Rear brake rotors - Dodge Cummins Diesel Forum
3rd Gen. Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 10Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 25 (permalink) Old 08-13-2019, 02:40 PM Thread Starter
Newbie
 
Join Date: Jan 2010
Location: Alaska
Posts: 5
Thanks: 0
Thanked 1 Time in 1 Post
iTrader Score: 0 reviews
Rear brake rotors

I've got a 2005 2500 and when I rebuilt the a caliper I noticed noticed the inside pad was almost gone. I've done front brakes on several vehicles, but this is the first time I've done the rear. My truck has rotors that are finned on the backside - not ventilated, but the inside brake pad contacts the fins. In looking for replacement rotors the dealer couldn't tell me if the replacements are finned or not (he didn't have any in stock and the pic didn't show fins). A couple questions: Can I replace these with conventional rotors with no issues? Why would you want these "fins" as they have much less braking area? When setting the emergency brake does it just actuate the inner pads?
Thanks, I appreciate the input.

jogn2 is offline  
Sponsored Links
Advertisement
 
post #2 of 25 (permalink) Old 08-13-2019, 02:50 PM
Diesel Head
 
cerberusiam's Avatar
 
Join Date: Mar 2006
Location: Minco OK
Posts: 14,835
Thanks: 9
Thanked 2,684 Times in 2,250 Posts
iTrader Score: 0 reviews
You mean they are slotted rotors? Finned is entirely different.

You want the slotted rotors, helps keep the brake dust cleaned out an water routed off the surface. They even make drilled and slotted rotors for perforamnce but for the most part the slotted s work the best.

E brake just sets the shoe son the inside of the hub. You don't have to even pull the hub to change the rotors.

05 QC LWB 4x4 Auto 3.73 LSD, IssproEV2's, Performance 48RE Opie TransGo , Smarty Tuned BBI Injected
cerberusiam is online now  
post #3 of 25 (permalink) Old 08-13-2019, 03:01 PM Thread Starter
Newbie
 
Join Date: Jan 2010
Location: Alaska
Posts: 5
Thanks: 0
Thanked 1 Time in 1 Post
iTrader Score: 0 reviews
No, on the back side of the rotor in lieu of a flat braking surface there are a bunch of "raised" fins that the pad contacts. I'm not the original owner so not sure these are the original ones.
jogn2 is offline  
Sponsored Links
Advertisement
 
post #4 of 25 (permalink) Old 08-13-2019, 03:08 PM
Diesel Head
 
Join Date: Sep 2011
Location: Parkton, MD.
Posts: 3,273
Thanks: 1,266
Thanked 266 Times in 227 Posts
iTrader Score: 0 reviews
Its a "hat " style rear rotor . very easy to replace assuming the inside emerg brake shoes have not formed a large rust ring . that makes it tuff.

Just go standard high quality rotor .

VERY important at that time to check the caliper slider pins , free them up and add special grease if ness. This will even up the pad wear / or help a great deal.

SOLD My 2001 and 2005 .
SOLD 2004.5 Sons mod truck
2006 Sons Truck and 1994 12 valve soot machine
24hrsparkey is offline  
post #5 of 25 (permalink) Old 08-13-2019, 03:28 PM Thread Starter
Newbie
 
Join Date: Jan 2010
Location: Alaska
Posts: 5
Thanks: 0
Thanked 1 Time in 1 Post
iTrader Score: 0 reviews
Sparky, thanks for the info - yes I will check the slider pins. Just curious what is the purpose/advantage of the "hat" design? I'll just go with a good, quality standard design.
jogn2 is offline  
post #6 of 25 (permalink) Old 08-13-2019, 04:25 PM
Diesel Head
 
Join Date: Apr 2013
Location: Exeter RI
Posts: 3,001
Thanks: 327
Thanked 490 Times in 403 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by jogn2 View Post
No, on the back side of the rotor in lieu of a flat braking surface there are a bunch of "raised" fins that the pad contacts. I'm not the original owner so not sure these are the original ones.
Sounds like you wore through the rotor and all thats left are the fins that used to join the two rotor faces. Thats why the inner pad is worn out.
Jhenderson is online now  
The Following User Says Thank You to Jhenderson For This Useful Post:
vreihen (08-13-2019)
post #7 of 25 (permalink) Old 08-13-2019, 04:39 PM
Diesel Head
 
utahtrapper's Avatar
 
Join Date: Jul 2014
Location: Sandy Utah
Posts: 1,059
Thanks: 20
Thanked 101 Times in 89 Posts
iTrader Score: 0 reviews
Pics would be Great to see what we are talking about here?
Mr Jhenderson is very likely correct.

2006 Blue Laramie DRW. 3500 5.9 G56 Mobil Delvac 50, Tans Cool PTO Covers, GDP Fuel Boss, GDP Double-X Ladder Bars, GPD big line kit, GDP MK-2 Fuel filter kit with CAT UHE 416 1225, GDP Power-Flo Intake Manifold, Throttle Up Industries Dual Fuel Filters, Dieselsite Coolant Filter, Cool Hose, Timbrens, 26k with Horses in Trailer, ................... BBi's .5 Towing Injectors WOW!
Carli Ball Joints
utahtrapper is offline  
post #8 of 25 (permalink) Old 08-13-2019, 04:59 PM
Diesel Head
 
PWong's Avatar
 
Join Date: Sep 2011
Posts: 5,300
Thanks: 11
Thanked 513 Times in 489 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Jhenderson View Post
Sounds like you wore through the rotor and all that’s left are the fins that used to join the two rotor faces. That’s why the inner pad is worn out.
I did see a member here posted a picture like that sometimes ago.
One side of the rotor was totally gone.

_________________
'05 2500 QC SLT SB 4X4 48RE Smarty Jr 205k miles
Baldwin FB1311 + Donaldson P551313 (3 Micron) + Baldwin PF7977
PWong is offline  
The Following User Says Thank You to PWong For This Useful Post:
vreihen (08-13-2019)
post #9 of 25 (permalink) Old 08-13-2019, 07:52 PM
Diesel Head
 
cerberusiam's Avatar
 
Join Date: Mar 2006
Location: Minco OK
Posts: 14,835
Thanks: 9
Thanked 2,684 Times in 2,250 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by jogn2 View Post
No, on the back side of the rotor in lieu of a flat braking surface there are a bunch of "raised" fins that the pad contacts. I'm not the original owner so not sure these are the original ones.
Umm, no. If you do not have a flat surface with like 5-6 grooves cut in it the rotor is trashed. You need rotors and pads and might as well replace the calipers as thye are trashed form the heat and age.
utahtrapper and MDSWA like this.

05 QC LWB 4x4 Auto 3.73 LSD, IssproEV2's, Performance 48RE Opie TransGo , Smarty Tuned BBI Injected
cerberusiam is online now  
post #10 of 25 (permalink) Old 08-14-2019, 12:03 AM
Diesel Head
 
utahtrapper's Avatar
 
Join Date: Jul 2014
Location: Sandy Utah
Posts: 1,059
Thanks: 20
Thanked 101 Times in 89 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by cerberusiam View Post
Umm, no. If you do not have a flat surface with like 5-6 grooves cut in it the rotor is trashed. You need rotors and pads and might as well replace the calipers as thye are trashed form the heat and age.
Another TRUE response.

Another thought is to Flush the entire Brake Fluid system starting from the right rear caliper ie passenger rear to driver side rear then passenger front to driver front caliper.

I am still waiting for Pictures!
tryNto likes this.

2006 Blue Laramie DRW. 3500 5.9 G56 Mobil Delvac 50, Tans Cool PTO Covers, GDP Fuel Boss, GDP Double-X Ladder Bars, GPD big line kit, GDP MK-2 Fuel filter kit with CAT UHE 416 1225, GDP Power-Flo Intake Manifold, Throttle Up Industries Dual Fuel Filters, Dieselsite Coolant Filter, Cool Hose, Timbrens, 26k with Horses in Trailer, ................... BBi's .5 Towing Injectors WOW!
Carli Ball Joints

Last edited by utahtrapper; 08-14-2019 at 12:10 AM.
utahtrapper is offline  
post #11 of 25 (permalink) Old 08-14-2019, 12:49 AM
Diesel Freak
 
steelhead1's Avatar
 
Join Date: Jun 2016
Posts: 994
Thanks: 40
Thanked 141 Times in 128 Posts
iTrader Score: 0 reviews
Rotor fins?

This?



Or this?
https://youtu.be/qHMhsD8OFCs

Those who ride their brake pedal pay double repair costs
steelhead1 is offline  
The Following User Says Thank You to steelhead1 For This Useful Post:
vreihen (08-14-2019)
post #12 of 25 (permalink) Old 08-14-2019, 01:35 AM Thread Starter
Newbie
 
Join Date: Jan 2010
Location: Alaska
Posts: 5
Thanks: 0
Thanked 1 Time in 1 Post
iTrader Score: 0 reviews
Wow! I would have never imagined that could happen. I just started having issues 2 weeks ago. I know my hearing isn't great, but ....
New rotors and pads will be ordered to night.
Thanks for the help gents.
Attached Thumbnails
Click image for larger version

Name:	Rotor1.jpg
Views:	28
Size:	134.7 KB
ID:	854077   Click image for larger version

Name:	Rotor2.jpg
Views:	27
Size:	133.9 KB
ID:	854079  
jogn2 is offline  
The Following User Says Thank You to jogn2 For This Useful Post:
vreihen (08-14-2019)
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

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










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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
Trackbacks are On
Pingbacks are On
Refbacks are On

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