The modern designs of engines has cut off most of the factors that usually cause engines to develop faults regularly, such includes: automatic fault detecting system, diagnosis suggestions, and digital indicators, etc. All these has made the engine repair and maintenance appear simple to some individuals, but the facts still remains that most mechanical engineers still find it difficult in carrying out repair in these modern engines. Though the attached mechanisms are good and will aid in fault detection but what of the situation where the fault detector is the one having the fault alongside with some parts of the engine? How can the engineer know the source of the fault in such condition? These and many more questions have made it necessary to have a thorough knowledge of modern engines before working on any of them.
Recently, a man complained to me of how his new jeep developed a vibration such that anytime his speed exceeds 80km/hr. the motor will start vibrating while on motion, he took the vehicle to a mechanic who listed some items for him to buy because they need to be replaced. At the end of everything he spent more than N200,000 for the repair. Though the sign stopped but he realized after few days that the attached to the bumpers to automatically stop the vehicle from hitting nearby objects during turning had stopped working after the mechanic worked on the , taking the back to the mechanic he recommended buying new which after their installations the problem persisted till date, a very sad story I would say.
Modern uses drive system which is mostly used with belts in their functions, and these belts do get weak over a period of time depending on the usage and quality. Though this is a minor issue in but its negligence had caused a lot of wrong diagnosis in detection and repair.
When a weak develops its signals it may be wrongly detected by any digital devices to mean another thing which may lead to buying and changing of parts that are not actually the real cause of the problem, one way to avoid such incident is to for the specified period of time any in your is supposed to stay before changing it.
Some common faults weak could cause are;
The weak can cause a serious ignition problem because the from the ignition motor needs to transmit a rotating motion to the flywheel or shaft at a high and instantaneous speed within a short time. So if the had gone weak it will make the motor transmission speed to be reduced such that if the ignition system is not in good condition the may find it difficult to start.
Most uses to circulate the water from the to the internal parts of the , the action is usually a continuous one provided the is in its operational state. When the that drives the pump which is usually connected to the major shaft had gone weak or loosed, the pumping speed will reduce thereby affecting the rate of water circulation and causing the to be higher than normal.
Another sign of weak or loosed belts could be a slight reduction of the power output which is as a result of its reduced speed. As you can see in the above diagram, if the has many belts connected to it and some or all of them has gone weak it will cause its dragging to increase thereby reducing the overall speed which is clearly indicated by its output or speedometer.
POSSIBLE SLIPING OFF THE OR TEARING APART
Another problem weak and loosed could cause is to slip off or tear apart from the if extra is applied trying to its speed, this usually occur when an is operating at a very with weak belts. And incidents like that will lead to other serious to the main and other components.
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Originally posted 2017-07-31 02:21:41.
A mechanical engineer and an NDT inspector by profession. However, I love blogging and sharing of knowledge for human intellectual development, especially relating to engineering fields, environment, and science trending updates. “Engineeringall.com” is a platform for any individual with similar passion, to do so; use the “PUBLISH YOUR ARTICLE” page at the MENU to share your personal ideas, researched knowledge, or discovered incidents, etc.to those in the engineering & & the general online communities across the globe. If you love this post please share using the social buttons below.