Cylinder head assembly (Honda Accord 6)

1. Regardless of whether the head was sent to the shop for valve service or not, before proceeding with its assembly, carefully check the cleanliness of all components once again.

2. When the head is returned from the workshop, the valves and associated components will already be installed. In this case, skip the procedures in the next five paragraphs and proceed directly to the actions described in paragraph 8.



3. First install the valve spring seats on the valve guides, then put a new valve stem seal on each of the guides. The valve stem seals (inlet and outlet) are "seated" on their guides by carefully tapping with a hammer through a special mandrel or socket head of the appropriate size.

Warning! Stop tapping the cap immediately after it is fully seated on the bushing - further impacts may damage the rubber. Make sure that the caps are not twisted on the bushings.

The intake and exhaust valve stem seals are different sizes and are color coded - do not mix them up.


4. Working from one end of the head to the other, lubricate the first valve with molybdenum-containing or engine assembly grease and seat it in the head. Lubricate the valve stem with clean engine oil.





5. Using a vernier caliper, check the installation height of the valve stems of each valve one by one (the distance from the spring seat to the end surface of the valve stem).

Attention! If the head repair was performed in a car service workshop, this parameter will already be adjusted properly.

If any measurement exceeds the specifications, replace the valve in question and repeat the test. If replacing the valve does not correct the situation, the valve seat is too deep in the head and the head must be replaced.



6. Place the valve springs and their retainer on the rod.

Attention! Valve springs are installed with coils with a shortened pitch towards the head.

7. Using a special tool, compress the springs by lowering the plate, then install the split lock crackers into the open groove on the valve stem. To temporarily fix the crackers until the tool is released, lubricate them on the inside with thick grease.



8. Repeat the procedure for the remaining valves. Make sure that all components are installed strictly in their original places.

9. Installation of the camshaft(s) and rocker arm assemblies is carried out after the head has been completed in a reduced kit (see Section Alternative options for engine repair schemes).

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