CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the camshaft removal/installation are shown below.
| Replacement Part or Procedure | Necessary Procedures | Effects/Inoperative when not Performed | Link |
|---|---|---|---|
| Replacement of injector assembly |
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Engine starting |
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Perform initialization | - |
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CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
Note
When replacing the parts in the following chart (A), replace the No. 1 injection pipe sub-assembly, No. 2 injection pipe sub-assembly and/or fuel inlet pipe sub-assembly with new ones.
| Replaced Parts (A) | Pipes Requiring New Replacement |
|---|---|
| Injector assembly (including shuffling the injector assemblies between the cylinders) |
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After removing the No. 1 injection pipe sub-assembly, No. 2 injection pipe sub-assembly and/or fuel inlet pipe sub-assembly, clean them with a brush and compressed air.
The injector assembly is a precision instrument. Do not use the injector assembly if it is struck or dropped.
Make sure foreign matter does not enter the fuel path.
PROCEDURE
PRECAUTION
Note
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
Note
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY (for 4WD and Pre-Runner)
DRAIN ENGINE COOLANT
REMOVE FRONT BUMPER
REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY
REMOVE NO. 1 RADIATOR AIR GUIDE
REMOVE NO. 4 AIR HOSE
REMOVE NO. 2 AIR TUBE
REMOVE NO. 1 RADIATOR HOSE
DISCONNECT VANE PUMP OIL RESERVOIR ASSEMBLY
REMOVE NO. 1 OIL RESERVOIR BRACKET
REMOVE RADIATOR RESERVE TANK ASSEMBLY
DISCONNECT NO. 1 OIL COOLER OUTLET HOSE (for Automatic Transmission)
DISCONNECT NO. 1 OIL COOLER INLET HOSE (for Automatic Transmission)
REMOVE FAN SHROUD
DISCONNECT NO. 2 RADIATOR HOSE
REMOVE RADIATOR ASSEMBLY
REMOVE NO. 4 AIR HOSE
REMOVE INTERCOOLER AIR TUBE
REMOVE DIESEL THROTTLE BODY ASSEMBLY
REMOVE NO. 2 WATER BY-PASS PIPE
REMOVE NO. 1 FUEL PIPE (w/ DPF)
REMOVE GAS FILTER
REMOVE TURBO PRESSURE SENSOR
REMOVE NO. 2 HOSE TO HOSE TUBE
REMOVE NO. 2 ENGINE COVER BRACKET
DISCONNECT FUEL FILTER ASSEMBLY
DISCONNECT UREA TANK FILLER PIPE ASSEMBLY (w/ Urea SCR System)
REMOVE NO. 1 UREA TANK FILLER PIPE SUPPORT (w/ Urea SCR System)
DISCONNECT ENGINE WIRE
REMOVE EGR VALVE BRACKET
REMOVE NO. 2 EGR PIPE
DISCONNECT NO. 3 WATER BY-PASS PIPE SUB-ASSEMBLY
REMOVE NO. 4 WATER BY-PASS PIPE SUB-ASSEMBLY
REMOVE EGR PIPE WITH COOLER SUB-ASSEMBLY (w/ DPF)
REMOVE NO. 1 EGR PIPE SUB-ASSEMBLY (w/o DPF)
REMOVE VACUUM CONTROL VALVE SET
REMOVE NO. 1 EGR COOLER AND NO. 2 EGR VALVE ASSEMBLY WITH ELECTRIC EGR CONTROL VALVE ASSEMBLY
REMOVE WIRING HARNESS CLAMP BRACKET
REMOVE HARNESS BRACKET
REMOVE NOZZLE LEAKAGE PIPE ASSEMBLY
REMOVE NO. 1 INJECTION PIPE SUB-ASSEMBLY AND NO. 2 INJECTION PIPE SUB-ASSEMBLY
REMOVE INJECTOR ASSEMBLY
REMOVE NOZZLE HOLDER GASKET
REMOVE CAMSHAFT POSITION SENSOR
REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
SET NO. 1 CYLINDER TO TDC/COMPRESSION
| *a | Timing Mark |
| *b | Paint Mark |
Align the timing mark of the crankshaft pulley and timing chain cover by rotating the crankshaft clockwise.
Make sure that the timing mark of the camshaft timing sprocket is at the top.
Tech Tips
If the timing mark is not at the top, turn the crankshaft pulley 1 revolution so that the timing mark is at the top (set the No. 1 piston to TDC/compression).
Place paint marks on the No. 2 chain sub-assembly.
REMOVE NO. 3 CAMSHAFT BEARING CAP
Remove the 2 bolts and No. 3 camshaft bearing cap from the cylinder head sub-assembly.
REMOVE VACUUM PUMP ASSEMBLY
REMOVE CAMSHAFT OIL SEAL RETAINER
REMOVE TIMING CHAIN GUIDE
Remove the bolt and timing chain guide from the cylinder head sub-assembly.
REMOVE CAMSHAFT
Remove the oil pump relief valve plug and gasket from timing chain cover.
| *a | Stopper Plate |
| *b | Pin |
Insert a pin into stopper plate hole of the No. 2 chain tensioner assembly and lock the No. 2 chain tensioner assembly.
| *1 | No. 1 Camshaft |
| *2 | No. 2 Camshaft |
Hold the hexagonal portion of the camshaft with a wrench and loosen the 2 bolts from the No. 1 camshaft and No. 2 camshaft.
Note
Be careful not to damage the cylinder head sub-assembly with the wrench.
Using several steps and remove the 20 bolts, No. 1 camshaft bearing cap and 8 No. 2 camshaft bearing caps from the cylinder head sub-assembly.
Raise the No. 1 camshaft and remove the bolt from the No. 1 camshaft.
Raise the No. 2 camshaft and remove the bolt from the No. 2 camshaft.
Remove the No. 2 camshaft from the camshaft timing sprocket.
Remove the camshaft timing sprocket from the No. 2 chain sub-assembly.
Remove the No. 1 camshaft from the camshaft timing sprocket.
Remove the camshaft timing sprocket from the No. 2 chain sub-assembly.
Suspend the No. 2 chain sub-assembly with a string or equivalent.
Tech Tips
Be careful not to drop the No. 2 chain sub-assembly inside the timing chain cover assembly.