RV.Net Open Roads Forum: Tech Issues: Let's talk Dana 80 axle temps

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Let's talk Dana 80 axle temps

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next
Sponsored By:
Missionstreet

PA

New Member

Joined: 03/30/2021

View Profile


Offline
Posted: 07/21/22 11:12pm Link  |  Quote  |  Print  |  Notify Moderator

I've noticed my rear hubs are awfully hot to the touch this summer after cruising at no more than 50 mph for an hour on the highway.

No dragging brakes here. I am going to get a contactless thermometer soon.

Dana 80 rear, Ford says 9,450 lb on the GAWR rear, is this derated?

bucky

Raleigh metro

Senior Member

Joined: 05/07/2003

View Profile



Good Sam RV Club Member

Offline
Posted: 07/22/22 03:10am Link  |  Quote  |  Print  |  Notify Moderator

How's that fluid level? They play with GVWR but I see no reason that they would play with axle ratings. What are you towing?
Why don't you have an infrared thermo already? If you have a covid forehead tester you already have one.


2005 Cummins 3500 2WD LB quad cab dually pulling a 2014 Blue Ridge 3025RL


PButler96

Midwest

Senior Member

Joined: 06/13/2022

View Profile


Offline
Posted: 07/22/22 03:22am Link  |  Quote  |  Print  |  Notify Moderator

bucky wrote:

How's that fluid level? They play with GVWR but I see no reason that they would play with axle ratings. What are you towing?
Why don't you have an infrared thermo already? If you have a covid forehead tester you already have one.


Perhaps his rear end has Covid?


I have a burn barrel in my yard.

theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 07/22/22 07:40am Link  |  Quote  |  Print  |  Notify Moderator

Switch to a full synthetic gear lube.

valhalla360

No paticular place.

Senior Member

Joined: 08/19/2009

View Profile



Good Sam RV Club Member


Posted: 07/22/22 08:54am Link  |  Quote  |  Print  |  Notify Moderator

I assume we are talking about the hubs (out by the wheels), not the differential (aka: pumpkin) in the middle.

Unless you are heavily loaded or have other reason to believe you are putting more strain than normal on the bearings, I would pull them apart to make sure they still have grease in them and there is no other apparent damage.


Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV


Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 07/22/22 09:30am Link  |  Quote  |  Print  |  Notify Moderator

Full floater outer axle bearings are oiled by the diff, not grease lubed.
9450 is about right, but axles get “derated” depending on the vehicle they’re attached to.
And how hot is awfully hot? If you can hold your finger on them, nothing is burning up.
And presuming you have full diff oil and within service limits.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29

enblethen

Moses Lake, WA

Senior Member

Joined: 01/05/2005

View Profile






Posted: 07/22/22 09:48am Link  |  Quote  |  Print  |  Notify Moderator

I would suggest changing the fluid. It is easy to do. Biggest issue is to insure you drain fluid fully. Will need to jack up each side one at a time to get old fluid out of hubs. You must do the reverse when filling to get new fluid into each hub area. Final fill level would be done after accomplishing alternating.
Inspect old fluid for metal debris.
OP: do you have rear drums or disc brakes? My discs run hotter than drums!


Bud
USAF Retired
Pace Arrow

2003 Chev Ice Road Tracker


Lwiddis

Southern California :(

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 07/22/22 12:17pm Link  |  Quote  |  Print  |  Notify Moderator

Cruising for an hour at 50 MPH in the Summer will heat everything up to operating temperature. Thirty minutes will too! If anything is above operating temperature, have it checked.


Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


bighatnohorse

Gig Harbor - Cave Creek

Senior Member

Joined: 01/15/2005

View Profile



Good Sam RV Club Member


Posted: 07/23/22 08:29am Link  |  Quote  |  Print  |  Notify Moderator

Yes. The Dana 80 is de-rated by Ford to match the tire load capacity.
The Dana 80 is rated for 11,000 pounds by it's manufacturer.


2021 Arctic Fox 1150
'15 F350 6.7 diesel dually long bed
Eagle Cap Owners
“The best lack all conviction, while the worst
Are full of passionate intensity."
-Yeats

Huntindog

Phoenix AZ

Senior Member

Joined: 04/08/2002

View Profile



Posted: 07/23/22 09:16am Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

I assume we are talking about the hubs (out by the wheels), not the differential (aka: pumpkin) in the middle.

Unless you are heavily loaded or have other reason to believe you are putting more strain than normal on the bearings, I would pull them apart to make sure they still have grease in them and there is no other apparent damage.
You have obviously never greased your rear ends bearings. I am trying real hard not to laugh at that statement.
Oh to heck with it.[emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon][emoticon]

Another internet expert exposed.



Huntindog
100% boondocking
2021 Grand Design Momentum 398M
2 bathrooms, no waiting
104 gal grey, 104 black,158 fresh
FullBodyPaint, 3,8Kaxles, DiscBrakes
17.5LRH commercial tires
1860watts solar,800 AH Battleborn batterys
2020 Silverado HighCountryC CD/A 4X4 DRW



Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next

Open Roads Forum  >  Tech Issues

 > Let's talk Dana 80 axle temps
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.