Results 1 to 8 of 8

Thread: Rear brake drums, should I turn em

  1. #1
    Join Date
    Jan 2004
    Location
    Washington State
    Posts
    1,652

    Default Rear brake drums, should I turn em

    Pulled off my rear brakes to install new backing plates with the Ford wheel cylinders, loaded with new brake shoes. Thanks Dan, I'll be installing new bearing seal, packing and checking the bearings. Will replace bearings if need be. Should I turn the drums? They are not blued and appear to have never been overheated. The current shoes are about 80 to 90 % and the current stock wheel cylinders look moist, not leaking. I am going to clean up the drums and paint, should I turn them before installing or not worry about. Let me know your ideas. Thanks Fisherman

  2. #2
    Join Date
    Dec 2006
    Location
    KINGSPORT, TN.
    Posts
    229

    Default

    i hope you marked the drums so they go back on exactly where they came off. and for turnning them, if there not groved from the rivets clean em and put em back on.

  3. #3
    Join Date
    Jan 2004
    Location
    Northern Colorado
    Posts
    324

    Default

    If the drums are smooth and not scored, I would NOT have them turned. You want them to last as long as possible!

    Hit em with some brake cleaner, dry, and install.

  4. #4
    Join Date
    Jan 2004
    Location
    Washington State
    Posts
    1,652

    Default

    I will put them back on the side they came from, someone else could have mixed them up easy though, it was a fire truck. Why do they need to go back exaclty where I took them off from???

  5. #5
    Join Date
    Dec 2006
    Location
    Covington, (the other) LA
    Posts
    60

    Default

    Cause the drums are machined for the hubs on which they are mounted.

    The tolerances are not close enough to make them truly "interchangeable parts". (Eli Whitney is whirling dervishly in his grave)

    If you install them on the wrong hub, or even rotate them one position on the "right" hub, they can cause excessive drum run-out, poor brake performance or brake shoe life, noise, vibration, etc. You get the idea.

    So - mark them before removal. If it's too late for that, try to keep them on the hub they started on. Try all three positions for the best fit. If you don't know which is which, bummer.

  6. #6
    Join Date
    Dec 2006
    Location
    KINGSPORT, TN.
    Posts
    229

    Default

    better listen to twodogs todd.
    bob

  7. #7
    Join Date
    Dec 2003
    Location
    Giddings, Texas
    Posts
    7,729

    Default

    Todd,
    You are months away from driving your truck. Don't worry about the drum fitment issue right now. Yes, keep them on the same corner they came off of. Yes, if they can be bolted back onto the hub in the exact same way it is better. You don't know which way they were bolted on before and they were probably not put on right before. So, you can put them on and not think about them again until you start driving it. If you get the head bobing surge, then one corner at a time start trying the 2 other positions the drum could be bolted on and see which is best.

    Or, since you have the truck all apart right now. Remove the backing plates or at least the wheel cylinders. What ever you have to do to get a dial indicator inside the drum. Bolt the drum on and spin it. Record how much runout you get. Do this for the other 2 positions the drum can be mounted. If yours is like mine, 1 position will be drastically less runout than the other two. I used number/letter punches to mark the placement on my hub/drum sets. Weird color spray paint is a lot easier method and easier to see. Just mark it and do the 3 other corners.

    That make sense?
    Remember if you didn't build it you can't call it yours.

    6.2 powered M715, 5 M1009's, M416, 2 M101's, 2 M105's, 3 M35's, M1007 6.5 turbo Suburban project called Cowdog.

    https://www.youtube.com/channel/UCCz...HGkBCfhXZ5iuaw

  8. #8
    Join Date
    Jan 2004
    Location
    Washington State
    Posts
    1,652

    Default

    Thanks Tim, Great idea. Yes backing plates are off. I'll borrow a dial indicator, give it a go. I set them up with the least runout. Finish them up and won't worry until the week or so I start driving it. Yeh, it will be awhile yet. Thanks

Similar Threads

  1. kamokaiser : turning brake drums
    By PseudoZone in forum PseudoZone - Mod Tech Archive
    Replies: 2
    Last Post: December 15th, 2009, 07:55 PM
  2. Front and rear turn signals
    By Jester in forum Open Discussion
    Replies: 5
    Last Post: November 18th, 2008, 11:07 PM
  3. Brake lights and turn signals
    By vacca rabite in forum Modified Tech
    Replies: 11
    Last Post: May 31st, 2008, 02:44 AM
  4. rear brake lock up
    By stranman in forum Stock Tech
    Replies: 17
    Last Post: April 14th, 2008, 07:16 AM
  5. Stock specs for stock axle, wheel, brake drums & tires
    By brute4c in forum Stock Tech Archives
    Replies: 0
    Last Post: May 31st, 2007, 09:46 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


Site Upgrade, Design Modifications & Administrative Support by:
Palm River Enterprises LLC, IT Solutions
President: Tom King, User ID=teking
This site is owned and operated by:
M715 Zone, LLC
President: Jon Schmidt, User ID=brute4c


If you have any suggestions, comments, problems or questions, contact:  brute4c@m715zone.com
Use of this site means you understand and agree to our TERMS OF USE

Copyright Notice:
This web site is subject to the protection of the copyright laws of the United States and other countries. Except for Personal Use Only, you may not modify, copy, distribute, transmit, display, perform, reproduce, publish, license, create derivative works from, transfer, or sell any information obtained from any part of the M715 Zone website without the prior written permission of M715 Zone, LLC. Written permission can only be obtained by contacting brute4c@m715zone.com

Copyright 1998-2024