Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2002HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONSCYLINDER HEAD TORQUE & SEQUENCE
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Cylinder Head Torque & Sequence
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Cylinder Head Torque & Sequence
INSTALL CYLINDER HEAD SUB-ASSY
HINT: The cylinder head bolts are tightened in 2 progressive steps.
a. Apply seal packing in the shape of bead (Diameter 2.5 - 3 mm (0.098 - 0.118 inch)) consequently as shown in the illustration.
Seal packing: Part No. 08826-00080 or equivalent
NOTICE:
- Remove any oil from contact surface.
- Install the cylinder head within 3 minutes after applying seal packing.
- After installing the cylinder head, cylinder head bolts must be tightened within 15 minutes.
b. Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts.
c. Install bolts and plate washers to the cylinder head.
NOTICE: Do not drop the washers into the cylinder head.
d. Using a 10 mm bi-hexagon wrench, temporarily tighten each bolts in the several passes, as the sequence shown in the illustration, and fully tighten with specified torque.
Torque: 79 Nm (806 kgf-cm, 58 ft. lbs.)
e. Mark the front side of each cylinder head bolt with paint.
f. Retighten the cylinder head bolts by 90° in the sequence shown.
g. Check that the painted marks are now at a 90° angle to the front.
HINT: The cylinder head bolts are tightened in 2 progressive steps.
a. Apply seal packing in the shape of bead (Diameter 2.5 - 3 mm (0.098 - 0.118 inch)) consequently as shown in the illustration.
Seal packing: Part No. 08826-00080 or equivalent
NOTICE:
- Remove any oil from contact surface.
- Install the cylinder head within 3 minutes after applying seal packing.
- After installing the cylinder head, cylinder head bolts must be tightened within 15 minutes.
b. Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts.
c. Install bolts and plate washers to the cylinder head.
NOTICE: Do not drop the washers into the cylinder head.
d. Using a 10 mm bi-hexagon wrench, temporarily tighten each bolts in the several passes, as the sequence shown in the illustration, and fully tighten with specified torque.
Torque: 79 Nm (806 kgf-cm, 58 ft. lbs.)
e. Mark the front side of each cylinder head bolt with paint.
f. Retighten the cylinder head bolts by 90° in the sequence shown.
g. Check that the painted marks are now at a 90° angle to the front.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.