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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Laderhosen on March 13, 2011, 07:46:36 pm

Title: Replacing ring and pinion gear - How easy??
Post by: Laderhosen on March 13, 2011, 07:46:36 pm

I need to re-gear the axle in the front of my '87 Blazer as my two axles have different gearing (long story...)

How easy is it to do? Is it something I could tackle on my driveway?? Is it possible to do without removing the axle from the truck??

Do I need any special tools?? Anybody got any tips... And how long should it take me???

Any help is appreciated... Thanks....

Title: Re: Replacing ring and pinion gear - How easy??
Post by: Blazin on March 13, 2011, 11:26:12 pm

It can be done in the truck.
You will need a dial indicator, and a mount that bolts to the axle, or a magnet mount base for the indicator. A Helms or = service manual will be allot of help. You should install new side seals, there is a tool that installs them with ease, its basically a jacking bolt. You tighten it and press the new seals in from against the other side of the inside of the diff. When you buy your gears ask them to include detailed instructions. You will need to crush the crush sleeve. It takes some brute force, and ignorance, a quality breaker bar and a long pipe, or an impact gun with some serious umph.

Title: Re: Replacing ring and pinion gear - How easy??
Post by: Laderhosen on March 15, 2011, 02:19:41 pm

Thanks. What is the dial indicator used to measure??

Title: Re: Replacing ring and pinion gear - How easy??
Post by: Blazin on March 15, 2011, 09:32:47 pm

The back lash between your ring, and your pinion gear. Don't quote me but I think its around / between 8 or 9 minimum, and 13 or 14 thousandths maximum.

Title: Re: Replacing ring and pinion gear - How easy??
Post by: VileZambonie on March 15, 2011, 10:49:32 pm

Do a search on here for ring and pinion installation.