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Light Vehicle Driveline System Faults

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Published: Thu, 27 Apr 2017

The contents of a driveline system are clutch, transmission, shaft and wheel. It is an important part of a vehicle. Identifying and confirming the work requirement: the nature and objectives of the analysis and evaluation requirements are determined by the work instructions and reports used. Correct functioning of light vehicle driveline is accessed and interpreted. Throughout the work, equipments and social isolation requirements and personal protection needs are observed. Safety impacts of the work are responded according to the obligations and practices. There are also faults related to clutch, gear axle, wheel and it also has the remedies for it.

Light Vehicle driveline system faults:

Introduction:

The contents of a driveline system are clutch, transmission, shaft, axle and wheel. It is an important part of a vehicle. It can be said as the controllable parts of the vehicle. The gear or the transmission is the system which boosts torque and power. The clutch is the system which controls the transmission if it runs out of control. The wheel is why the front tire rotates to the wish we want. If faults are found in these any parts, it must be inspected well and remedies must be taken immediately in order to prevent it from damages. Special remedies are mentioned below in some faults which can be rectified by a person if a little try is given.

In several vehicles, problems may arise with the two system such as drive staffs and transmission system. The drivers are mostly concerned when transmission and driveline troubles arise. . However, it is very important to check out the causes before the replacement as it may be very expensive. The proper and systematic analysis and the evaluation of the right problem should be detected and then the actions for the repair must be undertaken.

Main body

Components of driveline system:

Driveshaft: it is a component mechanically builds in order to transmit torque. It is generally used to connect components of a drive train which cannot be connected directly. It is so because of the distance.

Clutch: This is a device which provides for the transmission of power from one module to another. The other module of the clutch is the brake. Clutch is used when the power of the transmission is to be controlled. It is employed with two rotating shafts. One shaft is attached to a power unit and the other provides output power.

Gearbox: it is responsible in order to provide torque or speed to a device under gear ratio from arotating power source. In vehicles a gearbox is connected to the crankshaft of the engine. The output of the gearbox is transferred through driveshaft which in order rotates the wheel.

Driving wheel: A turbine or a locomotive’s pistons drive the driving wheel. It is made of side rods coupling rods. Generally one rod straightly driven by the main rod and it is connected at the end of the piston rod. It is via the side rods, power is transmitted to the others.

Axle: It is a main shaft for a gear. The axle is fixed to the wheels which rotates with them or fixed to the surrounding. Before bearing and bushings are provided at the mounting points where the axle is provided and today it resides under the hole of the wheel. The shaft rotates with the wheel.

Identifying and confirming the work requirement: the nature and objectives of the analysis and evaluation requirements are determined by the work instructions and reports used. Correct functioning of light vehicle driveline is accessed and interpreted. Throughout the work, equipments and social isolation requirements and personal protection needs are observed. Safety impacts of the work are responded according to the obligations and practices.

Dianne Christensen-Herman, Transmission and driveline troubleshoot, January 2011

Prepare for analysis and examination: examination procedure is made to meet the motive of the work. Analyzed information on board diagnostic systems is used to identify system performance achievement. To select from the available quantity of choice, diagnostic process, sequence. Tests and testing equipments are made. Important tools and materials are found out in order to support the diagnostic process and are also prepared to use. The components required for the driveline system are prepared which include park-up, isolation and cleaning.

Implementing the methodology: the diagnostic course is to be followed with authorized methods and directions. Testing equipments are applied according to the requirements. Various findings found are analyzed and verified by using various processes. The results of the findings are fully examined according to the criteria. Valid and meaningful conclusions are made out of the available findings.

Selecting response measure: materials which can be used again are collected and stored for further use. The testing equipments are preserved and taken care of for further use and the waste materials which are not required are put aside or removed from the place of work. According to the workplace procedure, the area and the equipments are cleaned and also inspected.

Failure analysis and evaluation criteria are determined in order to rectify the faults and to effect variation in system characteristic. Light vehicles include both two wheelers and four wheelers. Driveline system consists of components like clutch, torque converter, manual transmission, automatic transmission drive shaft and final shaft. Module parts replacement and parts replacement is covered by the diagnostic. Driveline system faults includes abnormal gear wear, abnormal clutch operation, contamination, hard shifting, loose mounting etc.

Testing equipments: testing equipments consists of systems like compound level, pressure gauge, millimeters, tachometers, and computerized diagnostic system. Tests are needed to conduct. Various tests included are lubricant inspection, pressure, road testing, sensor integrity and function, solenoid operation, wiring and power control ECU integrity.

Information and procedure:

Procedures of the work place are to be regulated in order to use the tooling and equipment.

Procedures are to be followed for reporting and communication.

Component specifications are to be analyzed for testing equipment and material.

The design rules ro be followed must be the Australian design.

The regulation of the vehicle industry is to be evaluated and regulated.

When a constant nature of excitation is transmitted from the engine, the torsion response at various points is to be remained the same under various trails. A variation from the baseline response data is observed due to various minor cracks developed along the driveline.

Clutch fault finding:

When the clutch cable is broken.

When the adjustment in the clutch cable is found incorrect, it is a symptom of clutch faults.

Another symptom is that of releasing bearing of a broken clutch

Faults also contains such as wrong adjustment of the clutch cable.

Excessive clutch silk lining, contaminated clutch disc lining, faulty pressure plate are some other faults

Diagnose and Rectify Motor Vehicle And Transmission and Driveline System Faults

Gear faults:

Liquid leakage: in automotive transmission the color of the liquid is usually deep red. These fluids should not be confused with the main fuel which can easily be transferred to the transmission area via air. Removing the built up dirt is firstly necessary from the transmission area using steam cleaning.

Burned smell: it occurs when the engine is turned on at neutral transmission and also when the vehicle moves in neutral format.

Driving wheels fault:

There can be loose steering gear adjustments. It is than required to be adjusted to its specifications.

It can also happen due to steering gear mounting loosen and the remedy for it is tightening of steering gear bolts

The steering may sometimes be felt hard to be rotated especially it is observed in power steering and the reason behind is may be due to low tire pressure.

Sometimes the wheel bearing may also be loose which must be replaced with the new ones.

Drive shaft faults:

Worn u-joints slip joint wear, or a faulty center support bearing are mostly the reasons for the noise found in drive shaft. Also grinding from the driveshaft may be caused by worn universal joints. The joint ends up being dry, causing the rollers to wear.

Axle fault:

It includes improper pinion bearing

It also includes excessive gear tooth backlash variation

Another fault is the pitch lineout run out

And also cocked pinion bearing is a major fault.

Homer Rahnejat, Steve Rothberg, multi-body dynamics-monitoring and stimulation techniques.

Conclusion:

In this projects highlight is made on the different light vehicle driveline system. It projects on how faults may occur and also what are those faults. For some of the unknown faults remedies are suggested. But still instead of trying hard and getting the matter more complicated, a thorough examination or inspection of the vehicle’s driveline system may help to sort out the problems more easily. A vehicle driveline system faults comprises of the drive shaft and transmission system. Several vehicle problems may take up due these systems and the early detection is very important to avoid heavy expenses.

Check the transmission fluid with the help of dipstick. If the insufficient fluid in the transmission is observed, there is a probability of the leak. Determination of the cause is important before making the repair.

If the vehicle is making noise while driving, this will indicate that the vehicle is running on low fuel level or dirty transmission fluid or may be clogged. The transmission filter should be changed.


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