Old European valve oil seal, camshaft, 8 hydraulic tappets, 2 rocker arms, cylinder gasket, and piston ring, plane bearing, lower arm ball head, change warm water pipe, change ignition coil
Due to the addition of fake oil, the camshaft grinded off a convex head, so the one-stop dragon changed several things for a long time, and it took almost two weeks to disassemble and repair. Taobao bought some tools, delayed and stopped, and handed in homework.
1. It doesn’t take much time to dismantle, it takes a lot of time to clean the sludge and accumulate carbon, and more than 10 cleaning agents are used.
two。 Before measuring the cylinder pressure, it was found that the fourth cylinder was leaking, the cylinder pressure was 8.5 bar, and the normal standard value was 12 bar. After disassembling and disassembling the valve, it was found that the valve was leaking, and after the valve was washed and cleaned by carbon deposition, the test became better and did not leak. Pour gasoline into the test to observe no leakage, saving the need for grinding the valve.
3. The valve is sealed and installed, just press it in.
4. The camshaft buys the camshaft of the original car, serial number: 93244916, installation is not complicated, take off the right cover and you can drag the whole one out.
5. The original old piston ring is not worn, and the normal size range is tested with a plug ruler, but for some reason, the position of the crankshaft of the 1Magi 4 cylinder is very black, and the position of the crankshaft of the 2Magee 3 cylinder is very bright, considering the downward string of exhaust gas in the piston ring of the 1meme 4 cylinder. Therefore, consider replacing the piston ring, cleaning only with gasoline, without the use of chemical cleaning agent.
The first ring is a flat ring, the second ring is an outer ring chamfered ring, and the third ring is an oil ring, which is staggered during installation.
6. The hydraulic tappet should be soaked in oil and pressed down to press all the air out, all the bubbles out, and the downward pressure will not move.
When dismantling the hydraulic tappet, if it can not be removed and pulled up, it will be knocked down with a glue hammer, knocked down a little bit, pulled up again, and lubricated with some oil, and then pulled up.
7. Clean the oil passage and get all the oil passage in the cylinder head.
In the direction of the lower cylinder body to the cylinder head, there is only one upper oil hole on the exhaust side, and the other 6 are all downflow oil return holes directly connected with the oil bottom pot (including 2 holes on the left and 2 holes on the right side. 2 holes on the intake side), the upper oil hole enters the inner part of the cylinder head, branches to the middle hole of the eight hydraulic tappets, and one hole continues upward to the inner core of the camshaft. The pit of the hydraulic tappet has an air vent connected to the pit surface at the bottom of the pit, which is estimated to be used for downward pressure when installing the tappet.
8. The cylinder gasket is rotten, good luck is only leaking out, and there is no series of cylinders.
9. The two rocker arms of the fourth cylinder are dry ground into pits, replaced, the rest are fine, continue to use.
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