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  #1  
Old 03-27-2011, 02:32 PM
kjular kjular is offline
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Rear drum brakes (how to adjust them)

Hi,
I have a Durango 99 5.2l with the NV231 transfer case.
When I was parking my truck it came smoke from my left rear brake (drum) so for some reason the brakes were on while driving. When I got home I pulled the wheel of and adjusted the brakes so I could take the drum of, while inspecting the brakes everything looked fine so I put them back together again. Now to my question when I have one wheel of the ground I can’t spin the wheel the transmission blocks it, so I raised the other rear wheel but it’s the same I can’t spin the wheels and the NV231 is in neutral?

Or best of all can someone describe how to adjust the rear drum brakes and how the gears should be positioned when you adjust brakes?

Thanks
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  #2  
Old 03-27-2011, 02:41 PM
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Shimrra Shimrra is offline
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pull your drums off and inspect them.
if there is a lip, you might want to consider having the drum re-surfaced or replaced
if the shoes are shot, do a full brake job.
bring the drums to any shop, they can mic them. they might have worn past recommended min.
make sure the small shoe is on the front on both sides
make sure the adjusters are not backwards!
grease everything good.

now to adjust it, all you need to do is turn the adjuster (star thing at the bottom) untill the drum won't slip on anymore. then back it off untill you can just get the drum on.
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  #3  
Old 03-28-2011, 07:58 PM
kjular kjular is offline
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Thanks Shimrra for your fast reply!

I have now adjusted them according to your instruction and they seem to work well!

But is it normal for the drums to get hot (can hardly put my fingers on them) when I don’t have driven in high speed and hardly even used the breaks? Just driven a few blocks and of course stopped a few times.

Before this incident with the smoke I have not checked the heat on the drums, and I realize that after a highway stop they get really hot
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Old 03-28-2011, 10:31 PM
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Shimrra Shimrra is offline
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drums are not really known for getting hot. how were the springs looking when you took the drum off? the pads might be sticking.

also check your parking break and make sure that's not on at all
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  #5  
Old 03-30-2011, 07:08 PM
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Thanks again Shimrra!

I have been working late this week and have not tried the brakes yet (and it’s cold in Sweden at nights) but after work tomorrow I give a new try. Everything looked good to me (even the springs) but I try as you said with grease on the moving parts and adjust them again.
I’m should get the car inspected on Monday (we have to get our cars inspected every year in Sweden)
And need the brakes to work by then……
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Old 04-08-2011, 06:28 PM
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This is driving me nuts……

To get this to work I have bought new shoes ,mounting parts (springs and so on) and wheel cylinders and adjusted dem according to shimrra´s instruction but still get some heat on them……….and the parking break is not on att all………..
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Old 04-08-2011, 06:53 PM
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take a pic. make sure you mark what side is what somehow. the adjusters might be backwards. if they are, every time you hit the breaks going forward they will make it tighter and tighter.
how hot are you talking? can you touch them? you should be able to get your hand on them, but they will be warm.

How do the drums look? are they glazed?
when you take the drums off to inspect, do they just slide off? or do you need to work them a bit?
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Old 04-10-2011, 01:17 PM
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Thanks Shimrra!

Here is a pic of the left brake (drivers side)!

My drums get so hot i cant touch them on bouth sides so maybe its the parking brake after all.

and when i take the drums of its a little work side to side to get them of.
Attached Images
File Type: jpg PICT0047.jpg (498.4 KB, 85 views)
File Type: jpg PICT0046.jpg (519.4 KB, 85 views)
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Old 04-10-2011, 09:48 PM
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first off, i'm pretty sure your shoes are backwards. small ones should be in front.
now, to test if it is a parking break issue, pull that steel bar out (you have a green spring on it). leave it out and take it for a drive. without that, you have NO parking breaks. if this fixes it, you have cables binding up somehow.

now, as long as i'm looking at this right, (as if the tire spins COUNTER clockwise) then it is set up right.
it's hard to tell in the second pic, but from what i see in the first, the pad on the right of the pic is smaller? this goes in front as it does less work. the pad towards the rear of the truck does more of the breaking
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  #10  
Old 04-11-2011, 07:32 AM
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I just finished going thro the same problem on my D ('99 Durango), turns out I had a siezed park brake cable on the driver rear... replaced all the brake components in the rear, just cause I was there :P
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Old 04-11-2011, 08:50 PM
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Thanks again for your help on this……
To be sure I pulled the wheels and drums of again (I should look like the incredible hulk now) and the small shoe is in front of each side
I have tried to take “that steel bar out (I have a green spring on it)” but the drums heat up after a few breaks.

Now it seems to me like the new wheel cylinders do not “reset” after I have applied the brakes! I can feel after little harder brake the rear brakes are on. And every time I adjusted the brakes the drums are cold until I done a harder break the heat up.
Could it be air in the cylinders or houses?
When I bleed my brakes I did first Rear right, rear left, front right and front left.
Should this be done with the engine on or off?

Could you please talk me true this procedure?
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Old 04-11-2011, 11:28 PM
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tommorow i'll pull one of my drums off and take a pic just for comparison
as for air in the system, it wouldn't cause drag like that
pull the adjuster out, pull the whole thing apart and take a look. the end cap comes off and you can thread the whole thing out. make sure it's nice and not binding. when i pull mine apart, i'll adjust them and make a little vid.
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  #13  
Old 04-14-2011, 08:32 PM
kjular kjular is offline
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Thanks all for your help on this!

Finally I figured out what’s going on…..it’s not the parking break, it’s something with the wheel cylinders
(All new on both sides) the does not “reset” (come to resting position) after I applied the break on either side. I noticed this when I pulling my drums off for the 20 time  to get the drums of I had to bleed the wheel cylinders. So the fluid does not go back in the pipes!
Over the center of the rear axle there is a “connection thing” where the hoses adapts to pipes could this thing be the problem? and stopping the fluid from getting out of the wheel cylinders
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Old 04-14-2011, 09:46 PM
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Does the red spring have any tension on it?

It does not look like it does from the pics, and that spring helps to compress the wheel cylinder, and draws the shoes back in after releasing the brake pedal.
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Old 04-14-2011, 10:24 PM
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hose might have an internal tear acting like a check valve
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