Dodge Cummins Diesel Forum - Reply to Topic
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

Thread: Factory finned rear diff cover Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
08-27-2019 08:58 AM
tsconver Installed the DOR spacers last night. Now it has plenty of room. Pretty sure it was fine before but I had ordered them so I installed them.
08-26-2019 10:57 AM
Jimmy N.
Quote:
Originally Posted by KATOOM View Post
Interesting that adding a MH helped... What exactly did it help? Did it just lower temps or did it reduce fatigue on the parts you noticed were already showing signs of stress?
Can't say that I know how, or even if, it helped.

On that one (a '10 2500) I foolishly didn't break it in correctly, and then outdid myself in stupidity and didn't change the fluid until after several thousand miles.

When it finally got on the lift, it wasn't a pretty sight. Almost all the paint had burnt off the cover and the "fluid" inside was black, and had lumps in it.

Can't recall what fluid went in, but the cover was cleaned and repainted. Only to find that after a 1,000-mile trip the paint was gone, again.
So it was in a bit of desperation that the MH cover went on, with Amsoil 75W-140, for the return trip.

Since powder coat holds up to heat better, I don't know how much cooler it ran, if at all.
What I do know is that the friend who bought that pickup still drives it, and has towed quite heavy with it, without any problems.
08-26-2019 12:45 AM
KATOOM
Quote:
Originally Posted by Jimmy N. View Post
In one case I traded the pickup in on a new one (no parts were available), in another I changed to a MH cover and to 75W-140 and it seemed to have helped (originally the paint burnt off the cover, twice), and with the current 3500 I'm cautiously optimistic that my frequent cleanings of the magnet will keep it alive.

Those were/are AAM examples, all bone stock, but I have many more examples, mostly with Dana axles, that were modified axles.

Big difference between welding the drain plug shut and welding the cover to the housing, by the way.
Interesting that adding a MH helped... What exactly did it help? Did it just lower temps or did it reduce fatigue on the parts you noticed were already showing signs of stress?

And magnets stuck to the inside of a metal cover are safe to run. I wouldnt place one on the inside of the housing though.
As you already know, the MH has a magnet on the drain plug and the fill dip stick is magnetized as well. That should be more than enough unless there's something wrong or the R&P was installed incorrectly.

And my bad... For whatever reason I thought you were saying the cover should be welded on. Didnt really know why either but...its clear we all have an opinion.
08-26-2019 12:28 AM
Dogpatch
Quote:
Originally Posted by SRich12 View Post
I just picked one up a few weeks ago, yes they are higher than they used to be but so is everything!!!https://www.ebay.com/itm/Dodge-GM-03....c100290.m3507
The description on eBay says fits 3500 Truck Years 03-14?
08-25-2019 11:34 PM
6only
Quote:
Originally Posted by tsconver View Post
Just installed this and factory swaybar and trackbar clear fine on a 2018 2500.
Good to know! Just found one I had bought for my 17 3500 in a pile of stuff in the garage. Glad to know it will work on my 18 2500
08-25-2019 11:12 PM
Jimmy N.
Quote:
Originally Posted by BFD View Post
I think the magnetic plug is enough.
Normally I'd agree with that. But when the factory plug can't hold all the crap, it could use some help.
08-25-2019 11:00 PM
BFD I think the magnetic plug is enough. FWIW, if you get UOAs that show low wear metal but you have significant metal on the magnet... Believe the magnet, not the uoa! Craig
08-25-2019 10:49 PM
Jimmy N. Realistically, a good modern magnet would most likely stay just fine inside the housing, on a flat surface, or on the inside of the cover.

One of these days I'll install my finned AAM cover, and then I'll have to look into a new spot for a magnet.
08-25-2019 10:43 PM
G. Mcpherson I was thinking the same thing. Have seen a couple of photos installed inside bottom. I would worry about that.
08-25-2019 10:41 PM
Jimmy N. I'm not sure I'd trust any magnet in the diff housing unless it's epoxied in place, but I have a good Amazon sourced one towards the bottom of the cover, outside.

That's in addition to the factory level plug's magnet.
08-25-2019 10:35 PM
G. Mcpherson So what is a Good source for a Magnet to install in the Differential?
08-25-2019 08:36 PM
Jimmy N.
Quote:
Originally Posted by KATOOM View Post
Did you do anything about the discovered R&P issues, like park and fix it, or did you refill and hope for the best? And it would be interesting to know if these problems were found on factory installs or were they aftermarket, and...who did the job? I make it clear on threads about R&P swaps that I dont agree with differential gear/carrier work being a DIY job...

In regards to welding the cover on, the Ford 9 inch is an perfect example of a differential that doesnt have a removable cover.
In one case I traded the pickup in on a new one (no parts were available), in another I changed to a MH cover and to 75W-140 and it seemed to have helped (originally the paint burnt off the cover, twice), and with the current 3500 I'm cautiously optimistic that my frequent cleanings of the magnet will keep it alive.

Those were/are AAM examples, all bone stock, but I have many more examples, mostly with Dana axles, that were modified axles.

Big difference between welding the drain plug shut and welding the cover to the housing, by the way.
This thread has more than 12 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome