Drive Axle Assembly Leak Inspection
What is a drive axle?
Drive axles are responsible for transmitting power from the differential to the wheel hub.
How does a drive axle work?
There is no set replacement schedule for stabilizer bar bushings, through most vehicles will need to have them changed at some point. A good time to replace the stabilizer bar bushings is when they being to make a squeaking sound when the vehicle is going over bumps or through turns, or when the sway bar links are being replaced.
What are the symptoms of a bad drive axle?
The symptoms of a drive axle leak are very clear. For straight axle vehicles, the backing plate for the brakes will have fluid draining on, or from behind it. If the leak has entered the drum brake assembly, the brakes may not function with the expected amount of stopping force. Leaks may also develop from the bottom of the differential cover, or input shaft seal. Both of those leaks will develop a drop from the bottom of the differential housing. For CV axles, the leak is easy to spot, as axle grease will coat everything around the torn boot. If the transmission or differential output seal is leaking, the axles may sling that fluid around the wheel wheel and undercarriage while driving.
Can I drive with a bad drive axle?
Driving with an axle leak is not particularly dangerous or hazardous to the vehicle, except in the case that the brakes are not performing properly due to fluid contamination. Vehicles with braking issues should not be driven. Concern should be taken for how long a component has been leaking. If the leak has continued long enough, the leaking component may be in danger of mechanical failure. If any mechanical noises are heard from the transmission or differentials, the vehicle should be inspected as soon as possible.
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