Failure case
Model: R200-5
Failure phenomenon: The engine suddenly stopped during work, and the engine could not be started
1. I learned from the user that the user has just maintained the machine soon
2. It can be seen from the oil in the engine oil pan that it is the new oil just added
3. The engine oil filter element and the engine oil pan contain more metal debris
4. The engine can't drive the car, it is likely that the phenomenon of holding tiles has occurred, and the lack of oil is the most likely reason.
5. From the bottom of the oil filter element, more oil traces can be seen, which is obviously the place where the oil leaks.
Fault cause: It can be judged from the above aspects that the user was careless in maintenance and did not tighten the oil drain screw, which caused oil leakage, oil shortage and engine holding bush when the machine was working.
Troubleshooting experience:
1. Finding details is an important way to judge such failures, such as "the user has just done maintenance" under the oil filter element can see more oil traces "and other information is very important
2. To grasp the common mechanism of some faults, in order to make the fault judgment less detours
