New Brake DRUM & Shoes Grinding!! - JeepForum.com
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post #1 of 17 Old 06-23-2021, 05:46 PM Thread Starter
roanokewalker
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New Brake DRUM & Shoes Grinding!!

Hi. I have a 1977 CJ7 (it was a golden eagle) now has an Inline258 inline6
I Have DRUM BRAKES in the front.!!!! and in the rear.

So I have had an intermittent grinding coming from my drivers side brake drum area. I figured my old Drum was a bit warped.
I replaced the brake shoes, and some of the springs along with the shoes a few weeks ago. (It did not solve the problem)

So Today I bought a NEW Brake Drum. I adjusted the "ADJUSTMENT spinning tool" All The Way IN. this means the shoes are sitting close / or more closed / or closer together. ((versus when you adjust the tool all the way OUT, and it makes the brake shoes sit Wide / and more Opened.))

So... I install the New Drum.! The new Drum slides on, over the lugs easily. yet my brake shoes are still hitting and grinding the New Drum NONSTOP.!!! It's LOUD and sounds TERRIBLE. After 200 yards, I parked it back in my driveway. Heck the front wheel doesn't even want to spin freely.

What do I DO.??? ((I can't close the adjustment tool any smaller.! - so THAT isn't an option))

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post #2 of 17 Old 06-23-2021, 11:09 PM
BagusJeep
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Which drums did you buy?

BagusJeep lives in Bali with far too many 4x4s:
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
1980 Land Rover Series III 109" troop carrier - ROVER
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post #3 of 17 Old 06-24-2021, 06:45 AM
baldfatdad
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check the wheel cylinder it could be stuck
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post #4 of 17 Old 06-24-2021, 10:42 AM Thread Starter
roanokewalker
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Just the typical Advance Auto Parts - DRUM purchase.
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post #5 of 17 Old 06-24-2021, 10:49 AM Thread Starter
roanokewalker
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My cylinder is New also... (When The Drum Is Removed, for 'inspection stuff' by curious me) The cylinder Does INDEED push open the brake shoes... kinda FAR.! Open! to the point that the front shoe doesn't want to re-set properly & snugly back into place correctly.... But somebody told me "don't worry about That, because when the Drum is ON and in place - the cylinder won't be able to push Wide Open the brake shoes as far,...so it shouldn't wouldn't get hung up trying to reset into place. It is as if the bottom portion of the 1/2 moon crescent is hitting the Center pin and not resetting snuggly around it. My Springs are NEW too.... Thoughts? Did I just get bum shoes.?
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post #6 of 17 Old 06-24-2021, 11:35 AM
gutthans
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Grinding...isn't what shoes do when tight against the drum (unless they are worn down to the rivets). So, could you post up a pic or an audio file?

Grinding to me implies metal-to-metal contact, not shoes sliding over the drum.
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post #7 of 17 Old 06-24-2021, 12:55 PM Thread Starter
roanokewalker
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this website is NOT user friendly enough, to post a short video clip recorded on a Samsung galaxy phone to allow us to share video. ((when I try to drag the thumbnail of the video clip from my desktop, into the Drag and Drop File Upload area.....nothing happens.
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post #8 of 17 Old 06-24-2021, 01:42 PM
RiverandSand
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Sounds like you may have a wrong drum, CJs had 11" and 10" drums. All drum brake CJs were 11" in those years I believe. The front disc brake CJs went to rear 10" drums, for some reason, so I would check your size.
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post #9 of 17 Old 06-25-2021, 09:35 PM
JEEPFELLER
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I have a '77 CJ-5

Drums all the way around---all is perfect

Not sure of your adjustments

Lets go with a short shoe limning installed on the front of each wheel

And a long lining on the rear of each wheel

(not 2 shorts on one side and 2 long on the other)

Adjust your star wheel outward until the drum barely goes on

(slides on almost snuggly----not beat it on!)

This will allow one pedal push to grab onto the drum----not multiple pushes to make the shoes start grabbing

If this does not help---send a pic of all of your brakes with the drum off so we can see if it's all assembled right.

Pics must show both lining's and the springs and such.

Compare your old and new drum diameters

----JEEPFELLER
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post #10 of 17 Old 06-26-2021, 09:36 AM
mudbfun
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Quote:
Originally Posted by gutthans View Post
G
Grinding to me implies metal-to-metal contact, not shoes sliding over the drum.

Exactly. OP needs to tear down and inspect for shiny spots, see where the metal to metal contact is occurring and go from there. Could possibly be wrong size drums or simply not put back together right.



Take a drum off and inspect for unwanted contact.
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post #11 of 17 Old 06-27-2021, 09:02 AM
bob4703
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Take the drum off the opposite side and see if it still happens.

-----

Paved roads are prime examples of government over spending!
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post #12 of 17 Old 06-27-2021, 03:46 PM
gutthans
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Quote:
Originally Posted by davcono View Post
Replaced starter and cooling fan fuses with breakers. Installed an indicator light to show power to cooling fan when running. Breakers and indicator light on Amazon. Stainless pre-drilled bracket from Zoro. FYI - battery cover is homemade with polished SS from an online metals store.
Wrong thread sir.
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post #13 of 17 Old 06-27-2021, 04:12 PM
JEEPFELLER
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Back to the drum brake dilemma

You didn't by chance throw all of your brake parts in a pile (maybe for washing or such)?

The adjusters are marked with an "L" (Maybe an "R' also) denoting which side they go on.

Any pics of your system without the drums installed yet?

----JEEPFELLER
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post #14 of 17 Old 06-27-2021, 08:16 PM
jammer1
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Did you save the old drums and shoes. I've heard of guys putting new shoes on and the new shoes were wider and would grind on the inside of the drum (side where lugs go through, not where the shoes press). Shoe's could be too wide. Pull the drum and look at the inside where the side of the shoe could hit. If scored you found the problem.
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post #15 of 17 Old 06-30-2021, 08:13 PM
buster51
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I went through 3 NAPA best quality drums on 97 Cherokee before I found one that was true. Put it on backwards and spin it. I was shocked at how warped two of them were. NAPA must have been aware because they didn't argue.
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