Replacement Diff Covers

[Lancer]

Hi - I'm new here I've read that some people have said that the front diff can destroy itself under certain conditions. I was wondering if anyone had tried some of the replacement diff covers for the DANA 30- like the ARB cast iron cover, and if it would strengthen the diff- or have I misunderstood something?

 

[jeepkj02]

The diff usually cracks at the pinion. Many people use a collar to strengthen the area. A cover probably won't do anything, and is useless as it is covered by the front skid.

 

[Lancer]

Thanks.

 

[JeepJeepster]

If you look at the Dana30a on the liberty you will see that it does not have a typical cover. The cover on it is actually used to mount the front differential in the Jeep.

And like jeepkj02 said, the diff cracks at the pinion. The pinion tries to climb the ring gear and splits the entire case in half.

Only thing thats been thought-up is to buy a 3-9/16in collar and bolt around the pinion. Weather or not it helps, no one knows. Ive not read about a diff being broke with one on yet.

You must be registered for see images attach

 

[tjkj2002]

You can not mount a aftermarket diff cover on the front D30A.The aftermarket cover will be in the way of one of the 3 front diff mounts.The front skid is for the front diff protection.

 

[Lancer]

Thanks for all of that information guys - stopped me buying unusable kit! Where can I get one of those collars from? Sorry - just done a search and read the posts - especially TJ's.

 

[LibertyFever]

Please correct me but I think the Dana30A axle is made of aluminum, that's why its prone to breaking.

 

[jeepkj02]

Please correct me but I think the Dana30A axle is made of aluminum, that's why its prone to breaking.

You are correct. The collar is SUPPOSED to stop that. I'll see if I can find the part number.

 

[jeepkj02]

Here you go:

Go to http://www.mcmaster.com/

Type in 60665K61

Here is a LOST thread about it there are many more on LOST. Search "diff collar". http://www.lostkjs.com/forum/phpBB2/viewtopic.php?t=26526&highlight=diff+collar

 

[Lancer]

Thanks - I really appreciate the help and info.