Attention: if the block plugs fall into the cooling jacket, it will be almost impossible to remove them.
1. Remove all protruding parts from the block.
2. Drill small holes in the center of the plug and use an inertia puller to remove them.
Fig. 14.2 Knocking out the plug with an inertial puller
3. Remove any remaining gaskets and seals from all mating surfaces. Do not damage the surfaces.
4. Remove the main bearing booster and caps (or assembly of lids) and remove the bearing shells. Mark the main bearing caps by numbers and installation direction.
5. Remove all threaded plugs from the oil gallery. The plugs are tightened quite tightly, so you may have to drill them out. Use new plugs during assembly.
6. If the engine is very dirty, find a way to clean it with a steam cleaner.
7. Thoroughly clean all oil channels with running hot water, dry the block and lightly lubricate the welding surfaces.
8. Using taps, clean all threaded holes from deposits, corrosion and residues of locking adhesive. If compressed air is available, blow out all holes in the block. At the same time, flush and clean the threads of all bolts.
10. Install the main bearing caps and tighten the mounting bolts by hand.
11. Lubricate the block plugs with dried sealant and install them in the block. When installing the plugs, you can use either a special tool or heads of the appropriate size, as shown in the figure.
12. Lubricate the threaded plugs with non-drying sealant and install them into the oil gallery.
(The original can be found on the resource: hondabook.ru)