System Specifications

2007 Toyota Highlander 2WD V6-3.3L (3MZ-FE)SECTION System Specifications
LEFT CYLINDER HEAD





Uniformly install and tighten the 8 cylinder head bolts in the sequence shown in the illustration (procedure "A").
Torque 54 Nm (550 kgf-cm, 40 ft. lbs.)





Mark the front side of each cylinder head bolt head with paint, as shown in the illustration.

Retighten the cylinder head bolts by 90° in the same sequence as above.
Check that each painted mark is now at a 90° angle to the front.





Using a socket hexagon wrench 8, install the hexagon bolt.
Torque 19 Nm (194 kgf-cm, 14 ft. lbs.)

RIGHT CYLINDER HEAD





Uniformly install and tighten the 8 cylinder head bolts in the sequence shown in the illustration (procedure "A").
Torque 54 Nm (550 kgf-cm, 40 ft. lbs.)





Mark the front side of each cylinder head bolt head with paint, as shown in the illustration.
Retighten the cylinder head bolts by 90° in the same sequence as above.
Check that each painted mark is now at a 90° angle to the front.





Using a socket hexagon wrench 8, install the hexagon bolt.
Torque 19 Nm (194 kgf-cm, 14 ft. lbs.)

INTAKE MANIFOLD





Install the intake manifold with the 9 bolts, 2 nuts and 2 washers. Uniformly tighten the bolts and nuts in the sequence shown in the illustration.
Torque 15 Nm (153 kgf-cm, 11 ft. lbs.)


CAMSHAFT BEARING CAP

















Uniformly tighten the 10 bearing cap bolts in the sequence shown in the illustration.
Torque 16 Nm (163 kgf-cm, 12 ft. lbs.)

CAMSHAFT TIMING GEAR ASSEMBLY
Using a 46 mm socket wrench, install and tighten a lock nut by turning it counterclockwise
Torque: 150 Nm (1,530 kgf-cm, 111 ft. lbs.)

LEFT EXHAUST MANIFOLD






Tighten the 7 nuts in the sequence shown in the illustration
Step 1: Torque 49 Nm (500 kgf-cm, 36 ft. lbs.)
Step 2: Retighten nuts 1 and 2 as shown in the illustration

RIGHT EXHAUST MANIFOLD






Uniformly tighten the 6 nuts in the sequence shown in the illustration
Step 1: Torque 49 Nm (500 kgf-cm, 36 ft. lbs.)
Step 2: Retighten nuts 1 and 2 shown in the illustration
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.