Cummins diesel engine failure analysis of common procedures

troubleshoot operation is a systematic project, so make Cummins diesel engine as a whole (a system), but not as a set of components. Failure to grasp the whole situation, have a comprehensive  led perimeter displays of the operator to observe the engine, and make the necessary checks and to be pointed out that the cause of the failure analysis.
failure to understand the phenomenon
First of all, to listen to and understand the failure to report symptoms. Some signs of failure may be vague, while others may be more specific breakdown.
Although there are many cases of failure can be very quick and simple access to understand, but some people will 2011 sonata dvd of some examples of maintenance, failure analysis is often made on the first conclusion, we can not rule out these problems. The reason why these situations occur, because there was no learned some important information, or to ignore these important cases.
for maintenance personnel, the employer must, in particular to the actual operator asking, so you have a full understanding of failure problems. In some cases only the operator knows, and you must understand these situations. There are other situations, but only by observing the engine is running or after the demolition of some parts can be found.
some of you may recall a similar failure is a special way to exclude. However, the same fault, not always use the same method to deal with.
maintenance personnel can be in the form below to ask questions about data and information needed to diagnose:
1. Diesel usage
failure before any abnormal noise? A load or light load operation? Acceleration or deceleration? Oil pressure or temperature has changed?
whether there was dust or smoke is not normal? climatic conditions? wind much?
road grade at the time how? first aware of how the failure? oil, fuel, coolant consumption much?  buy full lace wig change? How the concentration of smoke?
engine throttle response is sensitive? slowdown normal? stands satisfactory? cold start satisfactory? have been stalled or lack of fire you?
What fuel to use? fuel level and source of what? idling or running at full speed when the surge it? can idle for a long run?
2. Maintenance history
diesel engine is repaired recently? What kind of maintenance?
happened before this failure? Last revised at what time? Recently when oil replacement and the fuel filter?
maintenance system is strict? how to obtain and store the fuel: oil used in the maintenance category and what level?
diesel engine or the number of how many km h? who to repair or adjust?
replace the oil filter when evening bag full-flow oil filter of the filter do? find any metal impurities do?
3. Observations
a clean or dirty diesel? Belt tension situation? Outside without oil, fuel or water leakage? There have been overheating it?
on diesel has made temporary repairs (parts not tighten, broken parts, etc.).
how idle the engine sound? Pulley any chatter put it? Recent repair or replace any parts you?
diesel engine on all or part of the non-standard parts ? whether the adverse pipeline?
oil oil, water and fuel oil level satisfactory it (if it involves the bearing problem, pay attention to the oil situation. have occurred in this case, due to lack of oil to the bearing damage, but only after the operator and then to inject new crankcase oil).
in demolition, and whether the diesel smell, coke, oil sludge, whether under the rocker cover and other adverse conditions?
4. Mechanic before starting maintenance issues to consider
simply ask and understand the situation, not solve any problems. Therefore, you must know before maintenance and fault-related situation, see the interdependence of each issue in order to make judgments.
use all available led waterproof Switching Power Supply with the existing test, the thought process (thinking) is helpful, but not always want to use.
mechanics must be familiar with Chaiyou Fan type, equipment type and operating knowledge. Diesel engine equipment such as torque converters, coolers, and variable speed control and so must be considered.
majority of diesel users to unnecessary downtime and loss caused by premature removal are offensive, so attention should be paid in a planned and targeted maintenance, repair time can make a thorough and a success.
any diesel engine parts because of a problem, may affect the operation of the machine, so you must have extensive experience in identification of diesel engine operation, troubleshooting successfully important condition is to use your knowledge of the diesel engine and parts operation knowledge to troubleshoot the problem, which is a mental logistics activities.
and troubleshooting to find some checks to be carried out, it is not difficult to be done, check the information must be the best backpacks failures. Can not say that the diesel engine out of your eyes with the same last week, a diesel engine failure, that failure on the same reasons.