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 Click here.
REMOVE VACUUM PUMP ASSEMBLY
REMOVE AIR CLEANER CAP SUB-ASSEMBLY WITH HOSE
DISCONNECT NO. 1 FUEL HOSE SUB-ASSEMBLY
Slide the hose clip and disconnect the No. 1 fuel hose sub-assembly from the No. 2 nozzle leakage pipe.
DISCONNECT NOZZLE LEAKAGE PIPE ASSEMBLY
Slide the hose clip and disconnect the nozzle leakage pipe assembly from the No. 2 nozzle leakage pipe.
Disengage the clamp to separate the nozzle leakage pipe assembly from the hose clamp.
REMOVE NO. 2 NOZZLE LEAKAGE PIPE
REMOVE NO. 1 WIRING HARNESS HEAT INSULATOR
REMOVE WIRING HARNESS CLAMP BRACKET
REMOVE DIFFERENTIAL PRESSURE SENSOR ASSEMBLY
REMOVE NO. 2 ENGINE COVER BRACKET
REMOVE SENSOR BRACKET
SEPARATE ENGINE WIRE (for LHD)
Disconnect the 6 connectors as shown in the illustration.
Separate the wiring harness clamp bracket from the cylinder head cover sub-assembly.
Disengage the 2 clamps and separate the engine wire as shown in the illustration.
SEPARATE ENGINE WIRE (for RHD)
Disconnect the 6 connectors as shown in the illustration.
Separate the wiring harness clamp bracket from the cylinder head cover sub-assembly.
Disengage the clamp and separate the engine wire as shown in the illustration.
REMOVE WIRING HARNESS CLAMP BRACKET (for LHD)
Disconnect the vacuum hose from the wiring harness clamp bracket.
Remove the 2 bolts and 2 wiring harness clamp brackets from the cylinder head cover sub-assembly.
REMOVE WIRING HARNESS CLAMP BRACKET (for RHD)
Disconnect the vacuum hose from the wiring harness clamp bracket.
Remove the bolt and wiring harness clamp bracket from the cylinder head cover sub-assembly.
REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
CHECK VALVE CLEARANCE
Set the No. 1 cylinder to TDC/Compression.
Turn the crankshaft damper sub-assembly until the grooves of the crankshaft damper sub-assembly and timing chain cover assembly are aligned.
| *a | Timing Mark |
| *b | TDC Mark |
Check that the timing mark of the camshaft timing sprocket is in the position shown in the illustration.
Tech Tips
If not, turn the crankshaft damper sub-assembly 1 revolution (360°) to align the timing mark and sprocket as above.
Check the valve clearance of the No. 1 cylinder exhaust valve and the No. 2 cylinder intake valve.
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly.
| *1 | Camshaft |
| *a | No. 1 Cylinder Exhaust |
| *b | No. 2 Cylinder Intake |
| *c | Feeler Gauge |
| *d | View A |
| *e | Correct |
| *f | Incorrect |
| Valve clearance (cold) |
|---|
| 0.11 to 0.17 mm (0.004 to 0.007 in.) for intake |
| 0.14 to 0.20 mm (0.006 to 0.008 in.) for exhaust |
Note
Insert the feeler gauge into the center of the roller surface, parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw when using adjusting tools such as SST and a screwdriver.
Tech Tips
If the clearance is not as specified, record the out-of-specification measurement, and then adjust the valve clearance.
Check the valve clearance of the No. 1 cylinder intake valve and No. 3 cylinder exhaust valve.
Turn the crankshaft damper sub-assembly by a further 180° clockwise.
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly as shown in the illustration.
| *1 | Camshaft |
| *a | No. 1 Cylinder Intake |
| *b | No. 3 Cylinder Exhaust |
| *c | Feeler Gauge |
| *d | View A |
| *e | Correct |
| *f | Incorrect |
| Valve clearance (cold) |
|---|
| 0.11 to 0.17 mm (0.004 to 0.007 in.) for intake |
| 0.14 to 0.20 mm (0.006 to 0.008 in.) for exhaust |
Note
Insert the feeler gauge into the center of the roller surface, parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the out-of-specification measurement, and then adjust the valve clearance.
Check the valve clearances of the No. 3 cylinder intake valve and No. 4 cylinder exhaust valve.
Turn the crankshaft damper sub-assembly clockwise by a further 180°.
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly as shown in the illustration.
| *1 | Camshaft |
| *a | No. 3 Cylinder Intake |
| *b | No. 4 Cylinder Exhaust |
| *c | Feeler Gauge |
| *d | View A |
| *e | Correct |
| *f | Incorrect |
| Valve clearance (cold) |
|---|
| 0.11 to 0.17 mm (0.004 to 0.007 in.) for intake |
| 0.14 to 0.20 mm (0.006 to 0.008 in.) for exhaust |
Note
Insert the feeler gauge into the center of the roller surface, parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the out-of-specification measurement, and then adjust the valve clearance.
Check the valve clearances of the No. 2 cylinder intake valve and No. 4 cylinder intake valve.
Turn the crankshaft damper sub-assembly clockwise by a further 180°.
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly.
| *1 | Camshaft |
| *a | No. 2 Cylinder Exhaust |
| *b | No. 4 Cylinder Intake |
| *c | Feeler Gauge |
| *d | View A |
| *e | Correct |
| *f | Incorrect |
| Valve clearance (cold) |
|---|
| 0.11 to 0.17 mm (0.004 to 0.007 in.) for intake |
| 0.14 to 0.20 mm (0.006 to 0.008 in.) for exhaust |
Note
Insert the feeler gauge into the center of the roller surface, parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the out-of-specification measurement, and then adjust the valve clearance.
ADJUST VALVE CLEARANCE
| *1 | Valve Adjusting Screw |
| *2 | Valve Adjusting Nut |
Using SST and a screwdriver, loosen the valve adjusting nut while keeping the valve adjusting screw in position.
Adjust valve clearance (intake side).
| *1 | Valve Adjusting Screw |
| *2 | Valve Adjusting Nut |
| *a | Feeler Gauge |
Insert a feeler gauge (0.14 mm (0.006 in.)) between the camshaft and No. 1 valve rocker arm sub-assembly, and turn the valve adjusting screw to adjust it.
| Valve clearance (cold) |
|---|
| 0.14 mm (0.006 in.) |
| *1 | Valve Adjusting Screw |
| *2 | Valve Adjusting Nut |
| *a | Fulcrum Length of SST |
| *b | Fulcrum Length of Torque Wrench |
Using SST and a screwdriver, tighten the valve adjusting nut while keeping the valve adjusting screw in position.
Tech Tips
Calculate the torque wrench reading when changing the fulcrum length of the torque wrench Click here.
When using SST (fulcrum length of 150 mm (5.91 in.)) + torque wrench (fulcrum length of 300 mm (11.81 in.)): 13 N*m (133 kgf*cm, 10 ft.*lbf).
Adjust the valve clearance (exhaust side).
| Valve clearance (cold) |
|---|
| 0.17 mm (0.007 in.) |
Tech Tips
Perform the same procedure as for the intake valve clearance adjustment.
INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
INSTALL WIRING HARNESS CLAMP BRACKET (for LHD)
Install the 2 wiring harness clamp brackets to the cylinder head cover sub-assembly with the 2 bolts.
Connect the vacuum hose to the wiring harness clamp bracket.
INSTALL WIRING HARNESS CLAMP BRACKET (for RHD)
Install the wiring harness clamp bracket to the cylinder head cover sub-assembly with the bolt.
Connect the vacuum hose to the wiring harness clamp bracket.
CONNECT ENGINE WIRE (for LHD)
Engage the 2 clamps and connect the engine wire.
Connect the wiring harness clamp bracket to the cylinder head cover sub-assembly.
Connect the 6 connectors.
CONNECT ENGINE WIRE (for RHD)
Engage the clamp and connect the engine wire.
Connect the wiring harness clamp bracket to the cylinder head cover sub-assembly.
Connect the 6 connectors.
INSTALL SENSOR BRACKET
INSTALL NO. 2 ENGINE COVER BRACKET
INSTALL DIFFERENTIAL PRESSURE SENSOR ASSEMBLY
INSTALL WIRING HARNESS CLAMP BRACKET
INSTALL NO. 1 WIRING HARNESS HEAT INSULATOR
INSTALL NO. 2 NOZZLE LEAKAGE PIPE
CONNECT NOZZLE LEAKAGE PIPE ASSEMBLY
Engage the clamp to connect the nozzle leakage pipe assembly to the hose clamp.
Connect the nozzle leakage pipe assembly to the No. 2 nozzle leakage pipe and slide the hose clip to secure it.
INSTALL NO. 1 FUEL HOSE SUB-ASSEMBLY
Connect the No. 1 fuel hose sub-assembly to the No. 2 nozzle leakage pipe and slide the hose clip to secure it.
INSTALL AIR CLEANER CAP SUB-ASSEMBLY WITH HOSE
INSTALL VACUUM PUMP ASSEMBLY