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                        | Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001Q5A5 |  
                        | Model Year Start: 2021 | Model: Avalon | Prod Date Range: [08/2020 -                    
                                       ] |  
                        | Title: A25A-FKS (ENGINE MECHANICAL): CYLINDER HEAD GASKET: INSTALLATION; 2021 - 2022 MY Avalon [08/2020 -        ] |  INSTALLATIONCAUTION / NOTICE / HINTNOTICE: This procedure includes the installation of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts. Click here
                        
                           
                              ![2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION](/t3Portal/stylegraphics/info.gif)  PROCEDURE1. INSTALL CYLINDER HEAD GASKET (a) Clean the cylinder block sub-assembly and cylinder head sub-assembly with solvent. (b) Place a new cylinder head gasket on the cylinder block sub-assembly as shown in the illustration.   
                     
                        
                        
                     
                     
                        
                           | *a | Lot No. |  
                           |   | Front of Engine |  NOTICE: Make sure that the cylinder head gasket is installed in the correct orientation. 2. INSTALL CYLINDER HEAD SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  3. INSTALL NO. 2 CAMSHAFT Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  4. INSTALL CAMSHAFT Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  5. INSTALL CAMSHAFT BEARING CAP Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  6. INSTALL VALVE STEM CAP Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  7. INSTALL VALVE LASH ADJUSTER ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  8. INSTALL NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  9. INSTALL CAMSHAFT HOUSING SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  10. INSTALL FUEL PUMP LIFTER GUIDE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  11. INSTALL TIMING CHAIN COVER ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  12. INSTALL CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  13. SET NO. 1 CYLINDER TO TDC (COMPRESSION) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  14. INSTALL NO. 1 CHAIN VIBRATION DAMPER Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  15. INSTALL CHAIN TENSIONER SLIPPER Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  16. INSTALL NO. 1 CHAIN TENSIONER ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  17. INSTALL CHAIN SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  18. INSTALL CAMSHAFT TIMING GEAR ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  19. INSTALL OIL PUMP DRIVE CHAIN SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  20. SET NO. 1 CYLINDER TO TDC (COMPRESSION) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: DISASSEMBLY+](/t3Portal/stylegraphics/info.gif)  21. INSTALL NO. 2 TIMING CHAIN COVER ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  22. INSTALL TIMING CHAIN COVER OIL SEAL Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): FRONT CRANKSHAFT OIL SEAL: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  23. INSTALL SPARK PLUG TUBE GASKET Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  24. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  25. INSTALL OUTLET WATER BY-PASS SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  26. INSTALL WATER OUTLET Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  27. INSTALL CRANKSHAFT PULLEY ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: REASSEMBLY+](/t3Portal/stylegraphics/info.gif)  28. INSTALL VACUUM PUMP ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; BRAKE SYSTEM (OTHER): VACUUM PUMP (for A25A-FKS): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  29. INSTALL CAM TIMING CONTROL MOTOR O-RING Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): CAMSHAFT TIMING CONTROL MOTOR: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  30. INSTALL CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): CAMSHAFT TIMING CONTROL MOTOR: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  31. INSTALL O-RING Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): CAMSHAFT OIL CONTROL SOLENOID: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  32. INSTALL CAM TIMING OIL CONTROL SOLENOID ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): CAMSHAFT OIL CONTROL SOLENOID: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  33. INSTALL OIL PRESSURE CONTROL VALVE ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (LUBRICATION): OIL PRESSURE SWITCHING VALVE: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  34. INSTALL PURGE VALVE (PURGE VSV) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (EMISSION CONTROL): PURGE VALVE: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  35. INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  36. INSTALL IGNITION COIL ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): IGNITION COIL AND SPARK PLUG: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  37. INSTALL FUEL INJECTOR SEAL Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  38. INSTALL DIRECT FUEL INJECTOR ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  39. INSTALL FUEL DELIVERY PIPE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  40. INSTALL PORT FUEL INJECTOR ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  41. INSTALL NO. 5 ENGINE WIRE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  42. INSTALL INJECTOR VIBRATION INSULATOR Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  43. INSTALL NO. 1 DELIVERY PIPE SPACER Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  44. INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  45. INSTALL NO. 7 WATER BY-PASS HOSE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  46. TEMPORARILY INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (for High Pressure) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL PUMP (for High Pressure): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  47. TEMPORARILY INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL PUMP (for High Pressure): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  48. INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (for High Pressure) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL PUMP (for High Pressure): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  49. INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  50. CONNECT FUEL TUBE SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (FUEL): FUEL PUMP (for High Pressure): INSTALLATION+](/t3Portal/stylegraphics/info.gif)  51. INSTALL NO. 1 INTAKE MANIFOLD TO HEAD GASKET Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (INTAKE / EXHAUST): INTAKE MANIFOLD: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  52. INSTALL INTAKE MANIFOLD Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (INTAKE / EXHAUST): INTAKE MANIFOLD: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  53. INSTALL NO. 2 WATER BY-PASS PIPE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  54. INSTALL NO. 3 WATER BY-PASS PIPE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  55. INSTALL EGR VALVE ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  56. INSTALL NO. 4 WATER BY-PASS HOSE Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  57. INSTALL NO. 1 EGR PIPE SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (EMISSION CONTROL): EGR VALVE: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  58. INSTALL NO. 1 EGR COOLER BRACKET Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  59. INSTALL EGR COOLER ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (EMISSION CONTROL): EGR COOLER: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  60. INSTALL THROTTLE BODY GASKET Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): THROTTLE BODY: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  61. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): THROTTLE BODY: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  62. INSTALL EXHAUST MANIFOLD (TWC: Front Catalyst) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (INTAKE / EXHAUST): EXHAUST MANIFOLD: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  63. INSTALL MANIFOLD STAY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (INTAKE / EXHAUST): EXHAUST MANIFOLD: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  64. INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (INTAKE / EXHAUST): EXHAUST MANIFOLD: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  65. INSTALL FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  66. INSTALL NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  67. INSTALL TIMING GEAR COVER INSULATOR Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  68. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  69. INSTALL NO. 2 ENGINE COVER Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  70. INSTALL COMPRESSOR ASSEMBLY WITH PULLEY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE UNIT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  71. INSTALL GENERATOR ASSEMBLY Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (BATTERY / CHARGING): GENERATOR: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  72. INSTALL V-RIBBED BELT Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; MAINTENANCE: A25A-FKS DRIVE BELT: INSTALLATION+](/t3Portal/stylegraphics/info.gif)  73. INSTALL ENGINE HANGERS Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+](/t3Portal/stylegraphics/info.gif)  74. REMOVE ENGINE ASSEMBLY FROM ENGINE STAND Click here
                        
                           
                              ![2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: INSTALLATION](/t3Portal/stylegraphics/info.gif)  |