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Unread 11-18-2009, 10:23 AM   #1
stansama
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1980 CJ7 
 
Join Date: Sep 2009
Location: maine
Posts: 12
Rear Drum Brakes

Hey everyone, having trouble removing my rear drums to put in new parking brake lines and shoes, 1980 CJ7. Tried pounding with a hammer, prying with a bar, but they simply won't come off. Seems like something is holding them in the center, and they snap back into place after some prying. What approach should I try to remove these? Thanks in advance!

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Unread 11-18-2009, 10:31 AM   #2
daltonw
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1981 CJ7 
 
Join Date: Sep 2009
Location: KS
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mine tapped off with a hammer. It did help to remove the plastic covers that cover the axle nut
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Unread 11-18-2009, 10:31 AM   #3
garbageman
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1976 CJ7 
 
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Use a screwdriver and release the tension on the shoes. There is a slack adjuster spreading them out that can be accessed by the rear backing plate.
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Unread 11-18-2009, 10:39 AM   #4
Mike Romain
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1986 CJ7 
 
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You have to go in from the back bottom and loosen off the star wheel inside to release the brake shoes. They are now stuck under the lip they wore into the drum. Sometimes you need one small screwdriver to push the locking tab at the top of the star wheel inward and out of the way to move the star wheel.

Make sure you manually adjust the star wheel back up for the new shoes before adjusting the emergency brake cable's tension or the cable can become the pivot point for the shoes which will break things eventually.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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Unread 11-18-2009, 03:31 PM   #5
stansama
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Is the star wheel accessed via the two black rubber/plastic oval-shaped grommets? Sorry, never dealt with drum brakes before. Dalton, not sure what you mean. Seems like the front of the drum is one solid piece that covers the drum and axle, don't see any plastic covers.
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Unread 11-18-2009, 03:37 PM   #6
ahuppertz
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1993 ZJ 
 
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That's precisely it. Pull those out, push just under the adjuster and to the rear of the vehicle side of the star wheel, then use another screwdriver to push the star wheels up on both sides. It's much easier to just pound them off though.
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Unread 11-18-2009, 03:47 PM   #7
stansama
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Ok, thanks for the clarification. I won't be able to get to this until after the weekend now, and since I haven't had the drums apart I don't know what the hardware and drums look like inside, so I'm wondering if I should order new hardware while I'm going to be in there? Judging by the front brakes when I replaced them the previous owner did no prior brake work. I'm a bit afraid to see what's inside the drums!
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Unread 11-18-2009, 03:53 PM   #8
ahuppertz
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1993 ZJ 
 
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Get the drum brake repair kit if they have one. I've got a 93 gc with drums so i'm workin of thr knowledge of that, but definately I would buy those if they have them for your model.
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Unread 11-18-2009, 03:59 PM   #9
ahuppertz
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(sorry for double post)
you should be looking at this when you remove the drum.

looks exactly like mine, and the most common things to fail are the adjuster ratchet cable (you can only see a piece of it in the upper left side around the static pulley behind the spring)

here's a picture of my year with the hub removed (it looks just like your year to me. the access port with the grommet in it is right behind the star wheel, but this will kind of give you an idea as to what i'm talking about.
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Unread 11-18-2009, 04:00 PM   #10
Mike Romain
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1986 CJ7 
 
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The hardware and adjuster kits (2 different kits) are worth buying and are inexpensive. Then it is all new inside.

Here are some photos and a writeup:

Jeepin.com: Installing new drum shoes
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Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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Unread 11-18-2009, 04:02 PM   #11
ahuppertz
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i hate drum brakes so much. i can't wait till i can afford the v8 posi rear end with discs.
hope that helped!
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Unread 11-18-2009, 04:06 PM   #12
stansama
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Great pictures and link, thank you! What is the difference in the two kits? I saw them both online. I'm assuming that my jeep is non-self adjusting. Does one kit replace the other, or do they work together?
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Unread 11-18-2009, 04:07 PM   #13
bigjoe
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1977 CJ7 
 
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The guys have covered it pretty well. Only thing to add that may help you if you have not rebuilt drum brakes is do one side at a time. Don't pull them both apart and start to rebuild. By doing one side at a time it will give a reference to look at if you get into trouble. Just an idea for ya. The hardware kit will be all the mounting springs for the shoes. The adj. kit is for the start wheel as I recall. That keeps adjusting the shoes to the drum as theshoes wear down. Get both kits. They don't cost much and the brakes will work better. Good Luck.
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Unread 11-18-2009, 04:10 PM   #14
Mike Romain
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Quote:
Originally Posted by ahuppertz View Post
i hate drum brakes so much. i can't wait till i can afford the v8 posi rear end with discs.
hope that helped!
The drums do have a use. If you have an open diff and get stuck on ice with one front and one rear tire spinning, you can use the emergency brake slowly (even the CJ7 owners manual mentions it) or give the brake pedal a hard fast shot to load up the spinning wheel until it reaches enough torque to break the other wheel free. It works well with some practice.

Sometimes, all 4 will spin out, but the disk brakes don't load up as nice or smooth as shoes do.
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Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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Unread 11-18-2009, 04:11 PM   #15
stansama
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Thanks Joe, certainly a good idea!
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