Toyota 90913-02062 Seal Or Ring, O

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Broken valve springs and defective valve stem seals can be replaced without removing the cylinder head, typically requiring two special tools and a compressed air source. If compressed air isn't available, a length of nylon rope can be used to prevent the valves from falling into the cylinder. Begin by removing the camshaft and camshaft housing, then the spark plug from the affected cylinder, or all spark plugs if replacing all valve stem seals. Turn the crankshaft until the piston in the affected cylinder is at Top Dead Center on the compression stroke, working on one cylinder at a time following the firing order. Thread an adapter into the spark plug hole and connect an air hose from a compressed air source. Apply compressed air to the cylinder, ensuring the piston does not move unexpectedly. The air pressure will hold the valves in place. If using nylon rope, position the piston just before TDC, fill the combustion chamber with rope, and leave the end hanging out for easy removal. Rotate the crankshaft until slight resistance is felt, then stuff shop rags into the cylinder head holes to prevent parts from falling in. Use a valve spring compressor to compress the spring, remove the keepers, and then take out the spring retainer, valve spring, and stem oil seal. If air pressure fails to hold the valve closed, the cylinder head may need to be removed for further repairs. Wrap a rubber band or tape around the valve stem to prevent it from falling, then release the air pressure. Inspect the valve stem for damage and ensure it moves freely in the guide. Reapply air pressure to retain the valve in the closed position, lubricate the valve stem with engine oil, and install a new oil seal. Position the spring over the valve, ensuring the closely wound coils are next to the head, then install the valve spring retainer and carefully position the keepers. Remove pressure from the spring tool and ensure the keepers are seated. Disconnect the air hose, remove the adapter, and reinstall the camshaft and housing. Finally, install the spark plug(s), reconnect the wire(s), start the engine, and check for oil leaks and unusual sounds from the valve cover area.

Damaged valve springs along with a faulty valve stem seal can easily be repaired and substituted without the removal of the cylinder head and it chiefly involves the usage of tools like valve spring compressors and a supply of compressed air. Start with the removal of the timing belt cover and the timing belt, together with the camshafts and other related components as a result of the model year of the automobile. The withdraw the spark plug of the cylinder in question; if replacing all valve stem seals, then all spark plugs should be withdrawn. Rotate the crankshaft through a full cycle to make the piston of the required cylinder reach the Top Dead Center, operate on them in turns according to the firing sequence. Insert an adapter into the spark plug hole, and attach an air hose to push down the valves using compressed air. If potentially explosive air is not available, place the piston about 45 degrees before top dead center and force the combustion chamber full of nylon rope which the end will be able to be pulled out of. The keepers are compressed with the aid of a valve spring compressor, and afterwards, pull out the spring retainer, the spring itself, and the oil seal. Screw the valve stem cap back on if it was removed and secure the stem with a rubber band or tape to avoid losing it; depressurize the tire. Upon checking the valve, you should check for physical damages on the valve stem, and would also want to ensure it slides easily in the guide. Reapply the air pressure to keep the valve retained together with the installation of a new oil seal on the valve stem after applying engine oil on the stem. Place the spring & retainer, compress the setting spring & place the keepers if required lubricate the same. Remove the air hose and the adapter and then replace the cam shafts and related parts depending on the model year of the car then fit the timing belt and its cover. Lastly secure the spark plugs, connect the wires, and start the engine; ensure that there is no dripping of oil and that the car does not make abnormal noises.

90913-02062 is intake