What could be the cause and nature of the front differential leak symptoms? Read this article from JunkCarsUs experts.
Differential malfunctions
Since any differential is a set of axles and gears, there is no surprise in the fact of the relatively frequent failure of this unit. It is operated in very harsh conditions so that the breakdown can occur at the most unexpected moment. However, some things will indicate to a motorist the necessity of passing maintenance. Specifically:
- Increased noise;
- Occurrence of knocks and bumps;
- Leakage of grease.
JunkCarsUs customers often forget this, but still, the most serious malfunction is axle jamming. This happens only in cases where the motorist ignored the problem of increased noise of the differential, regular knocks, and grease leakage. Typically, the need for inspection by a specialist at the service station is indicated by the latter. We recommend measuring the temperature of those elements of the transmission, which include a differential. For example, the crankcase – its temperature should be in the range of 50-60 °C. We also recommend checking the condition of the lubricant and topping up if necessary.
Oil leakage can be the cause of differential failure. Oil usually flows through oil seals and special gaskets, which must be replaced immediately. If the oil is lacking or heavily contaminated, the mechanisms begin to make noise and wear out at a high rate. It is extremely important for the motorist to avoid dry friction – it will cause damage to the satellites, bearings, and gear teeth wear. Often, the differential malfunction can be identified even before the visit to the service station. For this purpose, you will need a partner. Here is what you need to do:
- Put the car in neutral gear;
- Suspend the drive axle on the jack;
- Spin the wheel first in one direction and then in the other direction;
- Ask your partner to do the same with the other wheel;
- If the wheels crank in both directions without noise – the differential is correct.
Even after such a check, the motorist should address a specialist for further diagnostics. However, a part of problems can be solved through car repair. For example, you may disassemble the unit, wash it in petrol and then replace worn-out bearings, satellites, and seals – they are more likely to fail. But if the cup, spline joints, and gears are damaged, it is often necessary to replace the entire unit and related parts.
Conclusion
The differential is an important part of an automobile transmission. If the transmission receives, converts, and then transmits the torque to the vehicle wheels, then such a unit as the differential ensures the normal transmission of this very torque and is responsible for the driving qualities of the vehicle. For example, provides maneuvering on and off the highway. Without a differential, it is impossible to create either a truck or a car. And if you try, its operation becomes very dangerous. At least, from the moment the vehicle develops high speed or starts to enter a corner.
