Note
When replacing the injectors (including shuffling the injectors between the cylinders), common rail or cylinder head, it is necessary to replace the injection pipes with new ones.
When replacing the fuel supply pump, common rail, cylinder block, cylinder head, cylinder head gasket or timing gear case, it is necessary to replace the fuel inlet pipe with a new one.
After removing the injection pipes and fuel inlet pipe, clean them with a brush and compressed air.
When replacing a fuel injector, check that the injection compensation codes of the fuel injectors installed on the cylinders match the ones registered in the ECM. If they do not match, correct the registered data Click here.
INSTALL TIGHT PLUG
Tech Tips
If coolant leaks from a tight plug or a plug is corroded, replace it.
Perform this procedure only when replacement of a tight plug is necessary.
| *1 | Adhesive |
Apply adhesive to the end of a new tight plug.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Note
Do not start the engine for at least 1 hour after the installation.
Position A:
Using a 14 mm steel bar and hammer, tap in the tight plug as shown in the illustration.
Other Positions:
Using SST and a hammer, tap in a new tight plugs as shown in the illustration.
| *a | Right Side | *b | Left Side |
| *c | Front Side | *d | Rear Side |
| *e | for RHD | *f | for LHD |
| *g | Stops | - | - |
INSTALL STUD BOLT
Tech Tips
Perform this procedure only when replacement of a stud bolt is necessary.
Install the stud bolts.
| *a | Front Side | *b | Left Side |
| *c | Upper Side | *d | Lower Side |
INSTALL STRAIGHT PIN
Tech Tips
Perform this procedure only when replacement of a straight pin is necessary.
Using a plastic-faced hammer, tap in new straight pins to the cylinder block.
| *a | Front Side | *b | Rear Side |
| *c | Until pin stops | - | - |
INSTALL RING PIN
Tech Tips
Perform this procedure only when replacement of a ring pin is necessary.
Using a plastic-faced hammer, tap in new ring pins to the cylinder block.
| *a | Cylinder Head Side | *b | 6 mm or less |
INSTALL HOLE PLUG
Tech Tips
Perform this procedure only when replacement of the hole plug is necessary.
Apply a light coat of engine oil to a new O-ring.
Install the O-ring and hole plug with the bolt.
INSTALL PLATE PLUG
Tech Tips
Perform this procedure only when replacement of the plate plug is necessary.
Install a new O-ring and the plate plug with the bolt.
INSTALL OIL FILTER BRACKET WITH HEAD STRAIGHT SCREW PLUG
Tech Tips
Perform this procedure only when replacement of the oil filter bracket with head straight screw plug is necessary.
Install a new gasket and the oil filter bracket with head straight screw plug.
INSTALL PLUG
Note
If coolant leaks from the plug or the plug is corroded, replace the plug.
Clean the cylinder block side hole and plug with non-residue solvent.
Apply adhesive onto the shaded area of the plug as shown in the illustration.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Note
Install the plug within 3 minutes after applying adhesive.
Set the plug and tap it until the edge of the plug fits against the chamfered part of the cylinder block as shown in the illustration.
INSTALL NO. 1 OIL NOZZLE SUB-ASSEMBLY
Align the pin of the oil nozzle with the pin hole of the cylinder block.
Install the 4 oil nozzles with the 4 check valves.
INSTALL PISTON PIN
Assemble the piston and connecting rod.
Using a small screwdriver, install a new snap ring on one side of the piston pin hole.
Gradually heat the piston to about 80°C (176°F).
Coat the piston pin with engine oil.
| *a | Front Mark (Arrow) |
| *b | Front Mark (Protrusion) |
Align the front marks of the piston and connecting rod, and push in the piston pin with your thumb.
Check the fit between the piston and piston pin. Try to move the piston back and forth on the piston pin.
Using a small screwdriver, install a new snap ring on the other side of the piston pin hole.
| *a | Coil Joint |
| *b | Oil Ring End Gap |
Install the piston rings.
Install the coil and oil ring by hand.
Tech Tips
Face the end gap of the oil ring in the opposite direction of the coil joint.
| *1 | No. 1 Compression Ring |
| *2 | No. 2 Compression Ring |
| *a | Code Mark |
Using a piston ring expander, install the No. 1 and No. 2 piston rings with the code mark facing upward.
| Code mark | ||||||
|---|---|---|---|---|---|---|
|
| *1 | No. 1 Compression Ring |
| *2 | No. 2 Compression Ring |
| *3 | Coil |
| *4 | Oil Ring |
| *a | Front Mark |
Position the piston rings so that the ring ends are as shown.
Note
Do not align the ring ends.
INSTALL CONNECTING ROD BEARING
Align the bearing claw with the groove of the connecting rod or connecting cap.
Install the bearings in the connecting rod and connecting rod cap.
INSTALL CRANKSHAFT BEARING
Tech Tips
Upper bearings have an oil groove and oil hole. Lower bearings do not.
Align the bearing claw with the claw groove of the cylinder block, and push in the 5 upper bearings.
Align the bearing claw with the claw groove of the crankshaft bearing cap, and push in the 5 lower bearings.
INSTALL CRANKSHAFT
Place the crankshaft on the cylinder block.
Install the 2 upper thrust washers to the No. 5 journal position of the cylinder block.
Push the crankshaft toward the front (rear) side.
Install the 2 thrust washers with the oil grooves facing outward.
Install the 2 lower thrust washers on the No. 5 bearing cap with the grooves facing outward.
Install the 5 crankshaft bearing caps in their proper locations.
Install the crankshaft bearing cap bolts.
Tech Tips
The main bearing cap bolts are tightened in 2 progressive steps.
If a main bearing cap bolt is broken or deformed, replace it.
Apply a light coat of the engine oil to the threads and under the bolt heads of the main bearing caps.
Install and uniformly tighten the 10 bolts of the main bearing caps in several passes in the sequence shown in the illustration.
If any one of the bearing cap bolts does not meet the torque specification, replace the bearing cap bolt.
| *a | Painted Mark |
| *b | Front |
Mark the front of the main bearing cap bolt with paint.
Retighten the main bearing cap bolts 90° in the numerical order shown above.
Check that the painted mark is now at a 90° angle to the front.
Check that the crankshaft turns smoothly.
Check the crankshaft thrust clearance.
INSTALL PISTON AND CONNECTING ROD
Using a piston ring compressor, push the correctly numbered piston and connecting rod assembly into the cylinder with the front mark of the piston facing forward.
| *a | Front Mark (Arrow) |
Place the connecting rod cap on the connecting rod.
Match the numbered connecting rod cap with the connecting rod.
Align the pins of the connecting rod cap with the pin holes of the connecting rod, and install the connecting rod cap.
| *a | Front |
| *b | Front Mark (Protrusion) |
Check that the front mark of the connecting rod cap is facing forward.
| *a | Matchmark |
Install the connecting rod cap bolts.
Tech Tips
The connecting rod cap bolts are tightened in 2 progressive steps.
If any connecting rod bolt is broken or deformed, replace it.
Apply a light coat of engine oil to the threads and under the heads of the connecting rod cap bolts.
Install and alternately tighten the bolts of the connecting rod cap in several passes.
If any one of the connecting rod cap bolts does not meet the torque specification, replace the cap bolt.
| *a | Painted Mark |
| *b | Front |
Mark the front of the connecting rod cap bolts with paint.
Retighten the connecting rod cap bolts 90° as shown.
Check that the painted mark is now at a 90° angle to the front.
Check that the crankshaft turns smoothly.
Check the connecting rod thrust clearance Click here.
INSTALL CYLINDER BLOCK OIL ORIFICE
INSTALL REAR ENGINE OIL SEAL RETAINER
Remove any old seal packing material.
| *1 | Seal Packing |
Remove oil seal packing from the cylinder block.
Apply seal packing to the specific places described in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Standard seal diameter |
|---|
| 4.0 mm (0.16 in.) |
Note
After applying seal packing, install the engine rear oil seal retainer within 3 minutes and tighten its bolts within 15 minutes.
Install the retainer with the 5 bolts. Alternately tighten the 7 bolts in several passes.
INSTALL NO. 2 BALANCESHAFT DRIVEN GEAR
Mount the balance shaft between aluminum plates in a vise.
Note
Be careful not to damage the balance shaft.
Align the balance shaft knock pin with the knock pin hole. Then install the balance shaft thrust washer and balance shaft driven gear.
Install the bolt.
INSTALL NO. 2 BALANCESHAFT SUB-ASSEMBLY
Install the balance shaft with the 2 bolts.
INSTALL NO. 1 BALANCESHAFT DRIVEN GEAR
Mount the balance shaft between aluminum plates in a vise.
Note
Be careful not to damage the balance shafts.
Align the balance shaft knock pin with the knock pin hole. Then install the balance shaft thrust washer and balance shaft driven gear.
Install the bolt.
INSTALL NO. 1 BALANCESHAFT SUB-ASSEMBLY
Install the balance shaft with the 2 bolts.
INSTALL TIMING GEAR CASE ASSEMBLY
Remove any old seal packing material.
| *1 | Seal Packing |
Apply seal packing to the timing gear case as shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Standard seal diameter |
|---|
| 4.0 mm (0.16 in.) |
Note
Install the timing gear case within 3 minutes and tighten the bolts within 15 minutes of applying seal packing.
| *1 | New Gasket |
Install a new gasket to the groove of the timing gear case assembly.
| *1 | New O-Ring |
Install 2 new O-rings to the cylinder block groove of the timing gear case assembly.
Align the "2" marks of the balance shaft driven gear No. 1 and oil pump drive gear.
Align the mark on the oil pump drive gear with the mark on the timing gear case assembly.
| *1 | Union Bolt |
Install the timing gear case with the union bolt and 8 bolts.
Remove the straight screw plug.
Pour in approximately 50 cc (3.05 cu in.) of engine oil into the oil pump.
Reinstall a new gasket and the screw plug.
INSTALL OIL STRAINER SUB-ASSEMBLY
Install a new gasket and the oil strainer with the 2 bolts and 2 nuts.
INSTALL OIL PAN SUB-ASSEMBLY
| *1 | Seal Packing |
Remove any old seal packing material.
Apply seal packing to the oil pan as shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Standard seal diameter |
|---|
| 4.0 mm (0.16 in.) |
Note
Install the oil pan within 3 minutes and tighten the bolts within 15 minutes of applying seal packing.
Install the oil pan with the 22 bolts and 2 nuts.
Install the vinyl tube to the oil pan.
INSTALL ENGINE OIL LEVEL SENSOR
Install a new gasket to the engine oil level sensor.
Install the engine oil level sensor with the 4 bolts.
INSTALL CRANKSHAFT TIMING GEAR
Position the crankshaft timing gear with timing mark "1" facing the forward.
Align the set key on the crankshaft with the key groove of the crankshaft timing gear.
Using SST and a hammer, tap in the timing gear.
INSTALL INJECTION GEAR
Install a new O-ring and the supply pump with the 2 nuts.
Align the "3" marks of the No. 2 balance shaft driven gear and injection pump gear.
| *1 | New O-Ring |
Install a new O-ring to the injection pump gear.
Install the injection pump gear set nut.
Using SST, tighten the nut.
INSTALL NO. 1 IDLE GEAR
| *a | Cut-Off Mark |
Mount the No. 1 idle gear in a vise.
Tech Tips
The cut-off mark of the idle gear faces down.
Note
Be careful not to damage the gear.
| *1 | Wave Washer |
| *2 | No. 2 Idle Sub-Gear |
| *3 | Idle Gear Spring |
Install the idle gear spring.
Install the No. 2 idle sub-gear.
Install the wave washer.
Tech Tips
Fit the pins on the gears to the spring ends.
Using snap ring pliers, install the snap ring.
| *1 | Service Bolt |
Using SST, align the holes of the No. 1 idle gear and No. 2 idle sub-gear by turning the No. 2 idle sub-gear clockwise, and install a service bolt.
Remove the No. 1 idle gear from the vise and turn it upside down.
| *a | Upward |
Mount the No. 1 idle gear and No. 2 idle sub-gear in a vise.
Note
Be careful not to damage the gears.
| *1 | Service Bolt |
Remove the service bolt.
| *1 | Wave Washer |
| *2 | No. 1 idle Sub-Gear |
| *3 | Idle Gear Spring |
Install the idle gear spring.
Install the No. 1 idle sub-gear.
Install the wave washer.
Tech Tips
Fit the pins on the gears to the spring ends.
Using a snap ring pliers, install the snap ring.
| *1 | Service Bolt |
| *a | Upward |
Using SST, align the holes of the No. 1 idler gear and No. 1 idle sub-gear by turning the No. 1 idle sub-gear clockwise, and install a service bolt.
| *1 | Engine Oil |
Apply a coat of engine oil to the gear shaft.
| *a | Oil Hole |
Install the gear shaft as shown in the illustration.
| *a | Turn |
Align the "5" timing marks of the idle gear and crankshaft timing gear.
Using SST, turn the supply pump gear, and align the "4" timing marks of the idle gear and supply pump gear, and mesh the gears.
| *1 | Service Bolt |
| *a | Protrusion |
Position the thrust plate with the protrusion facing forward.
Align the bolt holes, and install the thrust plate with the 2 bolts.
Remove the service bolt.
INSTALL NO. 1 CRANKSHAFT POSITION SENSOR PLATE
Align the set key with the key groove of the sensor plate.
Install the sensor plate, facing the cup side outward.
INSTALL OIL CHECK VALVE SUB-ASSEMBLY
Using a 6 mm hexagon wrench, install the oil check valve with the bolt.
INSTALL TIMING GEAR CASE
Remove any old seal packing material.
| *1 | Seal Packing |
Apply seal packing to the timing gear cover as shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Standard seal diameter |
|---|
| 4 mm (0.16 in.) |
Note
Install the timing gear case within 3 minutes and tighten bolts within 15 minutes of applying seal packing.
Install 3 new O-rings to the timing gear case assembly.
Install the timing gear case with the 14 bolts and 2 nuts.
INSTALL ENGINE WATER PUMP ASSEMBLY
Install a new gasket and the water pump with the 5 bolts and 2 nuts.
INSTALL CYLINDER HEAD GASKET
Find where the piston head protrudes most by slowly turning the crankshaft clockwise and counterclockwise.
| *a | Measuring Tip |
| *b | Protrusion |
| *a | Measuring Point |
Measure the piston protrusion of each cylinder at 2 points as shown in the illustration.
For the piston protrusion value of each cylinder, use the average of the 2 measurements of that cylinder.
| Standard piston protrusion |
|---|
| 0.005 to 0.254 mm (0.0002 to 0.0100 in.) |
Tech Tips
If the protrusion is not as specified, remove the piston and connecting rod assembly and reinstall them.
| *a | Cutout Mark |
|
Front |
Select a new cylinder head gasket.
Tech Tips
New cylinder head gaskets are available in 5 sizes, and are marked A, B, C, D or E.
| New Installed Cylinder Head Gasket Thickness | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Select the largest piston protrusion value from the measurements made. Then select a new appropriate gasket according to the table below.
| Gasket Size to be Used | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Place the cylinder head on the cylinder block.
|
Front |
Place the cylinder head gasket on the cylinder block.
Note
Make sure the gasket is installed in the collect direction.
Place the cylinder head on the cylinder head gasket.
INSTALL CYLINDER HEAD SUB-ASSEMBLY
Tech Tips
The cylinder head bolts are tightened in 3 progressive steps.
If any bolt is broken or deformed, replace it.
Apply a light coat of engine oil to the threads and under the heads of the cylinder head bolts.
Install and uniformly tighten the 18 cylinder head bolts and 18 washers in several passes in the sequence shown in the illustration.
| Bolt | Length |
|---|---|
| A | 110 mm (4.33 in.) |
| B | 167 mm (6.57 in.) |
If any of the cylinder head bolts does not meet the torque specification, replace it.
| *a | Painted Mark |
| *b | Front |
Mark the front of the cylinder head bolts with paint.
Further tighten the cylinder head bolts by 90° in the sequence shown in the illustration above.
Finally, tighten the cylinder head bolts by an additional 90°.
Check that the painted marks are now facing rearward.
INSTALL CAMSHAFT
| *1 | Set Key |
Using the crankshaft pulley bolt, set the No. 1 cylinder to 90° BTDC/compression.
Tech Tips
Set the No. 1 cylinder to 90° BTDC/compression to avoid interference with the piston top and valve head.
Install the camshaft.
| *1 | Key Groove |
| *a | Upward |
Apply MP grease to the thrust portion of the camshaft.
Place the camshaft on the cylinder head, facing the key groove upward.
Align the timing marks (1 dot mark) of the camshaft drive and driven main gears, and set the No. 2 camshaft in place.
| *1 | Seal Packing |
| *a | Oil Passage |
Remove any old seal packing material from the camshaft bearing cap.
Apply seal packing to the specified areas shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
| Standard seal diameter |
|---|
| 4 mm (0.16 in.) |
Note
Do not allow seal packing to come into contact with the oil passage of the bearing cap.
After applying seal packing, install the camshaft bearing caps within 3 minutes and fasten the bolts within 15 minutes.
Do not start the engine for at least 2 hours after the installation.
Install the 5 bearing caps in their proper locations.
Apply a light coat of engine oil to the threads and under the heads of the bearing cap bolts.
Install and uniformly tighten the 15 bearing cap bolts in several passes in the sequence shown in the illustration.
INSTALL CAMSHAFT SETTING OIL SEAL
Apply MP grease to the lip of a new oil seal.
Using SST and a hammer, tap in the oil seal until its surface is flush with the oil seal retainer edge.
SET NO. 1 CYLINDER TO TDC / COMPRESSION
| *a | Alignment Mark |
Align the alignment mark of the crankshaft pulley and timing gear case cover by rotating the crankshaft clockwise.
Tech Tips
Make sure that both cam-noses (intake side and exhaust side) of the No. 1 cylinder face upward.
INSPECT VALVE CLEARANCE
Check only the valves indicated.
| *1 | Exhaust |
| *2 | Intake |
| *a | Front |
Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
| Standard Valve Clearance (Cold) | ||||
|---|---|---|---|---|
|
Write down the valve clearance measurements that are not within the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.
Turn the crankshaft 360° to set the No. 4 cylinder to TDC / compression.
Check only the valves indicated.
| *1 | Exhaust |
| *2 | Intake |
| *a | Front |
Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
| Standard Valve Clearance (Cold) | ||||
|---|---|---|---|---|
|
Write down the valve clearance measurements that are not within the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.
ADJUST VALVE CLEARANCE
Remove the camshafts Click here.
Remove the 8 valve lifters.
Using a micrometer, measure the thickness of the removed lifter.
Calculate the thickness of a new lifter so that the valve clearance comes within the specified value.
| A | B | C |
|---|---|---|
| New lifter thickness | Used lifter thickness | Measured valve clearance |
| New Lifter Thickness |
|---|
| Intake A = B + (C - 0.25 mm (0.0098 in.)) |
| Exhaust A = B + (C - 0.40 mm (0.00157 in.)) |
Select a new lifter with a thickness as close as possible to the calculated values.
Tech Tips
Valve lifters are available in 35 sizes in increments of 0.020 mm (0.0008 in.), from 5.060 mm (0.1992 in.) to 5.740 mm (0.2260 in.).
Install the selected valve lifter.
| *1 | Valve Lifter Selection Chart (Intake) | *2 | Installed lifter thickness mm (in.) |
| *3 | Measured clearance mm (in.) | - | - |
| *1 | Valve Lifter Selection Chart (Intake) | *2 | Installed lifter thickness mm (in.) |
| *3 | Measured clearance mm (in.) | - | - |
| Standard intake valve clearance (Cold) |
|---|
| 0.20 to 0.30 mm (0.008 to 0.012 in.) |
| EXAMPLE |
|---|
| The 5.250 mm (0.2067 in.) lifter is installed, and the measured clearance is 0.400 mm (0.0157 in.). Replace the 5.250 mm (0.2067 in.) shim with a No. 40 lifter. |
| New Lifter Thickness (mm (in.)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| *1 | Valve Lifter Selection Chart (Exhaust) | *2 | Installed lifter thickness mm (in.) |
| *3 | Measured clearance mm (in.) | - | - |
| *1 | Valve Lifter Selection Chart (Exhaust) | *2 | Installed lifter thickness mm (in.) |
| *3 | Measured clearance mm (in.) | - | - |
| Standard exhaust valve clearance (Cold) |
|---|
| 0.35 to 0.45 mm (0.014 to 0.018 in.) |
| EXAMPLE |
|---|
| The 5.340 mm (0.2102 in.) lifter is installed, and the measured clearance is 0.480 mm (0.0189 in.). Replace the 5.340 mm (0.2102 in.) shim with a No. 42 lifter. |
| New lifter thickness (mm (in.)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Install the camshaft Click here.
INSTALL CYLINDER BLOCK INSULATOR
Install the cylinder block insulator to the cylinder head.
INSTALL NO. 2 TIMING BELT COVER
| *1 | Seal Packing |
Apply seal packing to the specified areas shown in the illustration.
| Seal Packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
Note
After applying seal packing, install the No. 2 timing belt cover within 3 minutes and tighten the bolts and nut within 15 minutes.
Clean the bolts and their holes.
Apply adhesive to 2 or 3 threads at the end of each of the 4 bolts.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Install the No. 2 timing belt cover with the 4 bolts and nut.
INSTALL CAMSHAFT TIMING PULLEY
Install the camshaft timing pulley.
Fasten the bolt of the camshaft timing pulley while holding the camshaft with a wrench.
INSTALL INJECTOR ASSEMBLY
Note
Be sure to install the injector, No. 1 nozzle holder clamp, washer and bolt in their original positions.
Install 4 new injection nozzle seats to the cylinder head.
| *1 | O-Ring |
Apply a small amount of clean engine oil to 4 new O-rings.
Install one of the O-rings to each injector as shown in the illustration.
Install the 4 injectors into the cylinder head.
Note
Install the injector until it touches the injection nozzle seat surface.
After installing the injector to the cylinder head, the O-ring may prevent the injector from being fully seated. If so, pull out the injector and reinstall it.
Always reinstall an injector to the same place it was removed from.
For an injector that has been replaced with a new injector, register the injector compensation code Click here.
Temporarily install the 4 injection pipes with the union nuts.
Note
When replacing an injector, it is necessary to replace the 4 injection pipes with new ones.
Tech Tips
To position the injectors, loosely tighten the union nuts.
Check the nozzle leakage pipe. Check that there are no scratches or dents on the 5 union seal surfaces. If scratches or dents are present, replace the nozzle leakage pipe.
| *1 | Union Bolt |
| *2 | Gasket |
| *3 | Hollow Screws |
Set the nozzle leakage pipe and 5 new gaskets in place.
Apply a small amount of clean engine oil to the 4 injector hollow screws and union bolt.
Temporarily install the nozzle leakage pipe with the 4 injector hollow screws and union bolt.
Temporarily install 4 new washers and the 4 No. 1 nozzle holder clamps with the 4 bolts.
| *1 | Washer |
| *a | Downward |
Note
The fork portion of the No. 1 nozzle holder clamp must be set on the injector.
Before tightening the bolts, check that the No. 1 nozzle holder clamps are set properly.
When installing the clamp bolts, first tighten them by hand until they cannot be turned further. Then, tighten the bolts to the specified torque in a following step.
When tightening the bolts, be careful so as not to tilt the bolt or clamp.
Do not reuse the washer.
| *1 | No. 1 Nozzle Holder Clamp |
Tech Tips
Apply a small amount of clean engine oil to the threads and under the heads of the clamp bolts.
Tighten the 4 No. 1 nozzle holder clamp bolts.
Loosen the union nuts and remove the 4 injector pipes.
| *1 | Union Bolt |
Tighten the 4 injector hollow screws in order from 1 to 4.
Note
If an injector hollow screw is accidentally tightened beyond the torque specification, it must be replaced.
Tighten the union bolt.
Note
If the union bolt is accidentally tightened beyond the torque specification, it must be replaced.
INSPECT NOZZLE LEAKAGE PIPE ASSEMBLY LEAK
Check that there are no leaks from the nozzle leakage pipe connection.
Install a new gasket and the No. 2 nozzle leakage pipe to the cylinder head with SST.
| Part No. |
|---|
| 23762-27010 (No. 2 nozzle leakage pipe) |
| *1 | No. 2 Nozzle Leakage Pipe |
| *2 | Gasket |
Apply a small amount of soapy water (or other fluid for detecting fuel leakage) on the nozzle leakage pipe connection.
Install SST (turbocharger pressure gauge) to the fuel return side of the nozzle leakage pipe, maintain 250 kPa (2.5 kgf/cm2, 36 psi) of pressure for 60 seconds and check that no bubbles form.
After checking for fuel leaks, wipe off the soapy water from the nozzle leakage pipe connection.
Remove SST, the No. 2 nozzle leakage pipe and gasket.
Note
Never reinstall the disassembled union bolt to the engine.
INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
| *a | Upper Side of Cylinder Head Cover |
Install 4 new No. 3 cylinder head cover gaskets to the cylinder head cover as shown in the illustration.
Note
Do not install the gaskets at an angle.
Keep the lip of the gasket free from foreign materials.
Install a new cylinder head cover gasket to the cylinder head cover.
| *1 | Seal Packing |
Remove any old seal packing material from the cylinder head.
Apply seal packing to the specific areas shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
Note
Remove any oil from the contact surface.
After applying seal packing, install the cylinder head cover within 3 minutes and tighten the bolts within 15 minutes.
Do not start the engine for at least 2 hours after installing the seal packing.
Install the cylinder head cover with the 10 bolts and 2 nuts in the order shown in the illustration in 2 progressive steps.
INSTALL NOZZLE HOLDER SEAL
Install 4 new holder seals.
INSTALL OIL FILLER CAP GASKET
INSTALL OIL FILLER CAP SUB-ASSEMBLY