Toyota 11101-21031 Head Sub-Assy, Cylinder

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On later models, the plenum should be removed to gain better access.

New and reconditioned cylinder heads can be obtained from manufacturers or engine overhaul specialists.

If a new or reconditioned head is being fitted and the coolant hose outlet pipes at the transmission end are missing, obtain new ones and install them. Apply a thin layer of suitable adhesive to the bottom end of each pipe and press the radiator hose into the cylinder head to a depth of 15 mm. Press the bypass hose pipe in approximately 18 mm. Mark a line on each coolant hose outlet pipe to indicate the correct fitted depth, then press each pipe in squarely, starting by hand and tapping it home with a hammer and block of wood. Fit all sixteen valve spring lower seats into their original positions. Lubricate the valve stem oil seals with clean engine oil and push them into position in the cylinder head using a suitable socket, ensuring they are fully engaged with the valve guide. Lubricate the valve stems and insert them into their original locations, taking care not to damage the valve stem oil seal. Fit the valve springs and upper seats in their original locations. Compress the valve spring and locate the split collets in the recess in the valve stem, then release the compressor and repeat the procedure on the remaining valves. With all the valves installed, place the cylinder head flat on the bench and tap the end of each valve stem with a hammer and block of wood to settle the components. Finally, refit the previously-removed components.

Check the surface for distortion.