[Junk] Repair and restore the broken plate compactor MVC-F60 without noticing that it is out of oil. 

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By the way, this time is a video of repairing a machine of an acquaintance's pavement shop. It seems that he was using the machine without engine oil and it stopped working. If you can fix it for about 20.000 yen, I would like you to fix it. The market price of used machines of the same type is about 60.000 yen.
1:10
The clutch works to idle at low speeds (idling), and transmits power when the engine speed exceeds a certain level.
1:55
The fuel tank is equipped with a fuel filter to prevent dust from entering.
2:30
There is no compression and it can be easily rotated by hand. It seems that the crankshaft hits something and stops moving.
4:10
The connecting rod is a part that converts the vertical movement of the piston into the rotational movement of the crankshaft. The connecting rod cap is severely damaged due to poor lubrication. Connecting rod = 4.680 yen
5:10
The camshaft and timing chain seem to be safe, and there is no wear.
5:30
Aluminum sticks to the connecting rod mounting surface, so it is unlikely that it can be removed cleanly by polishing, so replace it. Crankshaft = 15.100 yen
5:45
The bearings seem to be safe, and the connecting rod is made of aluminum, which gives the impression that it broke earlier than other steel parts.
5:55
The skirt part of the piston is a little missing, but it seems that it can be reused, so I will correct it and use it.
8:10
To prevent the piston clip from coming off, shift it to the position opposite to the groove.
8:30
I think there are pros and cons, but since there is a possibility of abnormal wear, I installed the piston in reverse.
8:40
An oil pump is not installed in such an engine, how to send oil to the piston sliding part ... The corner-like part (dipper) at the bottom of the connecting rod scoops up the engine oil and lubricates it. I will.
9:00
Please note that the piston rings have different orders and orientations. This time, an oil ring with integrated side rails is used.
9:35
Install the piston ring abutment with a 120 ° offset so that compression does not escape.
11:50
Decompression opens the exhaust valve a little during compression to improve startability. It stops working by centrifugal force.
12:30
The governor uses centrifugal force to keep the engine speed constant in an exquisite balance.
12:55
If the oil seal is not installed in its original position, it may cause oil leakage.
13:00
There are various types of liquid gaskets, and it is necessary to select the one that suits the application. In my experience, vibrating machines often use gray gaskets.
13:50
When the magnet attached to the flywheel passes through the ignition coil, a temporary current is generated momentarily and a large secondary voltage is generated. This action causes sparks in the spark plug.
14:20
By installing an insulator between the engine and the carburetor, the heat of the engine will not affect the carburetor.
15:30
Asphalt will be installed because part of the pavement is damaged. By heating the asphalt to a high temperature and rolling it, it will be fixed without any gaps.
The plate compactor repaired this time is used for compaction of crushed stone and asphalt. If it is not compacted, a gap will be created between the materials and the ground will be soft. By applying a certain amount of vibration, the gap is filled and a solid ground is created.
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#Details in the summary section
#Engine repair
#Junk repair

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