONTROL SENSOR 89615 See step  2 - -
3 ENGINE COOLANT TEMPERATURE SENSOR 89422A See step  3 - -
4 STRAIGHT SCREW PLUG - - - -
5 OIL PRESSURE AND TEMPERATURE SENSOR 89448D See step  5 - -
6 OIL PRESSURE CONTROL VALVE ASSEMBLY 15250 See step  6 - -
7 TIMING GEAR COVER INSULATOR 11336A See step  7 - -
8 CAM TIMING OIL CONTROL SOLENOID ASSEMBLY 15370 See step  8 - -
9 CAM TIMING OIL CONTROL SOLENOID O-RING 15370A See step  9 - -
10 CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY 13090D See step  10 - -
11 CAM TIMING CONTROL MOTOR O-RING 13090E - - -
12 WATER INLET WITH THERMOSTAT SUB-ASSEMBLY 16031 See step  12 - -
13 ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING) 16032 - - -
14 OIL FILLER CAP SUB-ASSEMBLY 12108 - - -
15 OIL FILLER CAP GASKET 12108A - - -
16 CRANKSHAFT POSITION SENSOR 11401G See step  16 - -
17 PCV VALVE (VENTILATION VALVE SUB-ASSEMBLY) 12204C - - -
18 DISCONNECT NO. 1 WATER BY-PASS HOSE 16261Z - - -
19 DISCONNECT NO. 2 WATER BY-PASS HOSE 16264D - - -
20 OIL COOLER ASSEMBLY 15710 - - -
21 OIL COOLER GASKET 15785 - - -
22 OIL CONTROL VALVE FILTER 15678 - - -
23 REMOVE NO. 1 WATER BY-PASS HOSE 16261Z - - -
24 REMOVE NO. 2 WATER BY-PASS HOSE 16264D - - -
*A w/ Filter - -
• Non-reusable part * Precoated part
Fig 2: Engine Unit Disassembly Components [03/2022 - ] (2 Of 6)
GTY1076186Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
25 CRANKSHAFT PULLEY ASSEMBLY 13470 See step  25 - -
26 WATER OUTLET 16331 See step  26 - -
27 WATER OUTLET GASKET 16341 - - -
28 WATER BY-PASS OUTLET 16305E See step  28 - -
29 WATER OUTLET PIPE GASKET 16345 - - -
30 CAMSHAFT POSITION SENSOR (for Intake Side) 11102A See step  30 - -
31 CAMSHAFT POSITION SENSOR (for Exhaust Side) 11102A See step  31 - -
32 CYLINDER HEAD COVER SUB-ASSEMBLY 11201 See step  32 - -
33 SPARK PLUG TUBE GASKET 11193 See step  33 - -
34 ENGINE MOUNTING BRACKET RH 12315A See step  34 - -
35 ENGINE MOUNTING INSULATOR RH 12362 - - -
36 STRAIGHT SCREW PLUG - See step  36 - -
37 NO. 2 TIMING CHAIN COVER ASSEMBLY 11320B See step  37 - -
38 TIMING CHAIN COVER OIL SEAL 11301C See step  38 - -
39 SET NO. 1 CYLINDER TO TDC (COMPRESSION) - See step  39 - -
*1 CRANKSHAFT PULLEY BOLT - -
• Non-reusable part * Precoated part
Fig 3: Engine Unit Disassembly Components [03/2022 - ] (3 Of 6)
GTY1132924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
40 OIL PUMP DRIVE CHAIN SUB-ASSEMBLY 13507A See step  40 - -
41 CAMSHAFT TIMING GEAR ASSEMBLY 13050 See step  41 - -
42 CHAIN SUB-ASSEMBLY 13506 - - -
43 NO. 1 CHAIN TENSIONER ASSEMBLY 13540 See step  43 - -
44 CHAIN TENSIONER SLIPPER 13559 - - -
45 NO. 1 CHAIN VIBRATION DAMPER 13561 - - -
46 CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 13070A See step  46 - -
47 TIMING CHAIN COVER ASSEMBLY 11310 See step  47 - -
48 OIL NOZZLE VALVE SUB-ASSEMBLY 15703A - - -
49 CRANKSHAFT TIMING GEAR KEY 13471A See step  49 - -
*A Type A *B Type B
*1 CHAIN TENSIONER PLATE *2 CHAIN DAMPER SPRING
*3 OIL PUMP DRIVE SPROCKET *4 OIL PUMP DRIVE SHAFT SPROCKET
*5 CAMSHAFT TIMING VALVE ASSEMBLY *6 CRANKSHAFT TIMING SPROCKET
Fig 4: Engine Unit Disassembly Components [03/2022 - ] (4 Of 6)
GTY1075189Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
50 FUEL PUMP LIFTER GUIDE 23477 See step  50 - -
51 CAMSHAFT HOUSING SUB-ASSEMBLY 11103 See step  51 - -
52 CAMSHAFT BEARING CAP - See step  52 - -
53 CAMSHAFT 13511 - - -
54 NO. 2 CAMSHAFT 13512 - - -
55 WIRE HARNESS CLAMP BRACKET - See step  55 - -
56 NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 13801 - - -
57 VALVE LASH ADJUSTER ASSEMBLY 13750 - - -
58 VALVE STEM CAP 13716 - - -
59 WATER BY-PASS PIPE SUB-ASSEMBLY 16206 See step  59 - -
60 WATER BY-PASS PIPE GASKET 16258C - - -
61 CYLINDER HEAD SUB-ASSEMBLY 11101 See step  61 - -
62 CYLINDER HEAD GASKET 11115 - - -
63 CYLINDER BLOCK WATER JACKET SPACER 11445 See step  63 - -
*1 CYLINDER HEAD SET BOLT *2 PLATE WASHER
*3 NO. 1 CAMSHAFT BEARING CAP *4 NO. 2 CAMSHAFT BEARING CAP
*5 NO. 3 CAMSHAFT BEARING CAP *6 NO. 4 CAMSHAFT BEARING CAP
• Non-reusable part - -
Fig 5: Engine Unit Disassembly Components [03/2022 - ] (5 Of 6)
GTY1075550Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
64 OIL FILTER SUB-ASSEMBLY 15601 - - -
65 OIL PAN DRAIN PLUG 12101A - - -
66 OIL FILTER UNION 15600A See step  66 - -
67 NO. 2 OIL PAN SUB-ASSEMBLY 12102A See step  67 - -
68 OIL STRAINER SUB-ASSEMBLY 15104 See step  68 - -
69 ENGINE OIL LEVEL SENSOR 89491 See step  69 - -
70 OIL PUMP BRACKET 15167 - - -
71 INSPECT CRANKSHAFT BACKLASH 13620B See step  71 - -
72 ENGINE BALANCER ASSEMBLY 13620B See step  72 - -
73 OIL PUMP ASSEMBLY 15100 - - -
74 STIFFENING CRANKCASE ASSEMBLY 11420 See step  74 - -
75 STRAIGHT SCREW PLUG - See step  75 - -
76 WIRE HARNESS CLAMP BRACKET - See step  76 - -
77 REAR ENGINE OIL SEAL 11401L - - -
• Non-reusable part - -
Fig 6: Engine Unit Disassembly Components [03/2022 - ] (6 Of 6)
GTY1077343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
78 STUD BOLT - See step  78 - -
79 RING PIN - See step  79 - -
80 STRAIGHT PIN - See step  80 - -
*A w/ Stud Bolt - -
• Non-reusable part - -
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