INSTALL CYLINDER HEAD GASKET
Check piston protrusions for each cylinder
Clean the cylinder block with solvent.
Set the piston of the cylinder to be measured to slightly before TDC.
Place a dial indicator on the cylinder block, set the measuring tip as shown in the illustration.
Set the dial indicator at 0 mm (0 in.).
Tech Tips
Use a dial indicator measuring tip as shown in the illustration.
Make sure that the measuring tip is square to the cylinder block gasket surface and piston head when taking the measurements.
| *a | Measuring Tip |
| *b | Protrusion |
Find where the piston head protrudes most by slowly turning the crankshaft clockwise and counterclockwise.
| *a | Front |
| *b | Measuring Point |
Measure each cylinder at 2 places as shown in the illustration, making a total of 8 measurements.
For the piston protrusion value of each cylinder, use the average of the 2 measurements of each cylinder.
| Protrusion |
|---|
| 0.68 - 0.97 mm (0.00268 - 0.0382 in.) |
Tech Tips
When removing piston and connecting rod assembly: If the protrusion is not as specified, remove the piston and connecting rod assembly and reinstall it.
(See cylinder block disassembly and assembly)
| *a | Cutout Mark |
| *b | Front |
Select new cylinder head gasket
Tech Tips
There are 3 sizes of new cylinder head gaskets, marked "B", "D" or "F" accordingly.
| 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.
| Piston protrusion (mm (in.)) | Gasket size |
|---|---|
| 0.68 - 0.77 (0.0268 - 0.0303) | Use B |
| 0.78 - 0.87 (0.0307 - 0.0343) | Use D |
| 0.88 - 0.97 (0.0346 - 0.0382) | Use F |
Place a new cylinder head gasket in position on the cylinder block.
Note
Be careful of the installation direction.
INSTALL CYLINDER HEAD SUB-ASSEMBLY
Tech Tips
Set the No.1 cylinder to 90° BTDC/compression to avoid interference with the piston top and valve head.
| *a | Turn |
Using the crankshaft pulley bolt, turn the crankshaft 90° counterclockwise, and put the timing mark of the crankshaft timing pulley with the protrusion of the timing belt case.
Place the cylinder head in position on the cylinder head gasket.
Install cylinder head bolts
Tech Tips
The cylinder head bolts are tightened in 3 progressive steps (steps (2), (4) and (5)).
If any bolts is broken or deformed, replace it.
Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts.
Install and uniformly tighten the 18 cylinder head bolts, in several passes, in the sequence shown.
Tech Tips
Each bolt length is indicated in the illustration.
| Bolt length |
|---|
| 107 mm (4.12 in.) for A |
| 127 mm (5.00 in.) for B |
If any one of the cylinder head bolts does not meet the torque specification, replace the cylinder head bolt.
| *a | Front |
| *b | Painted Mark |
Mark the front of the cylinder head bolt with paint.
Re-tighten the cylinder head bolts 90° in the numerical order shown.
Re-tighten cylinder head bolts by an additional 90°.
Check that the painted mark is now facing rearward.
INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
| *a | Seal Packing |
Remove any old packing (FIPG) material.
Apply seal packing to the cylinder head as shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent |
Install the gasket to the cylinder head cover.
Install the cylinder head cover with 8 bolts and 2 nuts. Uniformly tighten the bolts and nuts in several passes.
INSTALL CYLINDER HEAD COVER NO.2 (w/ Cylinder Head Cover No.2)
Install the cylinder head cover silencer to the cylinder head cover.
Install the cylinder head cover with the 4 plate washers and nuts.
INSTALL OIL FILLER CAP SUB-ASSEMBLY
INSTALL INTAKE AIR CONNECTOR SUB-ASSEMBLY
Install a new gasket to the intake manifold.
Install the intake air connector with the 3 nuts and bolt.
INSTALL INJECTION PIPE SUB-ASSEMBLY NO.4
INSTALL INJECTION PIPE SUB-ASSEMBLY NO.3
INSTALL INJECTION PIPE SUB-ASSEMBLY NO.2
INSTALL INJECTION PIPE SUB-ASSEMBLY NO.1
INSTALL THROTTLE CONTROL CABLE SUPPORT
INSTALL EXHAUST PIPE ASSEMBLY FRONT
INSTALL EXHAUST FRONT PIPE ASSEMBLY NO.2
INSTALL EXHAUST MANIFOLD HEAT INSULATOR NO.1
Install the heat insulator with the 3 bolts.
INSTALL ENGINE HANGER NO.2
REMOVE TIMING BELT
INSTALL RADIATOR ASSEMBLY
INSTALL WATER BY-PASS HOSE NO.2 (w/ ACSD)
INSTALL WATER BY-PASS HOSE (w/ ACSD)
INSTALL HEATER WATER OUTLET HOSE A (FROM HEATER UNIT) (W/ HEATER)
INSTALL HEATER WATER INLET HOSE A (W/ HEATER)
INSTALL ENGINE UNDER COVER SUB-ASSEMBLY NO.1
INSTALL ENGINE SERVICE HOLE SUB COVER SUB-ASSEMBLY (W/O TILT CAB CAB TYPE)
INSTALL PARKING BRAKE SHOE LEVER SUB-ASSEMBLY (W/O TILT CAB CAB TYPE)
INSTALL TRANSMISSION FLOOR SHIFT ASSEMBLY (W/O TILT CAB CAB TYPE)
for G54 Manual Transmission
for R451 Manual Transmission
INSTALL FRONT SEAT ASSEMBLY (DRIVER SEAT) (W/O TILT CAB CAB TYPE)
Temporarily install front side of the front seat assembly RH with the 2 bolts.
Install the 2 rear side bolts.
Tighten the 2 front side bolts.
Install the seat track cover.
CHECK ENGINE COOLANT LEAK
REFILL ENGINE COOLANT
BLEED INJECTION PIPE
Move the priming pump in the upper part of the fuel filter assembly up and down, and fill the injection pump assembly and fuel system with fuel.
Loosen one of the flare nuts (in the nozzle side).
Crank the engine until fuel comes out from the flare nut (in the nozzle side).
Tighten the flare nut.
The above operations should be carried out in each injection pipe.
CHECK FUEL LEAK