OEM Toyota Sequoia Cylinder Head Gasket

Toyota Sequoia Cylinder Head Gasket Parts and Q&A

• Gasket, Cylinder Head
  11116-50070
  Q: How to install the cylinder head gasket on Toyota Sequoia?

  A:

  A 2UZ-FE engine installation of the cylinder head gasket begins with inspecting the cylinder head set bolt and the cylinder head LH for Bank 1. The "2R" mark on the RH side and "2L" mark on the LH side indicate proper placement direction of new cylinder head gaskets when cleaning the cylinder block and cylinder head with solvent. Before installing the cylinder head and Exhaust Manifold ensure both the crankshaft timing pulley timing mark is accurate and the piston remains under TDC of compression. The mounting surface should remain free of oil while you apply thin oil coatings to cylinder head bolt threads and their heads. Put the plate washers onto the cylinder head bolts and tighten the bolts to 40 Nm (408 kgf-cm, 30 ft-lbf) torque in the specified sequence. Replace the torque-defective bolt immediately when installing cylinder head bolts. Apply a 90 degrees angle and another 90 degrees angle to the cylinder head bolts while ensuring the paint marks on their heads align backward. Apply the same replacement methods to the cylinder head gasket and sub-assembly of Bank 2. Secure the valve lifters and shims until they show smooth rotation. Begin with the installation of the rear water by-pass joint that requires 4 nuts and 2 new gaskets and must be tightened to 18 Nm (184 kgf-cm, 13 ft-lbf). The sequence continues with inserting the water by-pass pipe sub-assembly using a new O-ring and finally installing the front water by-pass joint with its 2 new gaskets and 4 nuts torqued to 18 Nm (184 kgf-cm, 13 ft-lbf). The technician should install the inlet water housing followed by the Intake Manifold together with the No. 2 and No. 1 fuel pipe sub-assemblies. Instal the EFI fuel pipe clamp after installing the No. 3 water by-pass pipe followed by its removal of the vacuum hose assembly. The engine requires installation of the Camshaft before adding both front No. 2 Exhaust Pipe assembly and front exhaust pipe assembly. All components including the outer cowl top panel sub-assembly with front Wiper Motor and link assembly and cowl top ventilator louver sub-assembly together with front fender to cowl side seals should be reinstalled for both right-hand and left-hand sides. The front wiper arm and blade assemblies should be installed first before connecting the cable to the negative battery terminal with minimum torque of 5.4 Nm (55 kgf-cm, 48 in-lbf). Perform these final steps by checking for leaks of engine oil and coolant, fuel and exhaust gas as well as measuring engine oil level and inspecting ignition timing together with engine idling speed then installing the No. 1 engine under cover.
• Gasket, Cylinder Head
  11115-50080
  Q: How to remove the cylinder head gasket on Toyota Sequoia?

  A:

  The first step for removing a 2UZ-FE cylinder head gasket is to disconnect the negative cable from the battery terminal with a 90-second waiting period to disable SRS system operations. Start by taking off the front wiper arm together with their blades from both sides before moving on to eliminate the fender-to-cowl side seals from both sides followed by the cowl top ventilator louver sub-assembly and the front Wiper Motor and link assembly. The installer should remove the outer cowl top panel sub-assembly together with the No. 1 engine under cover and drain the engine coolant. The next step includes deleting the front Exhaust Pipe assembly together with the front No. 2 exhaust pipe assembly. First disconnect the Camshaft and remove the vacuum hose assembly and finally remove the No. 3 water by-pass pipe together with the EFI fuel pipe clamp while taking out both sub-assemblies for the No. 1 and No. 2 fuel pipes. The technician must remove the Intake Manifold and inlet water housing next before taking out the front water by-pass joint along with the water by-pass pipe sub-assembly that includes the O-ring removal step. The air hose must be detached first followed by removing the rear water by-pass joint before extracting valve lifters and shims from the cylinder head. Keep them organized according to order. Synchronize the torque when loosening the 10 cylinder head bolts arranged in sequence on the left cylinder head (Bank 1) before removing them and plate washers to securely pry off the cylinder head without causing damage to the contact surfaces. The last step involves removing the cylinder head gasket after performing this operation on the right cylinder head (Bank 2) and its counterpart (Bank 1).