Rear differential overheating on hard pulls - Dodge Diesel - Diesel Truck Resource Forums

3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Rear differential overheating on hard pulls

Reply

 
 
 
Old 01-01-2018, 01:00 PM
  #1  
Registered User
Thread Starter
 
Join Date: Oct 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rear differential overheating on hard pulls

when pulling 36 foot horse trailer in mountains rear diff gets super hot and pushes fluid out pinion seal. diff not noisey and very little play when drive shaft rotated.
Mabe heavier diff grease?

Last edited by barbed wire; 01-01-2018 at 01:20 PM. Reason: Correct spelling
barbed wire is offline  
Reply With Quote
Old 01-01-2018, 01:10 PM
  #2  
Banned
 
Join Date: Apr 2006
Location: southern mn
Posts: 529
Thanked 129 Times in 83 Posts
Originally Posted by barbed wire View Post
when pulling 36 foot horse trailer in mountains rear diff gets super hot and pushes fluid out pinion seadiff not noises and very little play when drive shaft rotated
Mabe heavier diff grease?
I have no idea what a seadiff is but I assume you were referring to the pinion seal? I wonder if your axle vent tube is plugged?
deere country is offline  
Reply With Quote
Old 01-01-2018, 02:00 PM
  #3  
Registered User
 
Join Date: Aug 2007
Location: Edmonton, Alberta
Posts: 3,893
Thanked 29 Times in 27 Posts
I have seen where a pinion seal is leaking badly but rather than replace the seal someone has drained the oil and actually put grease into the rear end just to sell the vehicle. The oil should be a synthetic gear oil at least 75w90 and 75w110 if you are towing hard.
Busboy is offline  
Reply With Quote
Old 01-02-2018, 11:45 AM
  #4  
Registered User
 
BILTIT's Avatar
 
Join Date: Nov 2010
Location: Lloydminster SK/AB
Posts: 2,198
Thanked 7 Times in 7 Posts
Vent tube plugged or problems in diff.
BILTIT is offline  
Reply With Quote
Old 01-03-2018, 06:57 AM
  #5  
Registered User
Thread Starter
 
Join Date: Oct 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by BILTIT View Post
Vent tube plugged or problems in diff.
she's going into the shop gotta be a bearing or something to cause that much heatThanks
barbed wire is offline  
Reply With Quote
Old 01-12-2018, 06:24 PM
  #6  
Registered User
Thread Starter
 
Join Date: Oct 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Pinion bearings discolored. Been hot. Replaced pinion and carrier bearings.
Should be good to go.
barbed wire is offline  
Reply With Quote
Old 01-12-2018, 06:26 PM
  #7  
Registered User
Thread Starter
 
Join Date: Oct 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Pinion bearings discolored from heat. Replaced pinion and carrier bearings. Should be good to go.
barbed wire is offline  
Reply With Quote
Old 01-13-2018, 10:26 PM
  #8  
Banned
 
Join Date: Apr 2006
Location: southern mn
Posts: 529
Thanked 129 Times in 83 Posts
So did you determan a cause for the oil getting hot?
deere country is offline  
Reply With Quote
Old 01-15-2018, 06:34 AM
  #9  
Registered User
Thread Starter
 
Join Date: Oct 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Pinion bearings were discolored from heat.

Originally Posted by deere country View Post
So did you determan a cause for the oil getting hot?
Replaced pinion and carrier bearings. Should be good to go.
barbed wire is offline  
Reply With Quote
Old 01-15-2018, 07:33 AM
  #10  
Banned
 
Join Date: Apr 2006
Location: southern mn
Posts: 529
Thanked 129 Times in 83 Posts
I get that part but, they don't get hot for no reason. Their was a cause that allowed them to get hot.

What is going to prevent them from getting hot again if their was no cause determined?
deere country is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
deking1970
12 Valve Engine and Drivetrain
0
01-29-2009 10:19 AM
Bersaglieri
12 Valve Engine and Drivetrain
5
07-31-2007 12:44 AM
~Angry Tractor~
12 Valve Engine and Drivetrain
8
12-16-2006 08:44 PM
Bobcat698
12 Valve Engine and Drivetrain
19
11-03-2005 10:40 PM
Turbo Deeezle
Performance and Accessories 2nd gen only
7
01-20-2005 06:46 AM


Thread Tools
Search this Thread
Quick Reply: Rear differential overheating on hard pulls


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.