Common questions

How do you remove an axle on a GM 12 bolt?

How do you remove an axle on a GM 12 bolt?

The axles are held in by “C” clips. To get to them, remove the back cover, and rotate the carrier until you see a small bolt that holds the cross pin in place. (center of the carrier) This pin keeps the spider gears from walking out. carefully slide the pin out, then push in on the axle to expose and remove the c clip. The axle will then slide out.

What kind of axle does a 12 bolt Chevy have?

This is the Moser Engineering 12-bolt axle assembly. As you can see, the Chevy 12-bolt differential is one stout axle, and it was the rear axle of choice for GM muscle cars and many GM competition cars.

Can You disassemble a Chevy 12 bolt differential?

As long as you take the proper steps to ensure that the shims go back in the correct location, the entire unit can be disassembled, cleaned, and inspected, with the exception of the pinion gear. This Tech Tip is From the Full Book, CHEVY DIFFERENTIALS: HOW TO REBUILD THE 10- AND 12-BOLT.

How did the GM 12 bolt rearend get its name?

Although not technically how it got its descriptive name, the easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover in place. In actuality, the term 12-bolt is due to the 12 bolts holding the ring gear to the differential.

The axles are held in by “C” clips. To get to them, remove the back cover, and rotate the carrier until you see a small bolt that holds the cross pin in place. (center of the carrier) This pin keeps the spider gears from walking out. carefully slide the pin out, then push in on the axle to expose and remove the c clip. The axle will then slide out.

Is the rear end of a 12 bolt truck interchangeable?

Early truck 12-bolts had axles with 12 large axle splines. The differential carriers are also narrower than those in passenger-car units. They are not interchangeable. That doesn’t mean the truck rearend is not capable of receiving performance upgrades. To the contrary, aftermarket 30-spline differentials and axles are available.

When did GM stop using 10 bolt rearends?

After 1972, General Motors was only installing its 10-bolt rearend in cars, but the 12-bolt remained an option for trucks until 1987. When looking at a 12-bolt rearend, it is important to know that 12-bolt axle assemblies use different components for cars and trucks.

As long as you take the proper steps to ensure that the shims go back in the correct location, the entire unit can be disassembled, cleaned, and inspected, with the exception of the pinion gear. This Tech Tip is From the Full Book, CHEVY DIFFERENTIALS: HOW TO REBUILD THE 10- AND 12-BOLT.

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Ruth Doyle