Skip the auto shop - Our mechanics make house calls

Q: My spider gears in the rear end keep busting. Chunk isn't harmed. What is the problem?

asked by on

My spider gears in the rear end keep busting. I've replaced them twice, and both times they've only lasted a month. Chunk isn't harmed. Why do they keep busting?

My car has 267789 miles.
My car has an automatic transmission.

A: Hello there, thanks for writing in. The spi...

Hello there, thanks for writing in. The spider gears are only used when you are turning left or right, unless you have two differently-sized tires on the same axle, in which then the spider gears will turn all the time.

If you have a limited slip rear end, then your clutches will eventually be worn out and may need repairing or replacing. Also, when your spider gears are not moving, they are applying power straight ahead, and if you overload the rear end by exceeding tow capacity, you may damage the spider gears.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: esp bas light on dash keeps coming on

There is a TSB (technical service bulletin) for this issue. It does say the brake switch is the source of the problem. At least it can be the source of the fix. But it doesn't say replace the switch. Apparently...

Q: Put new fuel pump, still won't start

Hi, it sounds like you have taken all the proper steps. The concern with the fuel gauge is a common issue when replacing the fuel pump. The fuel level sensor is a separate component attached to the fuel pump. This...

Q: Transfer case leak

Hi. The transfer case leak is a very common issue with these vehicles, especially at high mileage. The problem occurs when the pump for the transfer case begins rubbing against the side of the case. Over time, it will drill...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.