Toyota 11101-88360 Head Sub-Assy, Cylinder

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While machined cylinder heads can be rebuilt by the home mechanic by the removal of old, worn or damaged parts, purchase of a new or a re-manufactured head is relatively easier and cheaper to acquisition especially due to shortage and unavailability of some cylinder head parts for one to work on the original cylinder head. Disassembly requires the intake and the exhaust valves and related parts to be also pulled off the engine block provided the lifters, rocker arms and camshaft have been pulled out. It is necessary to sort the valves and their components prior to disposal by marking them in a way that makes it possible to reinstall them in their corresponding valve guides. To dismantle the first valve, first, use the spring compressor to compact the springs and pull out their keepers and then, while slowly releasing the compressor, take off the retainer, spring soldier and, if any, the spring seat. One has to be very careful not to damage the lifter bores when compressing the valve springs, but this mainly applies to other engines apart from the 2S-E units. Once the valve has been pulled out, the guide oil seal should also be also removed out of the guide and in case the valve has a binding problem, it may also be necessary to deburr that area especially round the keeper groove. This process should be done for the other valves and all the parts of each valve should be labeled or packed together for ease of reassembly. After all the valves and other parts have been dismantled and arranged systematically, the head should be washed and inspected carefully; additionally, the engine should be dismantled if a thorough overhaul of the cylinder head is also planned before washing or cleaning and observing the condition of the head.

Scrape off any heavy deposits on the valves, then use a motorized wire brush to remove deposits from the valve heads and stems, ensuring the valves do not get mixed up.

Install the components that were removed from the head.

Repeat the procedure for the remaining valves, ensuring to return the components to their original locations and not to mix them up.